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	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Permaculture&amp;diff=124339</id>
		<title>Permaculture</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Permaculture&amp;diff=124339"/>
		<updated>2014-12-11T00:49:18Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Online Resources */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;See [[Factor e Farm Site Plan]]&lt;br /&gt;
&lt;br /&gt;
The term related to either &amp;quot;Permanent Agriculture&amp;quot; or &amp;quot;Permanent Culture&amp;quot;. Permaculture is a [http://en.wikipedia.org/wiki/System_thinking systems thinking] design model focusing on sustainable and regenerative systems. It considers ecological theory informed by the lifestyles of indigenous cultures as well as modern technological advancements. Permaculture ranges a diverse field of design methods, anything from perennial-based agricultural systems, to the homestead, to individual or community structures.&lt;br /&gt;
&lt;br /&gt;
The majority of permaculture design is considered within the framework of &#039;[http://en.wikipedia.org/wiki/Zones_(Permaculture) zones]&#039;. David Holmgren [http://en.wikipedia.org/wiki/David_Holmgren] has also theorized a series of &#039;meta-zones&#039; in which he describes spheres of influence. In this meta-zone system, Zone 0 represents a person&#039;s core, their self, whereby energy inputted for change has a high likelihood of impact or result. This series of meta-zones ends at the global level; at the global level one is less likely to experience any form of direct impact.&lt;br /&gt;
&lt;br /&gt;
Permaculture is considered a unique design system because of its [http://en.wikipedia.org/wiki/Permaculture#Core_values core values] and [http://www.permacultureprinciples.com/principles.php principles]. While it was once considered a fringe movement of alternative culture, permaculture is now seen as an intelligent, informed, and truly important body of study:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;blockquote&amp;gt;&#039;&#039;&amp;quot;What permaculturists are doing is the most important activity that any group is doing on the planet. We don&#039;t know what details of a truly sustainable future are going to be like, but we need options, we need people experimenting in all kinds of ways and permaculturists are one of the critical gangs that are doing that.&amp;quot;&#039;&#039; &amp;lt;/blockquote&amp;gt;&amp;lt;div style=&amp;quot;text-align: right; direction: ltr; margin-left: 1em;&amp;quot;&amp;gt;- Dr David Suzuki geneticist, broadcaster, and international environmental advocate&amp;lt;/div&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;[http://en.wikipedia.org/wiki/Permaculture#References Wikipedia: permaculture References et al]&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
There is a growing movement dealing with [[Open Source Permaculture]], in which all the agricultural information and genetic resources are shared.&lt;br /&gt;
&lt;br /&gt;
==Zoning==&lt;br /&gt;
&#039;&#039;&#039;Permaculture Zones&#039;&#039;&#039;&lt;br /&gt;
([http://en.wikipedia.org/wiki/Permaculture from Wikipedia])&lt;br /&gt;
are a way of organizing design elements in a human environment on the basis of the frequency of human use and plant or animal needs. Frequently manipulated or harvested elements of the design are located close to the house in zones 1 and 2. Less frequently used or manipulated elements, and elements that benefit from isolation (such as wild species) are farther away. Zones is about positioning things appropriately. Zones are numbered from 0 to 5:[citation needed]&lt;br /&gt;
*Zone 0&lt;br /&gt;
**The house, or home center. Here permaculture principles would be applied in terms of aiming to reduce energy and water needs, harnessing natural resources such as sunlight, and generally creating a harmonious, sustainable environment in which to live and work. Zone 0 is an informal designation, which is not specifically defined in Mollison&#039;s book.&lt;br /&gt;
*Zone 1&lt;br /&gt;
**The zone nearest to the house, the location for those elements in the system that require frequent attention, or that need to be visited often, such as salad crops, herb plants, soft fruit like strawberries or raspberries, greenhouse and cold frames, propagation area, worm compost bin for kitchen waste, etc. Raised beds are often used in zone 1 in urban areas.&lt;br /&gt;
*Zone 2&lt;br /&gt;
**This area is used for siting perennial plants that require less frequent maintenance, such as occasional weed control or pruning, including currant bushes and orchards. This would also be a good place for beehives, larger scale composting bins, and so on.&lt;br /&gt;
*Zone 3&lt;br /&gt;
**The area where maincrops are grown, both for domestic use and for trade purposes. After establishment, care and maintenance required are fairly minimal (provided mulches and similar things are used), such as watering or weed control maybe once a week.&lt;br /&gt;
*Zone 4&lt;br /&gt;
**A semi-wild area. This zone is mainly used for forage and collecting wild food as well as timber production.&lt;br /&gt;
*Zone 5&lt;br /&gt;
**A wild area. There is no human intervention in zone 5 apart from the observation of natural ecosystems and cycles.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
&lt;br /&gt;
* [[Open Source Permaculture]]&lt;br /&gt;
* [[Permaculture Wiki]]&lt;br /&gt;
* [[Ekopedia: Permaculture]]&lt;br /&gt;
* [[Appropedia: Permaculture]]&lt;br /&gt;
&lt;br /&gt;
==Online Resources==&lt;br /&gt;
*[http://thepiratebay.org/torrent/5040528/PERMACULTURE__A_Designers_Manual__Bill_Mollison &#039;&#039;Permaculture: A Designer&#039;s Manual&#039;&#039;] by Bill Mollison. The book that started it all, available on The Pirate Bay.&lt;br /&gt;
*[http://www.networkearth.org/perma/culture.html Bill Mollision Lecture Series] Www.networkearth.org providing Bill Mollison&#039;s permaculture lecture series on video for free download&lt;br /&gt;
*[http://thepiratebay.org/torrent/4070954/An_Introduction_to_Permaculture An Introduction to Permaculture] - a torrent with 12 gigabytes of educational books and videos about permaculture, agroforestry and things like that. Includes &#039;&#039;The One Straw Revolution&#039;&#039; by Masanobu Fukuoka.&lt;br /&gt;
*&#039;&#039;&#039;[http://www.permaculture.info/index.php/Main_Page Permaculture Wiki]&#039;&#039;&#039;&lt;br /&gt;
* [http://www.wikieducator.org/permaculture_design WikiEducator: permaculture design]&lt;br /&gt;
* [http://www.wikieducator.org/category:permaculture WikiEducator: category:permaculture]&lt;br /&gt;
*[http://www.pfaf.org/index.php Plants for a Future Database] &amp;gt;7k species, lots edible perennials&lt;br /&gt;
*[http://www.hort.purdue.edu/newcrop/default.html NewCrop] Perdue&#039;s edible species profiles&lt;br /&gt;
*[http://www.worldagroforestry.org/sea/Products/AFDbases/AF/index.asp AgroForestryTree Database] World Agroforestry Center&#039;s tree species profiles&lt;br /&gt;
*[http://www.worldagroforestry.org/sea/Products/AFDbases/AF/index.asp Forest, Farm, and Community Tree Network] more agroforestry resources&lt;br /&gt;
*[http://nzdl.sadl.uleth.ca/cgi-bin/library?e=d-00000-00---off-0fnl2.2--00-0--0-10-0--0-0---0prompt-10---4------4-0-1l--11-en-50-0--20-about--100-0-1-00-0-0-11-1-0utfZz-8-00-0-1-00-0-0-11-1-0utfZz-8-00&amp;amp;a=d&amp;amp;cl=CL1 Food and Nutrition Library 2.2] lots of free e-books on food, nutrition, farming&lt;br /&gt;
*[http://www.permaculture.org/wp-content/uploads/2013/10/PDC-Outline.pdf Permaculture Research Institute certificate course summary pdf]&lt;br /&gt;
[[Category: Permaculture]]&lt;br /&gt;
[[Category: Yosloa]]&lt;br /&gt;
[[Category: Gabi]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=OpenFarm&amp;diff=123744</id>
		<title>OpenFarm</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=OpenFarm&amp;diff=123744"/>
		<updated>2014-10-28T23:42:13Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: Created page with &amp;quot;OpenFarm is a website with the goal to be the &amp;quot;wikipedia for farming and gardening.&amp;quot;    Developed by Rory Landon Aronson via Kickstarter, the website is in the pre-alpha stage...&amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;OpenFarm is a website with the goal to be the &amp;quot;wikipedia for farming and gardening.&amp;quot;  &lt;br /&gt;
&lt;br /&gt;
Developed by Rory Landon Aronson via Kickstarter, the website is in the pre-alpha stage of development.  The site hopes to create guides for people to grow any plant, and will seek to create a  database that can interface with machines designed for farming and gardening, such as the FarmBot.&lt;br /&gt;
&lt;br /&gt;
https://openfarm.cc&lt;br /&gt;
&lt;br /&gt;
http://go.farmbot.it&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Farmbot&amp;diff=121779</id>
		<title>Farmbot</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Farmbot&amp;diff=121779"/>
		<updated>2014-07-25T00:34:52Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: Created page with &amp;quot;http://go.farmbot.it  Open Source gantry-style precision agricultural system for poly-crop application.  Pioneered by Rory Aronson.&amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;http://go.farmbot.it&lt;br /&gt;
&lt;br /&gt;
Open Source gantry-style precision agricultural system for poly-crop application.  Pioneered by Rory Aronson.&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Permaculture&amp;diff=120255</id>
		<title>Permaculture</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Permaculture&amp;diff=120255"/>
		<updated>2014-06-09T00:25:31Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Online Resources */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;See [[Factor e Farm Site Plan]]&lt;br /&gt;
&lt;br /&gt;
The term related to either &amp;quot;Permanent Agriculture&amp;quot; or &amp;quot;Permanent Culture&amp;quot;. Permaculture is a [http://en.wikipedia.org/wiki/System_thinking systems thinking] design model focusing on sustainable and regenerative systems. It considers ecological theory informed by the lifestyles of indigenous cultures as well as modern technological advancements. Permaculture ranges a diverse field of design methods, anything from perennial-based agricultural systems, to the homestead, to individual or community structures.&lt;br /&gt;
&lt;br /&gt;
The majority of permaculture design is considered within the framework of &#039;[http://en.wikipedia.org/wiki/Zones_(Permaculture) zones]&#039;. David Holmgren [http://en.wikipedia.org/wiki/David_Holmgren] has also theorized a series of &#039;meta-zones&#039; in which he describes spheres of influence. In this meta-zone system, Zone 0 represents a person&#039;s core, their self, whereby energy inputted for change has a high likelihood of impact or result. This series of meta-zones ends at the global level; at the global level one is less likely to experience any form of direct impact.&lt;br /&gt;
&lt;br /&gt;
Permaculture is considered a unique design system because of its [http://en.wikipedia.org/wiki/Permaculture#Core_values core values] and [http://www.permacultureprinciples.com/principles.php principles]. While it was once considered a fringe movement of alternative culture, permaculture is now seen as an intelligent, informed, and truly important body of study:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;blockquote&amp;gt;&#039;&#039;&amp;quot;What permaculturists are doing is the most important activity that any group is doing on the planet. We don&#039;t know what details of a truly sustainable future are going to be like, but we need options, we need people experimenting in all kinds of ways and permaculturists are one of the critical gangs that are doing that.&amp;quot;&#039;&#039; &amp;lt;/blockquote&amp;gt;&amp;lt;div style=&amp;quot;text-align: right; direction: ltr; margin-left: 1em;&amp;quot;&amp;gt;- Dr David Suzuki geneticist, broadcaster, and international environmental advocate&amp;lt;/div&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;[http://en.wikipedia.org/wiki/Permaculture#References Wikipedia: permaculture References et al]&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
There is a growing movement dealing with [[Open Source Permaculture]], in which all the agricultural information and genetic resources are shared.&lt;br /&gt;
&lt;br /&gt;
==Zoning==&lt;br /&gt;
&#039;&#039;&#039;Permaculture Zones&#039;&#039;&#039;&lt;br /&gt;
([http://en.wikipedia.org/wiki/Permaculture from Wikipedia])&lt;br /&gt;
are a way of organizing design elements in a human environment on the basis of the frequency of human use and plant or animal needs. Frequently manipulated or harvested elements of the design are located close to the house in zones 1 and 2. Less frequently used or manipulated elements, and elements that benefit from isolation (such as wild species) are farther away. Zones is about positioning things appropriately. Zones are numbered from 0 to 5:[citation needed]&lt;br /&gt;
*Zone 0&lt;br /&gt;
**The house, or home center. Here permaculture principles would be applied in terms of aiming to reduce energy and water needs, harnessing natural resources such as sunlight, and generally creating a harmonious, sustainable environment in which to live and work. Zone 0 is an informal designation, which is not specifically defined in Mollison&#039;s book.&lt;br /&gt;
*Zone 1&lt;br /&gt;
**The zone nearest to the house, the location for those elements in the system that require frequent attention, or that need to be visited often, such as salad crops, herb plants, soft fruit like strawberries or raspberries, greenhouse and cold frames, propagation area, worm compost bin for kitchen waste, etc. Raised beds are often used in zone 1 in urban areas.&lt;br /&gt;
*Zone 2&lt;br /&gt;
**This area is used for siting perennial plants that require less frequent maintenance, such as occasional weed control or pruning, including currant bushes and orchards. This would also be a good place for beehives, larger scale composting bins, and so on.&lt;br /&gt;
*Zone 3&lt;br /&gt;
**The area where maincrops are grown, both for domestic use and for trade purposes. After establishment, care and maintenance required are fairly minimal (provided mulches and similar things are used), such as watering or weed control maybe once a week.&lt;br /&gt;
*Zone 4&lt;br /&gt;
**A semi-wild area. This zone is mainly used for forage and collecting wild food as well as timber production.&lt;br /&gt;
*Zone 5&lt;br /&gt;
**A wild area. There is no human intervention in zone 5 apart from the observation of natural ecosystems and cycles.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
&lt;br /&gt;
* [[Open Source Permaculture]]&lt;br /&gt;
* [[Permaculture Wiki]]&lt;br /&gt;
* [[Ekopedia: Permaculture]]&lt;br /&gt;
* [[Appropedia: Permaculture]]&lt;br /&gt;
&lt;br /&gt;
==Online Resources==&lt;br /&gt;
*[http://thepiratebay.org/torrent/5040528/PERMACULTURE__A_Designers_Manual__Bill_Mollison &#039;&#039;Permaculture: A Designer&#039;s Manual&#039;&#039;] by Bill Mollison. The book that started it all, available on The Pirate Bay.&lt;br /&gt;
*[http://www.networkearth.org/perma/culture.html Bill Mollision Lecture Series] Www.networkearth.org providing Bill Mollison&#039;s permaculture lecture series on video for free download&lt;br /&gt;
*[http://thepiratebay.org/torrent/4070954/An_Introduction_to_Permaculture An Introduction to Permaculture] - a torrent with 12 gigabytes of educational books and videos about permaculture, agroforestry and things like that. Includes &#039;&#039;The One Straw Revolution&#039;&#039; by Masanobu Fukuoka.&lt;br /&gt;
*&#039;&#039;&#039;[http://www.permaculture.info/index.php/Main_Page Permaculture Wiki]&#039;&#039;&#039;&lt;br /&gt;
* [http://www.wikieducator.org/permaculture_design WikiEducator: permaculture design]&lt;br /&gt;
* [http://www.wikieducator.org/category:permaculture WikiEducator: category:permaculture]&lt;br /&gt;
*[http://www.pfaf.org/index.php Plants for a Future Database] &amp;gt;7k species, lots edible perennials&lt;br /&gt;
*[http://www.hort.purdue.edu/newcrop/default.html NewCrop] Perdue&#039;s edible species profiles&lt;br /&gt;
*[http://www.worldagroforestry.org/sea/Products/AFDbases/AF/index.asp AgroForestryTree Database] World Agroforestry Center&#039;s tree species profiles&lt;br /&gt;
*[http://www.worldagroforestry.org/sea/Products/AFDbases/AF/index.asp Forest, Farm, and Community Tree Network] more agroforestry resources&lt;br /&gt;
*[http://nzdl.sadl.uleth.ca/cgi-bin/library?e=d-00000-00---off-0fnl2.2--00-0--0-10-0--0-0---0prompt-10---4------4-0-1l--11-en-50-0--20-about--100-0-1-00-0-0-11-1-0utfZz-8-00-0-1-00-0-0-11-1-0utfZz-8-00&amp;amp;a=d&amp;amp;cl=CL1 Food and Nutrition Library 2.2] lots of free e-books on food, nutrition, farming&lt;br /&gt;
&lt;br /&gt;
[[Category: Permaculture]]&lt;br /&gt;
[[Category: Yosloa]]&lt;br /&gt;
[[Category: Gabi]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Car&amp;diff=115809</id>
		<title>Car</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Car&amp;diff=115809"/>
		<updated>2014-03-02T23:06:49Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* See Also */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{GVCS Header}}&lt;br /&gt;
&lt;br /&gt;
[[Image:automobile.png|thumb|right|400px|OSCar Concept]]&lt;br /&gt;
&lt;br /&gt;
=Overview=&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Update - July, 2013 - See [[Yann Log]]&lt;br /&gt;
&lt;br /&gt;
The Open Source {{Car}} is an automobile designed for transporting passengers.&lt;br /&gt;
&lt;br /&gt;
{{Video}}&lt;br /&gt;
&lt;br /&gt;
=Team Wikispeed=&lt;br /&gt;
&lt;br /&gt;
Joe Justice and [[Team Wikispeed]] are awesome and we&#039;re planning a formal partnership!&lt;br /&gt;
&lt;br /&gt;
[http://opensourceecology.org/wiki/Team_Wikispeed_Collaboration Team Wikispeed Collaboration]&lt;br /&gt;
&lt;br /&gt;
The instructions for copying Team Wikispeed&#039;s SGT01 car design are currently being built. You can find them here [[Wikispeed_SGT01]]&lt;br /&gt;
&lt;br /&gt;
=Team Vélocar=&lt;br /&gt;
[[Vélocar]] join OSE mouvement. Vélocar is the OSE microcar&lt;br /&gt;
{{VC}}&lt;br /&gt;
&lt;br /&gt;
=Detailed Description=&lt;br /&gt;
&lt;br /&gt;
The OS Car will be a lightweight and aerodynamic two passenger long range car that will be fueled with ethanol biodiesel. The current plan is for the car to have a reverse trike configuration: two front wheels and one rear wheel which is the only driven wheel.  The two main benefits of the reverse trike design are lower cost and weight due to one less wheel, and lower wind drag due to the rain drop shape of the body.  The construction of the car will be a steel space frame covered with non-structural polymer or composite panels.  The proposed powertrain is a hybrid hydraulic system which includes a single cylinder engine that runs a hydraulic pump which directly powers a hydraulic wheel motor used to drive the car and which compresses a gas in an accumulator to store energy.  Gas in the accumulator will also be compressed via regenerative braking when the hydraulic motor is run in reverse to slow the car down.  Cost control and quick development will be maintained by using donor vehicle parts and off-the-shelf parts.  Components that cannot be easily manufactured such as brake calipers, steering knuckles, and rims will be sourced from a donor vehicle and components such as instruments, wiring, and hydraulic components will be off-the-shelf components.  &lt;br /&gt;
&lt;br /&gt;
As the car design matures, some components from donor vehicles and off-the-shelf components can be replaced by scratch-built open source components.  If desired, forks can be spawned from the original project for variants such a four or five passenger car, or perhaps a car with a hybrid electric powertrain.&lt;br /&gt;
&lt;br /&gt;
=Product Ecology=&lt;br /&gt;
&lt;br /&gt;
{{Product Ecology&lt;br /&gt;
&lt;br /&gt;
|Product={{Car}}&lt;br /&gt;
&lt;br /&gt;
|From=&lt;br /&gt;
*{{Furnace}}&lt;br /&gt;
*{{Industrial Robot}}&lt;br /&gt;
*{{Welder}}&lt;br /&gt;
*{{Torch Table}}&lt;br /&gt;
*{{3D Printer}}&lt;br /&gt;
*{{Multimachine}}&lt;br /&gt;
*{{Power Cube}}&lt;br /&gt;
*{{Hydraulic Motor}}&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
|Uses=&lt;br /&gt;
*{{Power Cube}}&lt;br /&gt;
* [[Roads]]&lt;br /&gt;
&lt;br /&gt;
|Creates=&lt;br /&gt;
* [[Transportation]]&lt;br /&gt;
&lt;br /&gt;
|Components=&lt;br /&gt;
*[[Wheels]]&lt;br /&gt;
*Windows&lt;br /&gt;
*Frame&lt;br /&gt;
*Engine&lt;br /&gt;
*Drivetrain&lt;br /&gt;
*Suspension&lt;br /&gt;
*Controls&lt;br /&gt;
*Steering Column&lt;br /&gt;
*AC&lt;br /&gt;
*Brakes&lt;br /&gt;
*Lights&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Status==&lt;br /&gt;
&lt;br /&gt;
The &#039;&#039;&#039;Open Source Car&#039;&#039;&#039; is currently in the [[Open_Source_Car/Research_Development|Research Phase of product development]].&lt;br /&gt;
&lt;br /&gt;
==The Open Source Car in the media==&lt;br /&gt;
The &#039;&#039;&#039;Open Source Car&#039;&#039;&#039; has been covered in the following online media sources&lt;br /&gt;
* [http://blog.opensourceecology.org/2012/03/press-release-ose-wikispeed-collaboration/ Press Release OSE-Wikispeed Collaboration]&lt;br /&gt;
* [http://www.intelligentcarleasing.com/blog/car-technology-development-future-productions/ Car Technologies of the Future]&lt;br /&gt;
* [http://300mpg.org/2011/11/10/a-visit-to-the-open-source-ecology-project/ A Visit To the Open Source Ecology Project]&lt;br /&gt;
* [http://p2pfoundation.net/Open_Source_Ecology Open Source Ecology P2P Foundation]&lt;br /&gt;
==See Also==&lt;br /&gt;
*{{Truck}}&lt;br /&gt;
*[[Aerial Ropeways]]&lt;br /&gt;
*[[Modular Vehicles]]&lt;br /&gt;
*[http://www.osvehicle.com TABBY Open Source Vehicle]&lt;br /&gt;
{{GVCS Footer}}&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Sweet_Potatoes&amp;diff=115795</id>
		<title>Sweet Potatoes</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Sweet_Potatoes&amp;diff=115795"/>
		<updated>2014-03-02T05:35:03Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=Temperature=&lt;br /&gt;
&lt;br /&gt;
*Cannot handle cold&lt;br /&gt;
&lt;br /&gt;
*Can handle hot&lt;br /&gt;
&lt;br /&gt;
*Around 60 degrees fahrenhait ideal&lt;br /&gt;
&lt;br /&gt;
=Sunlight=&lt;br /&gt;
&lt;br /&gt;
*Ideally in full sun&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
&lt;br /&gt;
*During the first 2 weeks after planting, spray each plant with 10 seconds of water from a garden hose (1/2 diameter) at 50psi or equivalent volume of water.&lt;br /&gt;
&lt;br /&gt;
*After the first 2 weeks, spray each plant similarly as before but once a week if the weather has been dry.&lt;br /&gt;
&lt;br /&gt;
=Planting Timing=&lt;br /&gt;
&lt;br /&gt;
*Plant after any risk of frost.&lt;br /&gt;
&lt;br /&gt;
*Planting with frost coming later is situationally ok because the water inside a grown sweet potato causes a moderating effect that enables the plant to last in the cold longer than it would normally as a new split.&lt;br /&gt;
&lt;br /&gt;
*Beauregard sweet potatoes are harvest-ready in 90 days.&lt;br /&gt;
&lt;br /&gt;
*Centennial sweet potatoes are harvest-ready in 100 days.&lt;br /&gt;
&lt;br /&gt;
=Planting Material=&lt;br /&gt;
&lt;br /&gt;
*Sweet potatoes grow from splits, thin root-like things.&lt;br /&gt;
&lt;br /&gt;
*If you cut a sweet potato in half then submerge it in water, the splits will grow.&lt;br /&gt;
&lt;br /&gt;
=Spacing=&lt;br /&gt;
&lt;br /&gt;
*Plant sweet potatoes 2-4 inches below the topsoil surface&lt;br /&gt;
&lt;br /&gt;
*Plant sweet potatoes 12-18 inches apart in rows&lt;br /&gt;
&lt;br /&gt;
*Plant the rows at least 2-3 ft apart&lt;br /&gt;
&lt;br /&gt;
=How to Plant=&lt;br /&gt;
&lt;br /&gt;
*Till the ground to loosen the soil&lt;br /&gt;
&lt;br /&gt;
*Make holes in the soil in rows and put the splits into them&lt;br /&gt;
&lt;br /&gt;
*Cover the holes with soil and lightly tamp them&lt;br /&gt;
&lt;br /&gt;
[[Category: Growing plants]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Polyface_Farms&amp;diff=115793</id>
		<title>Polyface Farms</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Polyface_Farms&amp;diff=115793"/>
		<updated>2014-03-02T05:22:59Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Breadcrumb|Food and Agriculture|Animal Husbandry}}&lt;br /&gt;
&lt;br /&gt;
[http://www.polyfacefarms.com Polyface Farms], led by Joel Salatin, is a permaculture farm that leads the way in sustainable production of meat. They endorse transparency and the sharing of knowledge of good farming practices, so that others can replicate their success.&lt;br /&gt;
&lt;br /&gt;
Pastured broiler chickens serve as the farm&#039;s centerpiece enterprise, but other animals are also raised, including laying chickens, cows, pigs, turkeys and rabbits.  &lt;br /&gt;
&lt;br /&gt;
==Methods==&lt;br /&gt;
*Synergistic poly-cultures with seasonal production and rhythms (as opposed to single focused farms or CAFOs).&lt;br /&gt;
*Growing pastures with a healthy, lively soil continuously built up with organic matter (as opposed to tillage-centric farming, which wears down soil with time).&lt;br /&gt;
*Capitalizing on animals&#039; unique traits and activities (for example, chickens rotate behind cows, sanitizing bugs and helping spread cow manure).&lt;br /&gt;
*Rotating animals using low-tech portable pens, or high tech electric fencing.&lt;br /&gt;
*Focus on value adding enterprises and assets with high return per time and capital investment (as opposed to high-capital, low-return machinery like fancy new trucks and buildings)&lt;br /&gt;
*Focus on function over form.&lt;br /&gt;
&lt;br /&gt;
==More Information==&lt;br /&gt;
*Salatin has written many books, such as &amp;quot;You Can Farm&amp;quot;, that go into more detail on his farming methods.  &lt;br /&gt;
*The farm has an apprenticeship system for sharing practices with paid interns.&lt;br /&gt;
*The farm is generally open to any visitors. &lt;br /&gt;
*http://www.polyfacefarms.com&lt;br /&gt;
*[http://www.youtube.com/watch?v=TQPN1O03z8I#t=10m47s Discussion of Polyface Farms in a TED talk]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Chicken&amp;diff=114058</id>
		<title>Chicken</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Chicken&amp;diff=114058"/>
		<updated>2014-01-26T06:01:24Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Research */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;==Overview==&lt;br /&gt;
Chickens are very useful animals. Tasty too! &lt;br /&gt;
&lt;br /&gt;
==Product Ecology==&lt;br /&gt;
&#039;&#039;&#039;Eats&#039;&#039;&#039;&lt;br /&gt;
*Rodents&lt;br /&gt;
*Flies&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Uses&#039;&#039;&#039;&lt;br /&gt;
*[[Coop]]&lt;br /&gt;
*[[Incubator]]&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Creates&#039;&#039;&#039;&lt;br /&gt;
*[[Meat]]&lt;br /&gt;
*[[Eggs]]&lt;br /&gt;
&lt;br /&gt;
==Research==&lt;br /&gt;
*[[Incubator]]&lt;br /&gt;
*http://www.backyardchickens.com/a/getting-started-raising-chickens&lt;br /&gt;
*[[Chicken Processing]]&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
*[[Animals]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Chicken&amp;diff=114057</id>
		<title>Chicken</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Chicken&amp;diff=114057"/>
		<updated>2014-01-26T05:54:33Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Product Ecology */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;==Overview==&lt;br /&gt;
Chickens are very useful animals. Tasty too! &lt;br /&gt;
&lt;br /&gt;
==Product Ecology==&lt;br /&gt;
&#039;&#039;&#039;Eats&#039;&#039;&#039;&lt;br /&gt;
*Rodents&lt;br /&gt;
*Flies&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Uses&#039;&#039;&#039;&lt;br /&gt;
*[[Coop]]&lt;br /&gt;
*[[Incubator]]&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;Creates&#039;&#039;&#039;&lt;br /&gt;
*[[Meat]]&lt;br /&gt;
*[[Eggs]]&lt;br /&gt;
&lt;br /&gt;
==Research==&lt;br /&gt;
*[[Incubator]]&lt;br /&gt;
*[[Chicken Processing]]&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
*[[Animals]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Open_Source_Chicken_Incubator&amp;diff=114056</id>
		<title>Open Source Chicken Incubator</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Open_Source_Chicken_Incubator&amp;diff=114056"/>
		<updated>2014-01-26T05:51:54Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Better Designs */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Category=Farm equipment}}&lt;br /&gt;
=Introduction=&lt;br /&gt;
&lt;br /&gt;
Chickens may be propagated readily from fertile eggs - so freerange chickens can be maintained in a healthy population even in presence of heavy losses to predators. A simple incubator should be available on any diversified farm. Natural chicken birth rates typically happen too late and too infrequently in the season for the chicken population to become self-sustaining. Freerange chickens, which do not require supplemental feeding - could be a great part of a community local food strategy.&lt;br /&gt;
&lt;br /&gt;
In short, any Global Village should have an open source incubator. These are rather cheap - $40 - but it is useful to make one that is open source from a light bulb, thermostat, and an automatic rolling device.&lt;br /&gt;
&lt;br /&gt;
The trouble with an incubator is that the eggs must be moved regularly. What&#039;s a simple design that can address this issue?&lt;br /&gt;
&lt;br /&gt;
=Design Implemented in 2005=&lt;br /&gt;
&lt;br /&gt;
We built a large incubator that could hold 200 eggs. It did not work well, as shifting it manually every day turns out to be a chore that one must attend to diligently.&lt;br /&gt;
&lt;br /&gt;
[[Image:incubator.jpg]]&lt;br /&gt;
&lt;br /&gt;
=Better Designs=&lt;br /&gt;
&lt;br /&gt;
Please suggest better designs with automatic egg turning.&lt;br /&gt;
&lt;br /&gt;
*[http://www.backyardchickens.com/a/homemade-chicken-egg-incubator-designs-pictures  DIY incubator designs] from backyardchickens.com&lt;br /&gt;
&lt;br /&gt;
==Research==&lt;br /&gt;
*http://incubatorwarehouse.com/incubating-eggs/getting-started-egg-incubating&lt;br /&gt;
*http://www.surehatch.co.za/Incubator-terminology-explained.htm&lt;br /&gt;
*http://www.backyardchickens.com/a/how-to-incubate-hatch-eggs-just-21-days-from-egg-to-chicken&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Incubator]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Aquaponics&amp;diff=114055</id>
		<title>Aquaponics</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Aquaponics&amp;diff=114055"/>
		<updated>2014-01-26T05:23:03Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: Previous link outdated; now updated&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Category=Controlled-environment growing}}&lt;br /&gt;
Aquaponics is the combination of [[aquaculture]] (fish farming) and [[hydroponics]] (growing plants using water rather than soil). It is an incredibly productive means of growing food, allowing a person to sustain themselves on less than 100m&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;. Some people with large systems growing 5000 plants a week have reported that, once their system is set up, they earn €1000 a week spending 2 hours a day at work. Aquaponics is ecologically sound and sustainable. Scalable designs for systems are available online.&lt;br /&gt;
&lt;br /&gt;
See also:&lt;br /&gt;
&lt;br /&gt;
* [[Aquaponics/Research]]&lt;br /&gt;
* [[Aquaponics/Suggested Fish]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==How aquaponics works==&lt;br /&gt;
[[File:Aquaponics.gif|center|850px]]&lt;br /&gt;
Edible fish are grown in a tank. Their poop enriches the water with nutrients.&amp;lt;br&amp;gt;This enriched water is pumped into gravel beds with edible plants rooted in them. As the water flows through the gravel beds, the plants&#039; roots and the bacteria that grow on the gravel take nutrients from the water. This both nourishes the plants and cleans the water.&amp;lt;br&amp;gt;The water, now clean, flows back into the fish tank.&lt;br /&gt;
&lt;br /&gt;
The system provides fish, vegetables and herbs for people. Some systems have grown fruit trees aquaponically, but this is still experimental. &lt;br /&gt;
&lt;br /&gt;
==Feeding the fish==&lt;br /&gt;
*&#039;&#039;&#039;Commercially available fish food&#039;&#039;&#039; is the most common way of feeding the fish in aquaponics. The disadvantage is that your system then requires constant input of resources.&lt;br /&gt;
*&#039;&#039;&#039;Algae&#039;&#039;&#039; will grow endemically in nearly any body of still water. Fish will eat these, but in practice it is not possible to grow enough algae to sustain an aquaponic system. You can increase the fraction of the fish&#039;s requirements met by algae by providing a surface underwater for the algae to grow on. (Remember when you had a goldfish as a kid, and the little castle in his tank got covered with green stuff?) Use something with high surface area.&lt;br /&gt;
*&#039;&#039;&#039;[[Duckweed]]&#039;&#039;&#039;, an extremely fast-growing high-protein pond weed, can be grown on the surface of the tank. There are species of duckweed adapted to nearly all climates. &lt;br /&gt;
*&#039;&#039;&#039;Insects&#039;&#039;&#039;. Herbs that attract insects can be grown in rafts on the surface of the fishtank. Mulberry and tea trees are used in aquaculture to attract insects as fish food.&lt;br /&gt;
*&#039;&#039;&#039;[[Worms]]&#039;&#039;&#039; from a compost heap can be fed to the fish. The worms can be fed with grass cuttings, food waste and other organic waste. Some of the compost from the wormery can be added to the water input to the gravel beds; this diversifies the nutrients the plants receive. Aquaponics combined with vermiculture is nearly a closed-loop system. Organic waste is converted into worms, worms into fish, fish into vegetables. The fish and the vegetables are converted into human life!&lt;br /&gt;
*&#039;&#039;&#039;[[Black Soldier Fly]] larvae&#039;&#039;&#039;. An integrated Black Soldier Fly and aquaponics system can turn 12kg of food waste into 1kg of delicious fish, plus the vegetables in the grow-beds.&lt;br /&gt;
&lt;br /&gt;
Duckweed grows very fast and Black Soldier Fly larvae convert very efficiently. A system with a small duckweed tank, a wormery and a Black Soldier Fly bioconversion unit should have no problem getting by without buying fish food. This cuts operating costs to near zero. The more varied the fish&#039;s diet, the better they are likely to taste.&lt;br /&gt;
&lt;br /&gt;
==System design==&lt;br /&gt;
A rule of thumb is that the volume of the gravel beds should be twice that of the fish tank. Gravel beds would typically be about 30cm deep.&lt;br /&gt;
&lt;br /&gt;
Fish can normally be stocked at 2-3kg of fish per cubic meter of water.&lt;br /&gt;
&lt;br /&gt;
The species of fish used depends on the climate. &lt;br /&gt;
&lt;br /&gt;
==Water quality==&lt;br /&gt;
===Temperature===&lt;br /&gt;
The required temperature depends on the species of fish you want to grow. If you choose fish that are adapted to your local climate, you will save money on heating costs. Digital methods to measure temperatre, pH, dissolved oxygen, and possibly other parameters should be investigated as a way to gather information for system optimization, indications of system problems, and eventually labor savings.&lt;br /&gt;
&lt;br /&gt;
===pH===&lt;br /&gt;
pH needs to be tested every week or more. A pH of around 6.2-6.4 is best, though this varies somewhat depending on the species of fish.&lt;br /&gt;
&lt;br /&gt;
If pH gets too low, it could be a sign that parts of the gravel bed have developed anaerobic bacteria, which produce acids. If this happens, remove any plants with very large root systems, as these create pockets where air cannot get to.&lt;br /&gt;
&lt;br /&gt;
If the pH is too high, it is generally a sign that the plant biofilters are not keeping up with the fish&#039;s production of ammonia. Plant more plants.&lt;br /&gt;
&lt;br /&gt;
===Oxygenation===&lt;br /&gt;
Aquaponic systems require an air pump underwater. Having the flow from the gravel beds falling from a height and splashing into the fish tank will help oxygenate it too.&lt;br /&gt;
&lt;br /&gt;
It is very important to keep the aerator pump running at all times. If the oxygen supply to the fish is cut off for just 45 minutes, you will have dead fish. For this reason, it is wise to have a backup air pump that will kick in if your pump fails. There can never be too much oxygen in the water; excess oxygen will bubble to the surface and escape.&lt;br /&gt;
&lt;br /&gt;
===Nutrients===&lt;br /&gt;
A lot of aquaponic systems require calcium, potassium and iron to be added about every two weeks. If you have a wormery and add a little of the worm-compost to the water flowing into the gravel beds, this should provide these missing nutrients.&lt;br /&gt;
&lt;br /&gt;
==Open-source systems==&lt;br /&gt;
* [http://farmfountain.com/howto/index.html Farm Fountain], an open-source, indoor, vertical aquaponic system.&lt;br /&gt;
* [http://www.fastonline.org/ Barrelponics] - Aquaponics in a barrel. Barrelponics definitely meets the [[OSE Specifications]]; it is a scalable, environmentally-friendly, open-source local food system.&lt;br /&gt;
* [http://blog.automicrofarm.com/ AutoMicroFarm] An open source barrelponics system under development. &lt;br /&gt;
* [http://theurbanfarmingguys.com/ The Urban Farming Guys] in Kansas City are developing a low-cost Aquaponics system. The [http://theurbanfarmingguys.com/aquaponics-how-to instructional video] outlines the principles of aquaponics. [http://theurbanfarmingguys.com/wiki/knowledgebase-2/aquaculture-aquaponics/aquaponics-system-plans/40-gallon-tote-basement-system Design for a small aquaponic system].&lt;br /&gt;
&lt;br /&gt;
==Work to be done==&lt;br /&gt;
Aquaponics is still in its infancy and is developing every year. More research needs to be done into polycultured systems that can grow more than one type of fish. (Different fish require different water temperatures and pH, so some species are incompatible. However, tilapia and prawns - which are both delicious - have been farmed together in fish farms [http://www.aquaticcommunity.com/tilapia/prawns.php].) Another avenue of research would be to use lights or herbs to attract insects to the tank where the fish can eat them; another step towards making a more diverse, more closed-loop system.&lt;br /&gt;
&lt;br /&gt;
===Concept for compost-heated, compost-powered aquaponic system===&lt;br /&gt;
Say you want to set up an aquaponics system. You decide to grow tilapia, because they have many advantages for aquaponics. But tilapia like a water temperature of 28-30°C (82-86°F) and you live in a climate where it gets cold in winter. Using good [[Greenhouses|greenhouse design]], you are able to stabilize the temperature year-round, but there&#039;s no way you&#039;ll get it up to 28-30° without a heat source. This will require an input of power, in addition to the power needed for the pump. &lt;br /&gt;
&lt;br /&gt;
There could be a way to kill two birds with one stone: build a [[thermophilic compost]] heap against one side of the fish tank. The heat from the compost will warm the water up. Care must be taken to keep the temperature of the greenhouse stable, as the pile can get up to 50°C (122°F). Secondly, for the pump you keep a [[Stirling Engine with Hydraulic Transmission|stirling engine]] at the compost heap. This is driven by the heat of the composting and is hydraulically connected to the water pump. Just an idea...&lt;br /&gt;
&lt;br /&gt;
==Resources==&lt;br /&gt;
* [http://www.fastonline.org/?page_id=32 Aquaponics info at F.A.S.T.]&lt;br /&gt;
* [http://www.backyardaquaponics.com Backyard Aquaponics] - Includes a thriving [http://www.backyardaquaponics.com/forum/ forum]&lt;br /&gt;
* [http://www.growingpower.org/ Growing Power] - a non-profit dedicated to educating people about growing food&lt;br /&gt;
* [http://www.friendlyaquaponics.com/ Friendly Aquaponics] - contains plans for systems&lt;br /&gt;
* [http://www.aquaponicsjournal.com/articles.php Aquaponics Journal articles]&lt;br /&gt;
* [http://en.wikipedia.org/wiki/Aquaponics#Further_reading Wikipedia aquaponics article] - Further Reading section&lt;br /&gt;
* [https://www.aquaponics.com/aquaponics/aquaponicsoverview.php &#039;&#039;Aquaponics Information&#039;&#039; at aquaponics.com]&lt;br /&gt;
* [[appropedia:Aquaponics|Aquaponics on Appropedia]]&lt;br /&gt;
* [http://www.windward.org/ Windward] - a self-sufficient community that uses aquaponics. They have an informative website.&lt;br /&gt;
* [http://socalfishfarm.com/fish/ SoCal Fish Farm] - a commercial aquaponics operation. Their website has good information on tilapia, shrimp, aquaponics and [[Greenhouses|solar greenhouses]]&lt;br /&gt;
* [http://passionforproduce.net/ Passion For Produce] - backyard aquaponics garden in Sarasota, FL&lt;br /&gt;
* [http://www.aquaponics-shop.com Aquaponics Shop] - Australia dedicated aquaponics shop with commercial assistance and research&lt;br /&gt;
* [http://aquaponics-plans.allecofriendly.info Aquaponics Plans] - An enthusiast&#039;s blog about her personal experience with aquaponics and aquaponics plans.&lt;br /&gt;
&lt;br /&gt;
* [http://aquaponicsideasonline.com Aquaponics System] - An aquaponics enthusiast&#039;s website providing ideas and advice for setting aquaponics gardens.&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Aquaponics&amp;diff=114054</id>
		<title>Aquaponics</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Aquaponics&amp;diff=114054"/>
		<updated>2014-01-26T05:16:35Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Category=Controlled-environment growing}}&lt;br /&gt;
Aquaponics is the combination of [[aquaculture]] (fish farming) and [[hydroponics]] (growing plants using water rather than soil). It is an incredibly productive means of growing food, allowing a person to sustain themselves on less than 100m&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;. Some people with large systems growing 5000 plants a week have reported that, once their system is set up, they earn €1000 a week spending 2 hours a day at work. Aquaponics is ecologically sound and sustainable. Scalable designs for systems are available online.&lt;br /&gt;
&lt;br /&gt;
See also:&lt;br /&gt;
&lt;br /&gt;
* [[Aquaponics/Research]]&lt;br /&gt;
* [[Aquaponics/Suggested Fish]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==How aquaponics works==&lt;br /&gt;
[[File:Aquaponics.gif|center|850px]]&lt;br /&gt;
Edible fish are grown in a tank. Their poop enriches the water with nutrients.&amp;lt;br&amp;gt;This enriched water is pumped into gravel beds with edible plants rooted in them. As the water flows through the gravel beds, the plants&#039; roots and the bacteria that grow on the gravel take nutrients from the water. This both nourishes the plants and cleans the water.&amp;lt;br&amp;gt;The water, now clean, flows back into the fish tank.&lt;br /&gt;
&lt;br /&gt;
The system provides fish, vegetables and herbs for people. Some systems have grown fruit trees aquaponically, but this is still experimental. &lt;br /&gt;
&lt;br /&gt;
==Feeding the fish==&lt;br /&gt;
*&#039;&#039;&#039;Commercially available fish food&#039;&#039;&#039; is the most common way of feeding the fish in aquaponics. The disadvantage is that your system then requires constant input of resources.&lt;br /&gt;
*&#039;&#039;&#039;Algae&#039;&#039;&#039; will grow endemically in nearly any body of still water. Fish will eat these, but in practice it is not possible to grow enough algae to sustain an aquaponic system. You can increase the fraction of the fish&#039;s requirements met by algae by providing a surface underwater for the algae to grow on. (Remember when you had a goldfish as a kid, and the little castle in his tank got covered with green stuff?) Use something with high surface area.&lt;br /&gt;
*&#039;&#039;&#039;[[Duckweed]]&#039;&#039;&#039;, an extremely fast-growing high-protein pond weed, can be grown on the surface of the tank. There are species of duckweed adapted to nearly all climates. &lt;br /&gt;
*&#039;&#039;&#039;Insects&#039;&#039;&#039;. Herbs that attract insects can be grown in rafts on the surface of the fishtank. Mulberry and tea trees are used in aquaculture to attract insects as fish food.&lt;br /&gt;
*&#039;&#039;&#039;[[Worms]]&#039;&#039;&#039; from a compost heap can be fed to the fish. The worms can be fed with grass cuttings, food waste and other organic waste. Some of the compost from the wormery can be added to the water input to the gravel beds; this diversifies the nutrients the plants receive. Aquaponics combined with vermiculture is nearly a closed-loop system. Organic waste is converted into worms, worms into fish, fish into vegetables. The fish and the vegetables are converted into human life!&lt;br /&gt;
*&#039;&#039;&#039;[[Black Soldier Fly]] larvae&#039;&#039;&#039;. An integrated Black Soldier Fly and aquaponics system can turn 12kg of food waste into 1kg of delicious fish, plus the vegetables in the grow-beds.&lt;br /&gt;
&lt;br /&gt;
Duckweed grows very fast and Black Soldier Fly larvae convert very efficiently. A system with a small duckweed tank, a wormery and a Black Soldier Fly bioconversion unit should have no problem getting by without buying fish food. This cuts operating costs to near zero. The more varied the fish&#039;s diet, the better they are likely to taste.&lt;br /&gt;
&lt;br /&gt;
==System design==&lt;br /&gt;
A rule of thumb is that the volume of the gravel beds should be twice that of the fish tank. Gravel beds would typically be about 30cm deep.&lt;br /&gt;
&lt;br /&gt;
Fish can normally be stocked at 2-3kg of fish per cubic meter of water.&lt;br /&gt;
&lt;br /&gt;
The species of fish used depends on the climate. &lt;br /&gt;
&lt;br /&gt;
==Water quality==&lt;br /&gt;
===Temperature===&lt;br /&gt;
The required temperature depends on the species of fish you want to grow. If you choose fish that are adapted to your local climate, you will save money on heating costs. Digital methods to measure temperatre, pH, dissolved oxygen, and possibly other parameters should be investigated as a way to gather information for system optimization, indications of system problems, and eventually labor savings.&lt;br /&gt;
&lt;br /&gt;
===pH===&lt;br /&gt;
pH needs to be tested every week or more. A pH of around 6.2-6.4 is best, though this varies somewhat depending on the species of fish.&lt;br /&gt;
&lt;br /&gt;
If pH gets too low, it could be a sign that parts of the gravel bed have developed anaerobic bacteria, which produce acids. If this happens, remove any plants with very large root systems, as these create pockets where air cannot get to.&lt;br /&gt;
&lt;br /&gt;
If the pH is too high, it is generally a sign that the plant biofilters are not keeping up with the fish&#039;s production of ammonia. Plant more plants.&lt;br /&gt;
&lt;br /&gt;
===Oxygenation===&lt;br /&gt;
Aquaponic systems require an air pump underwater. Having the flow from the gravel beds falling from a height and splashing into the fish tank will help oxygenate it too.&lt;br /&gt;
&lt;br /&gt;
It is very important to keep the aerator pump running at all times. If the oxygen supply to the fish is cut off for just 45 minutes, you will have dead fish. For this reason, it is wise to have a backup air pump that will kick in if your pump fails. There can never be too much oxygen in the water; excess oxygen will bubble to the surface and escape.&lt;br /&gt;
&lt;br /&gt;
===Nutrients===&lt;br /&gt;
A lot of aquaponic systems require calcium, potassium and iron to be added about every two weeks. If you have a wormery and add a little of the worm-compost to the water flowing into the gravel beds, this should provide these missing nutrients.&lt;br /&gt;
&lt;br /&gt;
==Open-source systems==&lt;br /&gt;
* [http://farmfountain.com/howto/index.html Farm Fountain], an open-source, indoor, vertical aquaponic system.&lt;br /&gt;
* [http://www.fastonline.org/ Barrelponics] - Aquaponics in a barrel. Barrelponics definitely meets the [[OSE Specifications]]; it is a scalable, environmentally-friendly, open-source local food system.&lt;br /&gt;
* [http://blog.automicrofarm.com/ AutoMicroFarm] An open source barrelponics system under development. &lt;br /&gt;
* [http://theurbanfarmingguys.com/ The Urban Farming Guys] in Kansas City are developing a low-cost Aquaponics system. The [http://theurbanfarmingguys.com/aquaponics-how-to instructional video] outlines the principles of aquaponics. [http://theurbanfarmingguys.com/wiki/knowledgebase-2/aquaculture-aquaponics/aquaponics-system-plans/40-gallon-tote-basement-system Design for a small aquaponic system].&lt;br /&gt;
&lt;br /&gt;
==Work to be done==&lt;br /&gt;
Aquaponics is still in its infancy and is developing every year. More research needs to be done into polycultured systems that can grow more than one type of fish. (Different fish require different water temperatures and pH, so some species are incompatible. However, tilapia and prawns - which are both delicious - have been farmed together in fish farms [http://www.aquaticcommunity.com/tilapia/prawns.php].) Another avenue of research would be to use lights or herbs to attract insects to the tank where the fish can eat them; another step towards making a more diverse, more closed-loop system.&lt;br /&gt;
&lt;br /&gt;
===Concept for compost-heated, compost-powered aquaponic system===&lt;br /&gt;
Say you want to set up an aquaponics system. You decide to grow tilapia, because they have many advantages for aquaponics. But tilapia like a water temperature of 28-30°C (82-86°F) and you live in a climate where it gets cold in winter. Using good [[Greenhouses|greenhouse design]], you are able to stabilize the temperature year-round, but there&#039;s no way you&#039;ll get it up to 28-30° without a heat source. This will require an input of power, in addition to the power needed for the pump. &lt;br /&gt;
&lt;br /&gt;
There could be a way to kill two birds with one stone: build a [[thermophilic compost]] heap against one side of the fish tank. The heat from the compost will warm the water up. Care must be taken to keep the temperature of the greenhouse stable, as the pile can get up to 50°C (122°F). Secondly, for the pump you keep a [[Stirling Engine with Hydraulic Transmission|stirling engine]] at the compost heap. This is driven by the heat of the composting and is hydraulically connected to the water pump. Just an idea...&lt;br /&gt;
&lt;br /&gt;
==Resources==&lt;br /&gt;
* [http://www.fastonline.org/content/category/4/15/29/ Aquaponics info at F.A.S.T.]&lt;br /&gt;
* [http://www.backyardaquaponics.com Backyard Aquaponics] - Includes a thriving [http://www.backyardaquaponics.com/forum/ forum]&lt;br /&gt;
* [http://www.growingpower.org/ Growing Power] - a non-profit dedicated to educating people about growing food&lt;br /&gt;
* [http://www.friendlyaquaponics.com/ Friendly Aquaponics] - contains plans for systems&lt;br /&gt;
* [http://www.aquaponicsjournal.com/articles.php Aquaponics Journal articles]&lt;br /&gt;
* [http://en.wikipedia.org/wiki/Aquaponics#Further_reading Wikipedia aquaponics article] - Further Reading section&lt;br /&gt;
* [https://www.aquaponics.com/aquaponics/aquaponicsoverview.php &#039;&#039;Aquaponics Information&#039;&#039; at aquaponics.com]&lt;br /&gt;
* [[appropedia:Aquaponics|Aquaponics on Appropedia]]&lt;br /&gt;
* [http://www.windward.org/ Windward] - a self-sufficient community that uses aquaponics. They have an informative website.&lt;br /&gt;
* [http://socalfishfarm.com/fish/ SoCal Fish Farm] - a commercial aquaponics operation. Their website has good information on tilapia, shrimp, aquaponics and [[Greenhouses|solar greenhouses]]&lt;br /&gt;
* [http://passionforproduce.net/ Passion For Produce] - backyard aquaponics garden in Sarasota, FL&lt;br /&gt;
* [http://www.aquaponics-shop.com Aquaponics Shop] - Australia dedicated aquaponics shop with commercial assistance and research&lt;br /&gt;
* [http://aquaponics-plans.allecofriendly.info Aquaponics Plans] - An enthusiast&#039;s blog about her personal experience with aquaponics and aquaponics plans.&lt;br /&gt;
&lt;br /&gt;
* [http://aquaponicsideasonline.com Aquaponics System] - An aquaponics enthusiast&#039;s website providing ideas and advice for setting aquaponics gardens.&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Databases_of_Plants&amp;diff=113667</id>
		<title>Databases of Plants</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Databases_of_Plants&amp;diff=113667"/>
		<updated>2014-01-18T03:26:01Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&lt;br /&gt;
The following are useful databases of plants sourced from permaculture consultant [[Eric Toensmeier]]&#039;s site: http://www.perennialsolutions.org&lt;br /&gt;
&lt;br /&gt;
http://www.worldagroforestry.org/sea/Products/AFDbases/af/asp/BotanicSearch.asp&lt;br /&gt;
&lt;br /&gt;
http://www.apiosinstitute.org/&lt;br /&gt;
&lt;br /&gt;
http://bc.rvtc.us/&lt;br /&gt;
&lt;br /&gt;
http://www.ansci.cornell.edu/plants/index.html&lt;br /&gt;
&lt;br /&gt;
http://www.fs.fed.us/database/feis/plants/&lt;br /&gt;
&lt;br /&gt;
http://www.wildflower.org/plants/&lt;br /&gt;
&lt;br /&gt;
http://www.foodplantsinternational.com/ ...is issued under a cc license&lt;br /&gt;
&lt;br /&gt;
http://www.theplantlist.org/&lt;br /&gt;
&lt;br /&gt;
http://www.prota.org/&lt;br /&gt;
&lt;br /&gt;
http://www.pfaf.org/&lt;br /&gt;
&lt;br /&gt;
http://www.rbgkew.org.uk/ceb/sepasal/&lt;br /&gt;
&lt;br /&gt;
http://www.tropicalforages.info/index.htm&lt;br /&gt;
&lt;br /&gt;
http://plants.usda.gov/java/&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Databases_of_Plants&amp;diff=113666</id>
		<title>Databases of Plants</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Databases_of_Plants&amp;diff=113666"/>
		<updated>2014-01-18T03:23:03Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: Created page with &amp;quot; The following are useful databases of plants sourced from permaculture consultant Eric Toensmeier&amp;#039;s site: http://www.perennialsolutions.org  http://www.worldagroforestry....&amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&lt;br /&gt;
The following are useful databases of plants sourced from permaculture consultant [[Eric Toensmeier]]&#039;s site: http://www.perennialsolutions.org&lt;br /&gt;
&lt;br /&gt;
http://www.worldagroforestry.org/sea/Products/AFDbases/af/asp/BotanicSearch.asp&lt;br /&gt;
&lt;br /&gt;
http://www.apiosinstitute.org/&lt;br /&gt;
&lt;br /&gt;
http://bc.rvtc.us/&lt;br /&gt;
&lt;br /&gt;
http://www.ansci.cornell.edu/plants/index.html&lt;br /&gt;
&lt;br /&gt;
http://www.fs.fed.us/database/feis/plants/&lt;br /&gt;
&lt;br /&gt;
http://www.wildflower.org/plants/&lt;br /&gt;
&lt;br /&gt;
http://www.foodplantsinternational.com/&lt;br /&gt;
&lt;br /&gt;
http://www.theplantlist.org/&lt;br /&gt;
&lt;br /&gt;
http://www.prota.org/&lt;br /&gt;
&lt;br /&gt;
http://www.pfaf.org/&lt;br /&gt;
&lt;br /&gt;
http://www.rbgkew.org.uk/ceb/sepasal/&lt;br /&gt;
&lt;br /&gt;
http://www.tropicalforages.info/index.htm&lt;br /&gt;
&lt;br /&gt;
http://plants.usda.gov/java/&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=FarmHack&amp;diff=113549</id>
		<title>FarmHack</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=FarmHack&amp;diff=113549"/>
		<updated>2014-01-15T04:29:03Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: Redirected page to Farmhack&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;#REDIRECT [[Farmhack]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=FarmHack&amp;diff=113548</id>
		<title>FarmHack</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=FarmHack&amp;diff=113548"/>
		<updated>2014-01-15T04:28:01Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;#REDIRECT Farmhack&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Farmhack&amp;diff=113547</id>
		<title>Farmhack</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Farmhack&amp;diff=113547"/>
		<updated>2014-01-15T04:25:29Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[http://www.farmhack.net Farm Hack] is an organization offshoot from the [[Greenhorns]].&lt;br /&gt;
==Introduction==&lt;br /&gt;
*Farm Hack is an Open Source community for resilient agriculture and innovation in farming tools and methods.&lt;br /&gt;
*Registration is required to view projects&lt;br /&gt;
&lt;br /&gt;
==Projects and Prototypes==&lt;br /&gt;
Recent projects as of January 2014 include (not all inclusive)&lt;br /&gt;
*http://farmhack.net/tools/home-built-no-till-seed-drill&lt;br /&gt;
*http://farmhack.net/tools/low-cost-row-crop-header&lt;br /&gt;
*http://farmhack.net/tools/triangle-quick-attach-3-point-hitch&lt;br /&gt;
*http://farmhack.net/tools/mobile-chicken-coop&lt;br /&gt;
*http://farmhack.net/tools/black-soldier-fly-feed-alternative-aquaculture&lt;br /&gt;
*http://farmhack.net/tools/record-keeping-profitability-analysis-tool&lt;br /&gt;
*http://farmhack.net/tools/10-diy-mineral-feeder&lt;br /&gt;
*http://farmhack.net/tools/enterprise-budgets-lists-downloads&lt;br /&gt;
*http://farmhack.net/tools/%E2%80%9Cbed-weeder%E2%80%9D-roxbury-farm-ny&lt;br /&gt;
*http://farmhack.net/tools/vacuum-material-handler&lt;br /&gt;
*http://farmhack.net/tools/farmer-owned-distribution-network&lt;br /&gt;
*http://farmhack.net/tools/mobile-distillery&lt;br /&gt;
*http://farmhack.net/tools/orchard-bird-scare-machines&lt;br /&gt;
*http://farmhack.net/tools/passive-water-pump&lt;br /&gt;
*http://farmhack.net/tools/water-filter-biochar-generation-system&lt;br /&gt;
*http://farmhack.net/tools/multi-barrier-nano-water-treatment-system&lt;br /&gt;
*http://farmhack.net/tools/refrigerated-box-truck&lt;br /&gt;
*http://farmhack.net/tools/sailing-cargo-barge&lt;br /&gt;
*http://farmhack.net/tools/drought-resiliance-small-scale-farm&lt;br /&gt;
*http://farmhack.net/tools/food-solutions-new-england&lt;br /&gt;
*http://farmhack.net/tools/small-axial-flow-combine-harvester&lt;br /&gt;
*http://farmhack.net/tools/pick-carrot-seed-search-website&lt;br /&gt;
*http://farmhack.net/tools/cultivars-raincloud&lt;br /&gt;
*http://farmhack.net/tools/shipping-container-post-harvest-shedcommercial-kitchen&lt;br /&gt;
*http://farmhack.net/tools/ifarm-imaging-agricultural-research-and-management&lt;br /&gt;
*http://farmhack.net/tools/low-cost-pedalpower-rootwasher&lt;br /&gt;
*http://farmhack.net/tools/skidsteer-quick-attach-standards-sae-j2513&lt;br /&gt;
*http://farmhack.net/tools/ground-driven-pto-forecart-converted-antique-tractor&lt;br /&gt;
*http://farmhack.net/tools/commercial-scale-rocket-oven&lt;br /&gt;
*http://farmhack.net/content/oat-dehuller-model-sr-50&lt;br /&gt;
*http://farmhack.net/tools/resource-list-useful-apps-farmers&lt;br /&gt;
*http://farmhack.net/tools/fish-tank-air-pump-herb-propagator&lt;br /&gt;
*http://farmhack.net/tools/oilseed-oil-meal-and-biodiesel-cost-calculator&lt;br /&gt;
&lt;br /&gt;
[[Category:Food and Agriculture]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=PVC&amp;diff=113476</id>
		<title>PVC</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=PVC&amp;diff=113476"/>
		<updated>2014-01-13T05:15:17Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Plans and Design Ideas */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;==Introduction==&lt;br /&gt;
A very useful construction material...&lt;br /&gt;
*[http://www.formufit.com/what-is-pvc-pipe PVC 101]&lt;br /&gt;
==How-To Manuals==&lt;br /&gt;
*[http://www.formufit.com/guides PVC Field Manuals] freely sourced by FORMUFIT for cutting, cleaning, assembling, bending, sizing.&lt;br /&gt;
&lt;br /&gt;
==Plans and Design Ideas==&lt;br /&gt;
*http://www.formufit.com/free-pvc-projects-plans/ &lt;br /&gt;
&#039;&#039;...of note, this company will offer store credit for creations submitted to their free online library.  In addition, they have Sketchup creations that could be of use to your Factor e Farm.  Perhaps an informal partnership with OSE could help you source much needed materials?&#039;&#039;&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=PVC&amp;diff=113475</id>
		<title>PVC</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=PVC&amp;diff=113475"/>
		<updated>2014-01-13T05:08:41Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: Created page with &amp;quot;==Introduction== A very useful construction material... *[http://www.formufit.com/what-is-pvc-pipe PVC 101] ==How-To Manuals== *[http://www.formufit.com/guides PVC Field Manua...&amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;==Introduction==&lt;br /&gt;
A very useful construction material...&lt;br /&gt;
*[http://www.formufit.com/what-is-pvc-pipe PVC 101]&lt;br /&gt;
==How-To Manuals==&lt;br /&gt;
*[http://www.formufit.com/guides PVC Field Manuals] freely sourced by FORMUFIT for cutting, cleaning, assembling, bending, sizing.&lt;br /&gt;
&lt;br /&gt;
==Plans and Design Ideas==&lt;br /&gt;
*http://www.formufit.com/free-pvc-projects-plans/&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Farmhack&amp;diff=113400</id>
		<title>Farmhack</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Farmhack&amp;diff=113400"/>
		<updated>2014-01-03T03:08:23Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[http://www.farmhack.net Farm Hack] is an organization offshoot from the [[Greenhorns]].&lt;br /&gt;
==Introduction==&lt;br /&gt;
*Farm Hack is an Open Source community for resilient agriculture and innovation in farming tools and methods.&lt;br /&gt;
*Registration is required to view projects&lt;br /&gt;
&lt;br /&gt;
==Projects and Prototypes==&lt;br /&gt;
Recent projects as of January 2014 include (not all inclusive)&lt;br /&gt;
*http://farmhack.net/tools/home-built-no-till-seed-drill&lt;br /&gt;
*http://farmhack.net/tools/low-cost-row-crop-header&lt;br /&gt;
*http://farmhack.net/tools/triangle-quick-attach-3-point-hitch&lt;br /&gt;
*http://farmhack.net/tools/mobile-chicken-coop&lt;br /&gt;
*http://farmhack.net/tools/black-soldier-fly-feed-alternative-aquaculture&lt;br /&gt;
*http://farmhack.net/tools/record-keeping-profitability-analysis-tool&lt;br /&gt;
*http://farmhack.net/tools/10-diy-mineral-feeder&lt;br /&gt;
*http://farmhack.net/tools/enterprise-budgets-lists-downloads&lt;br /&gt;
*http://farmhack.net/tools/%E2%80%9Cbed-weeder%E2%80%9D-roxbury-farm-ny&lt;br /&gt;
*http://farmhack.net/tools/vacuum-material-handler&lt;br /&gt;
*http://farmhack.net/tools/farmer-owned-distribution-network&lt;br /&gt;
*http://farmhack.net/tools/mobile-distillery&lt;br /&gt;
*http://farmhack.net/tools/orchard-bird-scare-machines&lt;br /&gt;
*http://farmhack.net/tools/passive-water-pump&lt;br /&gt;
*http://farmhack.net/tools/water-filter-biochar-generation-system&lt;br /&gt;
*http://farmhack.net/tools/multi-barrier-nano-water-treatment-system&lt;br /&gt;
*http://farmhack.net/tools/refrigerated-box-truck&lt;br /&gt;
*http://farmhack.net/tools/sailing-cargo-barge&lt;br /&gt;
*http://farmhack.net/tools/drought-resiliance-small-scale-farm&lt;br /&gt;
*http://farmhack.net/tools/food-solutions-new-england&lt;br /&gt;
*http://farmhack.net/tools/small-axial-flow-combine-harvester&lt;br /&gt;
*http://farmhack.net/tools/pick-carrot-seed-search-website&lt;br /&gt;
*http://farmhack.net/tools/cultivars-raincloud&lt;br /&gt;
*http://farmhack.net/tools/shipping-container-post-harvest-shedcommercial-kitchen&lt;br /&gt;
*http://farmhack.net/tools/ifarm-imaging-agricultural-research-and-management&lt;br /&gt;
*http://farmhack.net/tools/low-cost-pedalpower-rootwasher&lt;br /&gt;
*http://farmhack.net/tools/skidsteer-quick-attach-standards-sae-j2513&lt;br /&gt;
*http://farmhack.net/tools/ground-driven-pto-forecart-converted-antique-tractor&lt;br /&gt;
*http://farmhack.net/tools/commercial-scale-rocket-oven&lt;br /&gt;
*http://farmhack.net/content/oat-dehuller-model-sr-50&lt;br /&gt;
*http://farmhack.net/tools/resource-list-useful-apps-farmers&lt;br /&gt;
*http://farmhack.net/tools/fish-tank-air-pump-herb-propagator&lt;br /&gt;
*http://farmhack.net/tools/oilseed-oil-meal-and-biodiesel-cost-calculator&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Greenhorns&amp;diff=113397</id>
		<title>Greenhorns</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Greenhorns&amp;diff=113397"/>
		<updated>2014-01-02T22:32:31Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&lt;br /&gt;
Organization to promote, recruit, and support new farmers in America.  &amp;quot;Greenhorns&amp;quot; are those new to farming.&lt;br /&gt;
*http://www.thegreenhorns.net/&lt;br /&gt;
*[[Farmhack]]&lt;br /&gt;
*[http://www.thegreenhorns.net/wp-content/files_mf/1335220206GH_landtenureworkshop_minicompendium.pdf Land. Liberty. Sunshine. Stamina.] a CC licensed mini resource for beginning farmers on the topic of finding sustainable land tenure&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Lead_Acid_batteries&amp;diff=113392</id>
		<title>Lead Acid batteries</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Lead_Acid_batteries&amp;diff=113392"/>
		<updated>2014-01-02T21:57:49Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{delete}}&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
This page explores the principles of lead acid batteries and how we might begin to construct them.&lt;br /&gt;
&lt;br /&gt;
http://windpower.org.za/batteries/batteries.html&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Discussion on homebrew alternatives to the sulphuric acid battery. http://www.fieldlines.com/story/2007/2/2/04022/62428&lt;br /&gt;
[[Category:Battery]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Lead_Acid_batteries&amp;diff=113391</id>
		<title>Lead Acid batteries</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Lead_Acid_batteries&amp;diff=113391"/>
		<updated>2014-01-02T21:57:07Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{delete}}&lt;br /&gt;
{{Category=Energy}}&lt;br /&gt;
&lt;br /&gt;
This page explores the principles of lead acid batteries and how we might begin to construct them.&lt;br /&gt;
&lt;br /&gt;
http://windpower.org.za/batteries/batteries.html&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Discussion on homebrew alternatives to the sulphuric acid battery. http://www.fieldlines.com/story/2007/2/2/04022/62428&lt;br /&gt;
[[Category:Battery]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Lead-Acid_Battery_Treatment&amp;diff=113390</id>
		<title>Lead-Acid Battery Treatment</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Lead-Acid_Battery_Treatment&amp;diff=113390"/>
		<updated>2014-01-02T21:56:37Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&lt;br /&gt;
&lt;br /&gt;
Email form Craig Carmichael:&lt;br /&gt;
&lt;br /&gt;
---&lt;br /&gt;
&lt;br /&gt;
Hi,&lt;br /&gt;
&lt;br /&gt;
I&#039;ve been experimenting with adding sodium sulfate salt to extend the &lt;br /&gt;
life of lead-acid batteries for a few months now, and to restore &lt;br /&gt;
&amp;quot;worn out&amp;quot; batteries. It seems battery life is probably extended by 3 &lt;br /&gt;
to 5 times. I&#039;ve worked out how much to add, and have a page of &lt;br /&gt;
instructions on the web (which now needs updating):&lt;br /&gt;
&lt;br /&gt;
http://www.TurquoiseEnergy.com/Na2SO4.html&lt;br /&gt;
&lt;br /&gt;
(I have it packaged in little kits for sale, but you can also &lt;br /&gt;
probably find sodium sulfate locally if you&#039;re not in Victoria BC.)&lt;br /&gt;
&lt;br /&gt;
- For new(ish) batteries, just add the sodium sulfate.&lt;br /&gt;
- For renewing a supposedly &amp;quot;worn out&amp;quot; battery, dump the acid and &lt;br /&gt;
crud and refill with distilled water with the salt dissolved in it. &lt;br /&gt;
Then it needs to be cycled - charged and discharged - a number of &lt;br /&gt;
times to finish the restoration.&lt;br /&gt;
&lt;br /&gt;
I was having a hard time understanding why one would dump out the &lt;br /&gt;
acid. I finally figured it out: For electrochemical reasons, if you &lt;br /&gt;
put in straight sulfate salt, the sodium ions will pull sulfate off &lt;br /&gt;
the sulfated electrode plates until the pH drops to 1 (acid). This &lt;br /&gt;
desulfates the plates, and it gets them a little better each time the &lt;br /&gt;
charge is low.&lt;br /&gt;
&lt;br /&gt;
I note that the battery companies are starting to sell a lot of &lt;br /&gt;
&amp;quot;sealed&amp;quot; batteries with the tops glued on. It&#039;s easy to drill 1/2&amp;quot; &lt;br /&gt;
holes in the &amp;quot;fixed&amp;quot; side of the top to gain access (fill using a &lt;br /&gt;
small funnel), and plug them firmly with rubber stoppers like #00 &lt;br /&gt;
test tube stoppers. (Wear eye protection - &amp;quot;blindness is forever&amp;quot;, &lt;br /&gt;
and I actually met a blinded chem. prof. last year - I didn&#039;t ask &lt;br /&gt;
what from.)&lt;br /&gt;
&lt;br /&gt;
There&#039;s a few good stories about this in my recent newsletters:&lt;br /&gt;
http://www.TurquoiseEnergy.com/TENewslettersIndex.html&lt;br /&gt;
&lt;br /&gt;
Long life lead-acid batteries are of course much better for electric &lt;br /&gt;
transport (and even for your gas car&#039;s battery) than short lived ones.&lt;br /&gt;
&lt;br /&gt;
Cheers,&lt;br /&gt;
Craig&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
*[[Battery]]&lt;br /&gt;
*[[Lead Acid Battery]]&lt;br /&gt;
&lt;br /&gt;
[[Category:Battery]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Lead-Acid_Battery_Treatment&amp;diff=113389</id>
		<title>Lead-Acid Battery Treatment</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Lead-Acid_Battery_Treatment&amp;diff=113389"/>
		<updated>2014-01-02T21:56:04Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Category=Energy}}&lt;br /&gt;
&lt;br /&gt;
Email form Craig Carmichael:&lt;br /&gt;
&lt;br /&gt;
---&lt;br /&gt;
&lt;br /&gt;
Hi,&lt;br /&gt;
&lt;br /&gt;
I&#039;ve been experimenting with adding sodium sulfate salt to extend the &lt;br /&gt;
life of lead-acid batteries for a few months now, and to restore &lt;br /&gt;
&amp;quot;worn out&amp;quot; batteries. It seems battery life is probably extended by 3 &lt;br /&gt;
to 5 times. I&#039;ve worked out how much to add, and have a page of &lt;br /&gt;
instructions on the web (which now needs updating):&lt;br /&gt;
&lt;br /&gt;
http://www.TurquoiseEnergy.com/Na2SO4.html&lt;br /&gt;
&lt;br /&gt;
(I have it packaged in little kits for sale, but you can also &lt;br /&gt;
probably find sodium sulfate locally if you&#039;re not in Victoria BC.)&lt;br /&gt;
&lt;br /&gt;
- For new(ish) batteries, just add the sodium sulfate.&lt;br /&gt;
- For renewing a supposedly &amp;quot;worn out&amp;quot; battery, dump the acid and &lt;br /&gt;
crud and refill with distilled water with the salt dissolved in it. &lt;br /&gt;
Then it needs to be cycled - charged and discharged - a number of &lt;br /&gt;
times to finish the restoration.&lt;br /&gt;
&lt;br /&gt;
I was having a hard time understanding why one would dump out the &lt;br /&gt;
acid. I finally figured it out: For electrochemical reasons, if you &lt;br /&gt;
put in straight sulfate salt, the sodium ions will pull sulfate off &lt;br /&gt;
the sulfated electrode plates until the pH drops to 1 (acid). This &lt;br /&gt;
desulfates the plates, and it gets them a little better each time the &lt;br /&gt;
charge is low.&lt;br /&gt;
&lt;br /&gt;
I note that the battery companies are starting to sell a lot of &lt;br /&gt;
&amp;quot;sealed&amp;quot; batteries with the tops glued on. It&#039;s easy to drill 1/2&amp;quot; &lt;br /&gt;
holes in the &amp;quot;fixed&amp;quot; side of the top to gain access (fill using a &lt;br /&gt;
small funnel), and plug them firmly with rubber stoppers like #00 &lt;br /&gt;
test tube stoppers. (Wear eye protection - &amp;quot;blindness is forever&amp;quot;, &lt;br /&gt;
and I actually met a blinded chem. prof. last year - I didn&#039;t ask &lt;br /&gt;
what from.)&lt;br /&gt;
&lt;br /&gt;
There&#039;s a few good stories about this in my recent newsletters:&lt;br /&gt;
http://www.TurquoiseEnergy.com/TENewslettersIndex.html&lt;br /&gt;
&lt;br /&gt;
Long life lead-acid batteries are of course much better for electric &lt;br /&gt;
transport (and even for your gas car&#039;s battery) than short lived ones.&lt;br /&gt;
&lt;br /&gt;
Cheers,&lt;br /&gt;
Craig&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
*[[Battery]]&lt;br /&gt;
*[[Lead Acid Battery]]&lt;br /&gt;
&lt;br /&gt;
[[Category:Battery]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Lead_Acid_Battery&amp;diff=113388</id>
		<title>Lead Acid Battery</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Lead_Acid_Battery&amp;diff=113388"/>
		<updated>2014-01-02T21:51:57Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;==Overview==&lt;br /&gt;
Lead–acid batteries, invented in 1859 by French physicist Gaston Planté, are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, their ability to supply high surge currents means that the cells maintain a relatively large power-to-weight ratio. These features, along with their low cost, make them attractive for use in motor vehicles to provide the high current required by automobile starter motors.&lt;br /&gt;
&lt;br /&gt;
==Care and maintenance==&lt;br /&gt;
Lead-acid batteries are a relatively fragile system component. Without diligent care and maintenance, they will become a significant expense. It is important to understand the mechanisms of failure and damage so they can be avoided.&lt;br /&gt;
&lt;br /&gt;
===Sulfation and desulfation===&lt;br /&gt;
It is estimated that 80% of all lead-acid batteries are prematurely discarded because of sulfation &amp;lt;ref&amp;gt;[http://www.magnalabs.com/sulfation1.htm] Battery Plate Sulfation For Us Dummies&amp;lt;/ref&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
=====Sulfation=====&lt;br /&gt;
Sulfation occurs during normal battery operation. When the battery is working properly, a thin layer of sulfate forms on the battery plates during discharge, and dissolves back into the battery acid during charging&amp;lt;ref&amp;gt;[http://www.progressivedyn.com/battery_basics.html] Battery basics&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;[http://home.comcast.net/~ddenhardt201263/desulfator/technotes.htm] Some Technical Details on Lead Acid Batteries: The Chemistry of Sulfation, and Why Pulsing Helps&amp;lt;/ref&amp;gt;. Problems from sulfation occur when the sulfate forms a hard crystalline shell that isn&#039;t dissolved during charging. Over time, the sulfate crystals grow to cover most of the surface area of the lead plates, reducing capacity. Eventually, the sulfate crystals expand and crack the plates, destroying the battery.&lt;br /&gt;
&lt;br /&gt;
Before complete sulfation occurs, the battery becomes less efficient and is able to hold less charge. The capacity of the battery is reduced to a non-useful level, and the battery is discarded before it is mechanically destroyed.&lt;br /&gt;
&lt;br /&gt;
=====Causes of sulfation=====&lt;br /&gt;
When batteries do not get a strong enough charging current to dissolve the sulfate frequently enough, sulfation problems can occur. This is primarily a problem in batteries which sit unused for long periods of time. RVs, farm equipment, or a battery left in storage can have this issue.&lt;br /&gt;
&lt;br /&gt;
Another cause of sulfation which may not be obvious is an over-sized battery or battery bank. In this situation the charging current isn&#039;t strong enough to fully dissolve the sulfate during the charge cycle. An example here could be an off-grid solar system.&lt;br /&gt;
&lt;br /&gt;
Sulfation will occur especially quickly if the battery is not fully charged for an extended period of time. Higher temperatures will also increase the speed of the sulfation reaction.&lt;br /&gt;
&lt;br /&gt;
=====Common behaviors which can cause sulfation=====&lt;br /&gt;
Here is a list with some common things that can cause sulfation&amp;lt;ref&amp;gt;[http://www.batterystuff.com/kb/articles/battery-articles/battery-basics.html] Battery Basics: A Layman&#039;s Guide to Batteries&amp;lt;/ref&amp;gt;:&lt;br /&gt;
*Batteries sit too long between charges. As little as 24 hours in hot weather and several days in cooler weather.&lt;br /&gt;
*Battery is stored without some type of energy input.&lt;br /&gt;
*&amp;quot;Deep cycling&amp;quot; an engine starting battery. Remember these batteries can&#039;t stand deep discharge.&lt;br /&gt;
*Undercharging of a battery to only 90% of capacity will allow sulfation of the battery using the 10% of battery chemistry not reactivated by the incompleted charging cycle.&lt;br /&gt;
*Heat of 100 plus F., increases internal discharge. As temperatures increase so does internal discharge. A new fully charged battery left sitting 24 hours a day at 110 degrees F for 30 days would most likely not start an engine.&lt;br /&gt;
*Low electrolyte level - battery plates exposed to air will immediately sulfate.&lt;br /&gt;
*Incorrect charging levels and settings. Most cheap battery chargers can do more harm than good. See the section on battery charging.&lt;br /&gt;
*Cold weather is also hard on the battery. The chemistry does not make the same amount of energy as a warm battery. A deeply discharged battery can freeze solid in sub zero weather.&lt;br /&gt;
*Parasitic drain is a load put on a battery with the key off. More info on parasitic drain will follow in this document.&lt;br /&gt;
&lt;br /&gt;
=====Desulfation=====&lt;br /&gt;
Battery desulfation is a relatively modern development within the last few decades. Previously the only way to remove sulfation buildup was essentially over-charging the battery, called &#039;&#039;equalization&#039;&#039;. This method is still used by some battery chargers. However, this practice shortens the battery life. &amp;lt;ref&amp;gt;[http://www.evdl.org/pages/hartcharge.html] Lee Hart&#039;s Battery Charging Basics&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;[http://home.comcast.net/~ddenhardt201263/desulfator/technotes.htm] Some Technical Details on Lead Acid Batteries: The Chemistry of Sulfation, and Why Pulsing Helps&amp;lt;/ref&amp;gt; Another option has been chemicals which dissolve the sulfate.&lt;br /&gt;
&lt;br /&gt;
In the summer of 2000 a circuit for a desulfator was published in Home Power magazine.&amp;lt;ref&amp;gt;[http://alton-moore.net/graphics/desulfator.pdf] Lead-Acid&lt;br /&gt;
Battery Desulfator - Alastair Couper (page 84 of HP77)&amp;lt;/ref&amp;gt; The article describes pulsing the battery at it&#039;s resonant frequency, which is anywhere between 2 - 6 MHz.&lt;br /&gt;
&lt;br /&gt;
Using pulses to remove sulfate is called &#039;&#039;pulse conditioning&#039;&#039;. These can be simply current pulses or there can be a frequency component as described by Alastair. Certain patents may prevent all desulfators from using the same method.&lt;br /&gt;
&lt;br /&gt;
=====Pulse conditioning products=====&lt;br /&gt;
It appears that BatteryMINDer was one of the first companies to produce a pulse conditioning desulfator and they have &amp;quot;patented frequency sweep technology&amp;quot; which may be suprior to some other products.&amp;lt;ref&amp;gt;[http://www.amazon.com/review/R3DKMR2AFRR9UJ/ref=cm_cr_dp_title?ie=UTF8&amp;amp;ASIN=B004FVA2EE&amp;amp;nodeID=15684181&amp;amp;store=automotive] Amazon review of a batteryminder product&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Research/Construction==&lt;br /&gt;
*[http://wiki.diyfaq.org.uk/index.php?title=Lead_acid_battery_construction Lead Acid Battery Construction]&lt;br /&gt;
*http://windpower.org.za/batteries/batteries.html explores the principles of lead acid batteries and how to possibly construct them.&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
{{Reflist|2}}&lt;br /&gt;
*[[Battery]]&lt;br /&gt;
*[[Batteries]]&lt;br /&gt;
*[[Lead-Acid Battery Treatment]]&lt;br /&gt;
*[http://en.wikipedia.org/wiki/Lead_acid Wikipedia:Lead–acid battery]&lt;br /&gt;
**[https://en.wikipedia.org/wiki/Lead%E2%80%93acid_battery#Sulfation_and_desulfation] Wikipedia entry on lead-acid battery sulfation and desulfation&lt;br /&gt;
[[Category:Battery]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Lead_Acid_batteries&amp;diff=113387</id>
		<title>Lead Acid batteries</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Lead_Acid_batteries&amp;diff=113387"/>
		<updated>2014-01-02T21:49:54Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: Moved only good link to Lead Acid Battery page.  Recommend deleting page to consolidate.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{delete}}&lt;br /&gt;
{{Category=Energy}}&lt;br /&gt;
&lt;br /&gt;
This page explores the principles of lead acid batteries and how we might begin to construct them.&lt;br /&gt;
&lt;br /&gt;
http://windpower.org.za/batteries/batteries.html&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Discussion on homebrew alternatives to the sulphuric acid battery. http://www.fieldlines.com/story/2007/2/2/04022/62428&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Lead_Acid_Battery&amp;diff=113386</id>
		<title>Lead Acid Battery</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Lead_Acid_Battery&amp;diff=113386"/>
		<updated>2014-01-02T21:48:42Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Research */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;==Overview==&lt;br /&gt;
Lead–acid batteries, invented in 1859 by French physicist Gaston Planté, are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, their ability to supply high surge currents means that the cells maintain a relatively large power-to-weight ratio. These features, along with their low cost, make them attractive for use in motor vehicles to provide the high current required by automobile starter motors.&lt;br /&gt;
&lt;br /&gt;
==Care and maintenance==&lt;br /&gt;
Lead-acid batteries are a relatively fragile system component. Without diligent care and maintenance, they will become a significant expense. It is important to understand the mechanisms of failure and damage so they can be avoided.&lt;br /&gt;
&lt;br /&gt;
===Sulfation and desulfation===&lt;br /&gt;
It is estimated that 80% of all lead-acid batteries are prematurely discarded because of sulfation &amp;lt;ref&amp;gt;[http://www.magnalabs.com/sulfation1.htm] Battery Plate Sulfation For Us Dummies&amp;lt;/ref&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
=====Sulfation=====&lt;br /&gt;
Sulfation occurs during normal battery operation. When the battery is working properly, a thin layer of sulfate forms on the battery plates during discharge, and dissolves back into the battery acid during charging&amp;lt;ref&amp;gt;[http://www.progressivedyn.com/battery_basics.html] Battery basics&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;[http://home.comcast.net/~ddenhardt201263/desulfator/technotes.htm] Some Technical Details on Lead Acid Batteries: The Chemistry of Sulfation, and Why Pulsing Helps&amp;lt;/ref&amp;gt;. Problems from sulfation occur when the sulfate forms a hard crystalline shell that isn&#039;t dissolved during charging. Over time, the sulfate crystals grow to cover most of the surface area of the lead plates, reducing capacity. Eventually, the sulfate crystals expand and crack the plates, destroying the battery.&lt;br /&gt;
&lt;br /&gt;
Before complete sulfation occurs, the battery becomes less efficient and is able to hold less charge. The capacity of the battery is reduced to a non-useful level, and the battery is discarded before it is mechanically destroyed.&lt;br /&gt;
&lt;br /&gt;
=====Causes of sulfation=====&lt;br /&gt;
When batteries do not get a strong enough charging current to dissolve the sulfate frequently enough, sulfation problems can occur. This is primarily a problem in batteries which sit unused for long periods of time. RVs, farm equipment, or a battery left in storage can have this issue.&lt;br /&gt;
&lt;br /&gt;
Another cause of sulfation which may not be obvious is an over-sized battery or battery bank. In this situation the charging current isn&#039;t strong enough to fully dissolve the sulfate during the charge cycle. An example here could be an off-grid solar system.&lt;br /&gt;
&lt;br /&gt;
Sulfation will occur especially quickly if the battery is not fully charged for an extended period of time. Higher temperatures will also increase the speed of the sulfation reaction.&lt;br /&gt;
&lt;br /&gt;
=====Common behaviors which can cause sulfation=====&lt;br /&gt;
Here is a list with some common things that can cause sulfation&amp;lt;ref&amp;gt;[http://www.batterystuff.com/kb/articles/battery-articles/battery-basics.html] Battery Basics: A Layman&#039;s Guide to Batteries&amp;lt;/ref&amp;gt;:&lt;br /&gt;
*Batteries sit too long between charges. As little as 24 hours in hot weather and several days in cooler weather.&lt;br /&gt;
*Battery is stored without some type of energy input.&lt;br /&gt;
*&amp;quot;Deep cycling&amp;quot; an engine starting battery. Remember these batteries can&#039;t stand deep discharge.&lt;br /&gt;
*Undercharging of a battery to only 90% of capacity will allow sulfation of the battery using the 10% of battery chemistry not reactivated by the incompleted charging cycle.&lt;br /&gt;
*Heat of 100 plus F., increases internal discharge. As temperatures increase so does internal discharge. A new fully charged battery left sitting 24 hours a day at 110 degrees F for 30 days would most likely not start an engine.&lt;br /&gt;
*Low electrolyte level - battery plates exposed to air will immediately sulfate.&lt;br /&gt;
*Incorrect charging levels and settings. Most cheap battery chargers can do more harm than good. See the section on battery charging.&lt;br /&gt;
*Cold weather is also hard on the battery. The chemistry does not make the same amount of energy as a warm battery. A deeply discharged battery can freeze solid in sub zero weather.&lt;br /&gt;
*Parasitic drain is a load put on a battery with the key off. More info on parasitic drain will follow in this document.&lt;br /&gt;
&lt;br /&gt;
=====Desulfation=====&lt;br /&gt;
Battery desulfation is a relatively modern development within the last few decades. Previously the only way to remove sulfation buildup was essentially over-charging the battery, called &#039;&#039;equalization&#039;&#039;. This method is still used by some battery chargers. However, this practice shortens the battery life. &amp;lt;ref&amp;gt;[http://www.evdl.org/pages/hartcharge.html] Lee Hart&#039;s Battery Charging Basics&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;[http://home.comcast.net/~ddenhardt201263/desulfator/technotes.htm] Some Technical Details on Lead Acid Batteries: The Chemistry of Sulfation, and Why Pulsing Helps&amp;lt;/ref&amp;gt; Another option has been chemicals which dissolve the sulfate.&lt;br /&gt;
&lt;br /&gt;
In the summer of 2000 a circuit for a desulfator was published in Home Power magazine.&amp;lt;ref&amp;gt;[http://alton-moore.net/graphics/desulfator.pdf] Lead-Acid&lt;br /&gt;
Battery Desulfator - Alastair Couper (page 84 of HP77)&amp;lt;/ref&amp;gt; The article describes pulsing the battery at it&#039;s resonant frequency, which is anywhere between 2 - 6 MHz.&lt;br /&gt;
&lt;br /&gt;
Using pulses to remove sulfate is called &#039;&#039;pulse conditioning&#039;&#039;. These can be simply current pulses or there can be a frequency component as described by Alastair. Certain patents may prevent all desulfators from using the same method.&lt;br /&gt;
&lt;br /&gt;
=====Pulse conditioning products=====&lt;br /&gt;
It appears that BatteryMINDer was one of the first companies to produce a pulse conditioning desulfator and they have &amp;quot;patented frequency sweep technology&amp;quot; which may be suprior to some other products.&amp;lt;ref&amp;gt;[http://www.amazon.com/review/R3DKMR2AFRR9UJ/ref=cm_cr_dp_title?ie=UTF8&amp;amp;ASIN=B004FVA2EE&amp;amp;nodeID=15684181&amp;amp;store=automotive] Amazon review of a batteryminder product&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Research==&lt;br /&gt;
*[http://wiki.diyfaq.org.uk/index.php?title=Lead_acid_battery_construction Lead Acid Battery Construction]&lt;br /&gt;
*http://windpower.org.za/batteries/batteries.html explores the principles of lead acid batteries and how to possibly construct them.&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
{{Reflist|2}}&lt;br /&gt;
*[[Battery]]&lt;br /&gt;
*[[Batteries]]&lt;br /&gt;
*[[Lead-Acid Battery Treatment]]&lt;br /&gt;
*[http://en.wikipedia.org/wiki/Lead_acid Wikipedia:Lead–acid battery]&lt;br /&gt;
**[https://en.wikipedia.org/wiki/Lead%E2%80%93acid_battery#Sulfation_and_desulfation] Wikipedia entry on lead-acid battery sulfation and desulfation&lt;br /&gt;
[[Category:Battery]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Open_Source_Hydroponics_and_Aquaponics&amp;diff=113385</id>
		<title>Open Source Hydroponics and Aquaponics</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Open_Source_Hydroponics_and_Aquaponics&amp;diff=113385"/>
		<updated>2014-01-02T21:37:02Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{delete}}&lt;br /&gt;
{{Category=Controlled-environment growing}}&#039;&#039;&#039;Bold text&#039;&#039;&#039;&lt;br /&gt;
http://www.facebook.com/group.php?gid=126502972267&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Crash_Course_on_Power_Electronics&amp;diff=113384</id>
		<title>Crash Course on Power Electronics</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Crash_Course_on_Power_Electronics&amp;diff=113384"/>
		<updated>2014-01-02T21:01:42Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* See Also */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;For mastering the [[Power Electronics Construction Set]] component of OSE work - step one is an overview tutorial on power electronics. This means basic explanations of multi-purpose controllers and their connection to power-handling elements. This includes:&lt;br /&gt;
&lt;br /&gt;
#How to control current output from any AC or DC input&lt;br /&gt;
#How to control voltage level coming out of any AC or DC input&lt;br /&gt;
#Managing conversion from AC to DC for various purposes.&lt;br /&gt;
&lt;br /&gt;
Explanations should include wiring for stock components, such as PWM signal generators, and corresponding power handling elements.&lt;br /&gt;
&lt;br /&gt;
The above should address full modularity, and scalability. By modularity - we mean plugging in additional units for added power, or added voltage.&lt;br /&gt;
&lt;br /&gt;
The practical tools should also be explained, in terms of open source software for:&lt;br /&gt;
&lt;br /&gt;
#Designing and modifying circuits&lt;br /&gt;
#Generating fabrication files&lt;br /&gt;
#Producing them/getting them produced&lt;br /&gt;
&lt;br /&gt;
Thus, the above should cover conceptual and practical understanding of building, at all scales from watts to 500kW (the scale we deem sufficient on all counts for a full, resilient community):&lt;br /&gt;
&lt;br /&gt;
#[[Inverter]]s&lt;br /&gt;
#[[Converter]]s&lt;br /&gt;
#[[Charge controllers]] for various generators feeding a microgrid: [[Inverters &amp;amp; Grid Intertie]]&lt;br /&gt;
#Inverter welder power supplies&lt;br /&gt;
#Welder power supplies for the [[Open Source Welder]]&lt;br /&gt;
#Plasma cutter power supplies for the [[Plasma Cutter]]&lt;br /&gt;
#Induction furnace power supplies: [[:Category:Induction Furnace]]&lt;br /&gt;
#DC, AC, and stepper motor controllers: [[CNC]] and [[Electric Motor Controls]]&lt;br /&gt;
#Battery chargers&lt;br /&gt;
&lt;br /&gt;
The point is to start with conceptual understanding of an integrated framework for handling applied power electronics, and then moving to particular applications. If presented conceptually, in a modular, open source design fashion - with modules for functionality and for scalability - I don&#039;t see why a non-expert like myself cannot pick up on the material to be very proficient in creating/building real-world applications.&lt;br /&gt;
&lt;br /&gt;
Specifically, here are some examples of the needs of OSE:&lt;br /&gt;
#a low-cost, high-power windmill cannot be designed properly without mastery of power electronics for handling power that fluctuates widely. &lt;br /&gt;
#Mastery of power electronics is essential for building a robust charge controller for a steam engine feeding a microgrid or a battery bank - especially if the steam engine is powered via fluctuating solar concentrator power&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The end point of this is a Crash Course on Power Electronics, in the general framework of our approach to creating resilient communities.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
= Common Types of Power Circuits =&lt;br /&gt;
== Converters ==&lt;br /&gt;
Power converters are the most common type of power electronic circuits.  Converters take electrical power in one form and reshape it into another.   The following table shows the different conversions and the common circuits used.&lt;br /&gt;
&lt;br /&gt;
{|border=&#039;1&#039;&lt;br /&gt;
 !Conversion&lt;br /&gt;
 !Common Circuits&lt;br /&gt;
 !Notes&lt;br /&gt;
 |-&lt;br /&gt;
 |AC to AC&lt;br /&gt;
 |Transformer&lt;br /&gt;
 |Transformers are used when the output frequency is the same as the input frequency.  If the frequency needs to be changed, then a Rectifier-Inverter cascade needs to be used.&lt;br /&gt;
 |-&lt;br /&gt;
 |AC to DC&lt;br /&gt;
 |Rectifier&lt;br /&gt;
 |A rectifier alone will produce an unregulated DC voltage.  Rectifiers are often followed by a DC to DC converter or other voltage regulator.   &lt;br /&gt;
 |-&lt;br /&gt;
 |DC to DC&lt;br /&gt;
 |Switching Mode Converter&lt;br /&gt;
 |There are many ways of converting DC voltage, but Switching power supplies tend to be the most versatile and efficient.&lt;br /&gt;
 |-&lt;br /&gt;
 |DC to AC&lt;br /&gt;
 |Inverter&lt;br /&gt;
 |&lt;br /&gt;
 |}&lt;br /&gt;
&lt;br /&gt;
Efficiency is a key consideration with all converters.  Power lost to inefficiency results in heat.  This means that more expensive parts may be needed, more parts added for cooling systems, and an overall higher stress on the whole unit.  Converter circuits will have a sweet spot where they are most efficient, and then efficiency will roll off as the operating point moves away from that spot.  This can make it difficult to make a single unit that is capable of a wide range of operations.&lt;br /&gt;
&lt;br /&gt;
=== Transformers ===&lt;br /&gt;
Transformers work with AC power.  They have two (or more for multi-phase AC) coils that are inductively coupled.  Electricity flowing through one of them with produce an electricity flow through the other.  By using a different number of turns in the coils, the voltage can be stepped up or down.  Transformers are pretty simple to operate, requiring no external power or controller, and can be quite robust.  However they tend to use a lot metal, making them large and heavy.&lt;br /&gt;
 &lt;br /&gt;
=== Rectifiers ===&lt;br /&gt;
The most useful rectifier is the diode bridge.  It uses four diodes to convert AC power, which is negative half of the time, into all positive power.  The voltage will still vary, however, so it becomes most useful when a capacitor is added to the DC output to smooth the ripples.  The maximum DC voltage that a diode bridge will have is the peak AC voltage minus twice the voltage drop of the diodes.  &lt;br /&gt;
&lt;br /&gt;
=== Switching Mode Converters===&lt;br /&gt;
Switching mode converters use Pulse Width Modulation to controller a transistor.  This means that the transistor is either fully on, or completely off.  Both of these state ideally result in no power loss in the transistor.  Two of the basic examples of this type of converter are the Buck and the Boost.  The Buck converter can convert DC voltages to a lower voltage, while the Boost can convert to higher voltages.  Different configurations of these circuits can be made that combine these two types or adjust them to produce a large range of DC outputs, including outputs that are negative from the inputs. &lt;br /&gt;
&lt;br /&gt;
=== Inverters ===&lt;br /&gt;
Inverters take DC voltage and create a square or sine wave.  They often include a transformer to bring the voltage to the desired output voltage.&lt;br /&gt;
&lt;br /&gt;
== Controllers ==&lt;br /&gt;
Controllers adjust the voltage, current, or total power going to a load.  &lt;br /&gt;
=== Pulse Width Modulation (PWM)===&lt;br /&gt;
Pulse Width Modulation is a method of controlling current to a load by using short bursts of full power of varying duty cycles.  The advantage of PWM is that the controller operates in a fully switch mode, giving very good efficiency, and the load will receive full power during the &#039;on&#039; portions.  PWM can be used in all kinds of applications from controlling the brightness of an LED, to adjusting the speed of an electric motor.&lt;br /&gt;
=== Constant Current / Constant Voltage ===&lt;br /&gt;
Constant Current and Constant Voltage supplies will try to keep the current going through a load, or the voltage across a load, constant even if load changes.  &lt;br /&gt;
== Specialized Devices ==&lt;br /&gt;
There are many specialized devices that perform a combination of functions and monitoring.&lt;br /&gt;
=== Battery Chargers and Monitors ===&lt;br /&gt;
Different types of batteries have generally have different charging profiles so battery chargers need to be designed with a particular battery technology in mind.  Voltage, current, temperature of the battery, and time charging are all factors that need to be taken into account.&lt;br /&gt;
=== Motor Controllers ===&lt;br /&gt;
There are many types of motors, so again, there are many types of controllers.  Some examples of other factors that the controllers may get additional feedback on are RPMs, incremental position, absolute position, or force.&lt;br /&gt;
See [[Electric Motor Controls]] for details.&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
*[[Electronics]]&lt;br /&gt;
*Tutorials&lt;br /&gt;
**[http://en.wikibooks.org/wiki/Electronics Electronics Wikibook]&lt;br /&gt;
**[http://learn.sparkfun.com/tutorials/ Sparkfun Electronics Skills Tutorial] basic skill sets and knowledge from Sparkfun&lt;br /&gt;
**[http://learn.adafruit.com/ Adafruit Learning System] tutorials in [[Arduino]], sensor usage, 3D printing, hackerspace ideas, etc.&lt;br /&gt;
[[Category:Electronics]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Crash_Course_on_Power_Electronics&amp;diff=113383</id>
		<title>Crash Course on Power Electronics</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Crash_Course_on_Power_Electronics&amp;diff=113383"/>
		<updated>2014-01-02T20:56:30Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* See Also */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;For mastering the [[Power Electronics Construction Set]] component of OSE work - step one is an overview tutorial on power electronics. This means basic explanations of multi-purpose controllers and their connection to power-handling elements. This includes:&lt;br /&gt;
&lt;br /&gt;
#How to control current output from any AC or DC input&lt;br /&gt;
#How to control voltage level coming out of any AC or DC input&lt;br /&gt;
#Managing conversion from AC to DC for various purposes.&lt;br /&gt;
&lt;br /&gt;
Explanations should include wiring for stock components, such as PWM signal generators, and corresponding power handling elements.&lt;br /&gt;
&lt;br /&gt;
The above should address full modularity, and scalability. By modularity - we mean plugging in additional units for added power, or added voltage.&lt;br /&gt;
&lt;br /&gt;
The practical tools should also be explained, in terms of open source software for:&lt;br /&gt;
&lt;br /&gt;
#Designing and modifying circuits&lt;br /&gt;
#Generating fabrication files&lt;br /&gt;
#Producing them/getting them produced&lt;br /&gt;
&lt;br /&gt;
Thus, the above should cover conceptual and practical understanding of building, at all scales from watts to 500kW (the scale we deem sufficient on all counts for a full, resilient community):&lt;br /&gt;
&lt;br /&gt;
#[[Inverter]]s&lt;br /&gt;
#[[Converter]]s&lt;br /&gt;
#[[Charge controllers]] for various generators feeding a microgrid: [[Inverters &amp;amp; Grid Intertie]]&lt;br /&gt;
#Inverter welder power supplies&lt;br /&gt;
#Welder power supplies for the [[Open Source Welder]]&lt;br /&gt;
#Plasma cutter power supplies for the [[Plasma Cutter]]&lt;br /&gt;
#Induction furnace power supplies: [[:Category:Induction Furnace]]&lt;br /&gt;
#DC, AC, and stepper motor controllers: [[CNC]] and [[Electric Motor Controls]]&lt;br /&gt;
#Battery chargers&lt;br /&gt;
&lt;br /&gt;
The point is to start with conceptual understanding of an integrated framework for handling applied power electronics, and then moving to particular applications. If presented conceptually, in a modular, open source design fashion - with modules for functionality and for scalability - I don&#039;t see why a non-expert like myself cannot pick up on the material to be very proficient in creating/building real-world applications.&lt;br /&gt;
&lt;br /&gt;
Specifically, here are some examples of the needs of OSE:&lt;br /&gt;
#a low-cost, high-power windmill cannot be designed properly without mastery of power electronics for handling power that fluctuates widely. &lt;br /&gt;
#Mastery of power electronics is essential for building a robust charge controller for a steam engine feeding a microgrid or a battery bank - especially if the steam engine is powered via fluctuating solar concentrator power&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The end point of this is a Crash Course on Power Electronics, in the general framework of our approach to creating resilient communities.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
= Common Types of Power Circuits =&lt;br /&gt;
== Converters ==&lt;br /&gt;
Power converters are the most common type of power electronic circuits.  Converters take electrical power in one form and reshape it into another.   The following table shows the different conversions and the common circuits used.&lt;br /&gt;
&lt;br /&gt;
{|border=&#039;1&#039;&lt;br /&gt;
 !Conversion&lt;br /&gt;
 !Common Circuits&lt;br /&gt;
 !Notes&lt;br /&gt;
 |-&lt;br /&gt;
 |AC to AC&lt;br /&gt;
 |Transformer&lt;br /&gt;
 |Transformers are used when the output frequency is the same as the input frequency.  If the frequency needs to be changed, then a Rectifier-Inverter cascade needs to be used.&lt;br /&gt;
 |-&lt;br /&gt;
 |AC to DC&lt;br /&gt;
 |Rectifier&lt;br /&gt;
 |A rectifier alone will produce an unregulated DC voltage.  Rectifiers are often followed by a DC to DC converter or other voltage regulator.   &lt;br /&gt;
 |-&lt;br /&gt;
 |DC to DC&lt;br /&gt;
 |Switching Mode Converter&lt;br /&gt;
 |There are many ways of converting DC voltage, but Switching power supplies tend to be the most versatile and efficient.&lt;br /&gt;
 |-&lt;br /&gt;
 |DC to AC&lt;br /&gt;
 |Inverter&lt;br /&gt;
 |&lt;br /&gt;
 |}&lt;br /&gt;
&lt;br /&gt;
Efficiency is a key consideration with all converters.  Power lost to inefficiency results in heat.  This means that more expensive parts may be needed, more parts added for cooling systems, and an overall higher stress on the whole unit.  Converter circuits will have a sweet spot where they are most efficient, and then efficiency will roll off as the operating point moves away from that spot.  This can make it difficult to make a single unit that is capable of a wide range of operations.&lt;br /&gt;
&lt;br /&gt;
=== Transformers ===&lt;br /&gt;
Transformers work with AC power.  They have two (or more for multi-phase AC) coils that are inductively coupled.  Electricity flowing through one of them with produce an electricity flow through the other.  By using a different number of turns in the coils, the voltage can be stepped up or down.  Transformers are pretty simple to operate, requiring no external power or controller, and can be quite robust.  However they tend to use a lot metal, making them large and heavy.&lt;br /&gt;
 &lt;br /&gt;
=== Rectifiers ===&lt;br /&gt;
The most useful rectifier is the diode bridge.  It uses four diodes to convert AC power, which is negative half of the time, into all positive power.  The voltage will still vary, however, so it becomes most useful when a capacitor is added to the DC output to smooth the ripples.  The maximum DC voltage that a diode bridge will have is the peak AC voltage minus twice the voltage drop of the diodes.  &lt;br /&gt;
&lt;br /&gt;
=== Switching Mode Converters===&lt;br /&gt;
Switching mode converters use Pulse Width Modulation to controller a transistor.  This means that the transistor is either fully on, or completely off.  Both of these state ideally result in no power loss in the transistor.  Two of the basic examples of this type of converter are the Buck and the Boost.  The Buck converter can convert DC voltages to a lower voltage, while the Boost can convert to higher voltages.  Different configurations of these circuits can be made that combine these two types or adjust them to produce a large range of DC outputs, including outputs that are negative from the inputs. &lt;br /&gt;
&lt;br /&gt;
=== Inverters ===&lt;br /&gt;
Inverters take DC voltage and create a square or sine wave.  They often include a transformer to bring the voltage to the desired output voltage.&lt;br /&gt;
&lt;br /&gt;
== Controllers ==&lt;br /&gt;
Controllers adjust the voltage, current, or total power going to a load.  &lt;br /&gt;
=== Pulse Width Modulation (PWM)===&lt;br /&gt;
Pulse Width Modulation is a method of controlling current to a load by using short bursts of full power of varying duty cycles.  The advantage of PWM is that the controller operates in a fully switch mode, giving very good efficiency, and the load will receive full power during the &#039;on&#039; portions.  PWM can be used in all kinds of applications from controlling the brightness of an LED, to adjusting the speed of an electric motor.&lt;br /&gt;
=== Constant Current / Constant Voltage ===&lt;br /&gt;
Constant Current and Constant Voltage supplies will try to keep the current going through a load, or the voltage across a load, constant even if load changes.  &lt;br /&gt;
== Specialized Devices ==&lt;br /&gt;
There are many specialized devices that perform a combination of functions and monitoring.&lt;br /&gt;
=== Battery Chargers and Monitors ===&lt;br /&gt;
Different types of batteries have generally have different charging profiles so battery chargers need to be designed with a particular battery technology in mind.  Voltage, current, temperature of the battery, and time charging are all factors that need to be taken into account.&lt;br /&gt;
=== Motor Controllers ===&lt;br /&gt;
There are many types of motors, so again, there are many types of controllers.  Some examples of other factors that the controllers may get additional feedback on are RPMs, incremental position, absolute position, or force.&lt;br /&gt;
See [[Electric Motor Controls]] for details.&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
*[[Electronics]]&lt;br /&gt;
*Tutorials&lt;br /&gt;
**[http://learn.sparkfun.com/tutorials/ Sparkfun Electronics Skills Tutorial] basic skill sets and knowledge from Sparkfun&lt;br /&gt;
**[http://learn.adafruit.com/ Adafruit Learning System] tutorials in [[Arduino]], sensor usage, 3D printing, hackerspace ideas, etc.&lt;br /&gt;
[[Category:Electronics]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Crash_Course_on_Power_Electronics&amp;diff=113382</id>
		<title>Crash Course on Power Electronics</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Crash_Course_on_Power_Electronics&amp;diff=113382"/>
		<updated>2014-01-02T20:46:38Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* See Also */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;For mastering the [[Power Electronics Construction Set]] component of OSE work - step one is an overview tutorial on power electronics. This means basic explanations of multi-purpose controllers and their connection to power-handling elements. This includes:&lt;br /&gt;
&lt;br /&gt;
#How to control current output from any AC or DC input&lt;br /&gt;
#How to control voltage level coming out of any AC or DC input&lt;br /&gt;
#Managing conversion from AC to DC for various purposes.&lt;br /&gt;
&lt;br /&gt;
Explanations should include wiring for stock components, such as PWM signal generators, and corresponding power handling elements.&lt;br /&gt;
&lt;br /&gt;
The above should address full modularity, and scalability. By modularity - we mean plugging in additional units for added power, or added voltage.&lt;br /&gt;
&lt;br /&gt;
The practical tools should also be explained, in terms of open source software for:&lt;br /&gt;
&lt;br /&gt;
#Designing and modifying circuits&lt;br /&gt;
#Generating fabrication files&lt;br /&gt;
#Producing them/getting them produced&lt;br /&gt;
&lt;br /&gt;
Thus, the above should cover conceptual and practical understanding of building, at all scales from watts to 500kW (the scale we deem sufficient on all counts for a full, resilient community):&lt;br /&gt;
&lt;br /&gt;
#[[Inverter]]s&lt;br /&gt;
#[[Converter]]s&lt;br /&gt;
#[[Charge controllers]] for various generators feeding a microgrid: [[Inverters &amp;amp; Grid Intertie]]&lt;br /&gt;
#Inverter welder power supplies&lt;br /&gt;
#Welder power supplies for the [[Open Source Welder]]&lt;br /&gt;
#Plasma cutter power supplies for the [[Plasma Cutter]]&lt;br /&gt;
#Induction furnace power supplies: [[:Category:Induction Furnace]]&lt;br /&gt;
#DC, AC, and stepper motor controllers: [[CNC]] and [[Electric Motor Controls]]&lt;br /&gt;
#Battery chargers&lt;br /&gt;
&lt;br /&gt;
The point is to start with conceptual understanding of an integrated framework for handling applied power electronics, and then moving to particular applications. If presented conceptually, in a modular, open source design fashion - with modules for functionality and for scalability - I don&#039;t see why a non-expert like myself cannot pick up on the material to be very proficient in creating/building real-world applications.&lt;br /&gt;
&lt;br /&gt;
Specifically, here are some examples of the needs of OSE:&lt;br /&gt;
#a low-cost, high-power windmill cannot be designed properly without mastery of power electronics for handling power that fluctuates widely. &lt;br /&gt;
#Mastery of power electronics is essential for building a robust charge controller for a steam engine feeding a microgrid or a battery bank - especially if the steam engine is powered via fluctuating solar concentrator power&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The end point of this is a Crash Course on Power Electronics, in the general framework of our approach to creating resilient communities.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
= Common Types of Power Circuits =&lt;br /&gt;
== Converters ==&lt;br /&gt;
Power converters are the most common type of power electronic circuits.  Converters take electrical power in one form and reshape it into another.   The following table shows the different conversions and the common circuits used.&lt;br /&gt;
&lt;br /&gt;
{|border=&#039;1&#039;&lt;br /&gt;
 !Conversion&lt;br /&gt;
 !Common Circuits&lt;br /&gt;
 !Notes&lt;br /&gt;
 |-&lt;br /&gt;
 |AC to AC&lt;br /&gt;
 |Transformer&lt;br /&gt;
 |Transformers are used when the output frequency is the same as the input frequency.  If the frequency needs to be changed, then a Rectifier-Inverter cascade needs to be used.&lt;br /&gt;
 |-&lt;br /&gt;
 |AC to DC&lt;br /&gt;
 |Rectifier&lt;br /&gt;
 |A rectifier alone will produce an unregulated DC voltage.  Rectifiers are often followed by a DC to DC converter or other voltage regulator.   &lt;br /&gt;
 |-&lt;br /&gt;
 |DC to DC&lt;br /&gt;
 |Switching Mode Converter&lt;br /&gt;
 |There are many ways of converting DC voltage, but Switching power supplies tend to be the most versatile and efficient.&lt;br /&gt;
 |-&lt;br /&gt;
 |DC to AC&lt;br /&gt;
 |Inverter&lt;br /&gt;
 |&lt;br /&gt;
 |}&lt;br /&gt;
&lt;br /&gt;
Efficiency is a key consideration with all converters.  Power lost to inefficiency results in heat.  This means that more expensive parts may be needed, more parts added for cooling systems, and an overall higher stress on the whole unit.  Converter circuits will have a sweet spot where they are most efficient, and then efficiency will roll off as the operating point moves away from that spot.  This can make it difficult to make a single unit that is capable of a wide range of operations.&lt;br /&gt;
&lt;br /&gt;
=== Transformers ===&lt;br /&gt;
Transformers work with AC power.  They have two (or more for multi-phase AC) coils that are inductively coupled.  Electricity flowing through one of them with produce an electricity flow through the other.  By using a different number of turns in the coils, the voltage can be stepped up or down.  Transformers are pretty simple to operate, requiring no external power or controller, and can be quite robust.  However they tend to use a lot metal, making them large and heavy.&lt;br /&gt;
 &lt;br /&gt;
=== Rectifiers ===&lt;br /&gt;
The most useful rectifier is the diode bridge.  It uses four diodes to convert AC power, which is negative half of the time, into all positive power.  The voltage will still vary, however, so it becomes most useful when a capacitor is added to the DC output to smooth the ripples.  The maximum DC voltage that a diode bridge will have is the peak AC voltage minus twice the voltage drop of the diodes.  &lt;br /&gt;
&lt;br /&gt;
=== Switching Mode Converters===&lt;br /&gt;
Switching mode converters use Pulse Width Modulation to controller a transistor.  This means that the transistor is either fully on, or completely off.  Both of these state ideally result in no power loss in the transistor.  Two of the basic examples of this type of converter are the Buck and the Boost.  The Buck converter can convert DC voltages to a lower voltage, while the Boost can convert to higher voltages.  Different configurations of these circuits can be made that combine these two types or adjust them to produce a large range of DC outputs, including outputs that are negative from the inputs. &lt;br /&gt;
&lt;br /&gt;
=== Inverters ===&lt;br /&gt;
Inverters take DC voltage and create a square or sine wave.  They often include a transformer to bring the voltage to the desired output voltage.&lt;br /&gt;
&lt;br /&gt;
== Controllers ==&lt;br /&gt;
Controllers adjust the voltage, current, or total power going to a load.  &lt;br /&gt;
=== Pulse Width Modulation (PWM)===&lt;br /&gt;
Pulse Width Modulation is a method of controlling current to a load by using short bursts of full power of varying duty cycles.  The advantage of PWM is that the controller operates in a fully switch mode, giving very good efficiency, and the load will receive full power during the &#039;on&#039; portions.  PWM can be used in all kinds of applications from controlling the brightness of an LED, to adjusting the speed of an electric motor.&lt;br /&gt;
=== Constant Current / Constant Voltage ===&lt;br /&gt;
Constant Current and Constant Voltage supplies will try to keep the current going through a load, or the voltage across a load, constant even if load changes.  &lt;br /&gt;
== Specialized Devices ==&lt;br /&gt;
There are many specialized devices that perform a combination of functions and monitoring.&lt;br /&gt;
=== Battery Chargers and Monitors ===&lt;br /&gt;
Different types of batteries have generally have different charging profiles so battery chargers need to be designed with a particular battery technology in mind.  Voltage, current, temperature of the battery, and time charging are all factors that need to be taken into account.&lt;br /&gt;
=== Motor Controllers ===&lt;br /&gt;
There are many types of motors, so again, there are many types of controllers.  Some examples of other factors that the controllers may get additional feedback on are RPMs, incremental position, absolute position, or force.&lt;br /&gt;
See [[Electric Motor Controls]] for details.&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
*[[Electronics]]&lt;br /&gt;
*[http://learn.sparkfun.com/tutorials/ Electronics Skills Tutorial] basic skill sets and knowledge from Sparkfun&lt;br /&gt;
&lt;br /&gt;
[[Category:Electronics]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Electricity&amp;diff=113381</id>
		<title>Electricity</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Electricity&amp;diff=113381"/>
		<updated>2014-01-02T20:43:31Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=Overview=&lt;br /&gt;
Links to research on various electrical components of the [[GVCS]].&lt;br /&gt;
&lt;br /&gt;
===Main===&lt;br /&gt;
&lt;br /&gt;
*[[Crash Course on Power Electronics]]&lt;br /&gt;
*[[Electronics List]]&lt;br /&gt;
&lt;br /&gt;
==Universal Power Supply==&lt;br /&gt;
&lt;br /&gt;
* [[Universal Power Supply]]&lt;br /&gt;
&lt;br /&gt;
==Generation==&lt;br /&gt;
* Fuel-based Generators&lt;br /&gt;
** Gas Fuel&lt;br /&gt;
** Liquid Fuels&lt;br /&gt;
* Human Generators&lt;br /&gt;
** [[Bicycle technology|Bicycle Generator]]&lt;br /&gt;
* Hydroelectric&lt;br /&gt;
* Solar PV&lt;br /&gt;
* [[Steam Engine]]&lt;br /&gt;
* [[Open Source Stirling Engine Projects | Sterling Engines ]]&lt;br /&gt;
* [[Wind Turbine]]&lt;br /&gt;
&lt;br /&gt;
* [[Electric Motors/Generators]]&lt;br /&gt;
* [[Electrical energy storage]]&lt;br /&gt;
* [[Generator Theory]]&lt;br /&gt;
&lt;br /&gt;
==Storage==&lt;br /&gt;
* [[Battery]]&lt;br /&gt;
** [[Aluminum-Air Battery]]&lt;br /&gt;
** [[Lead Acid batteries]]&lt;br /&gt;
** [[Nickel-Iron Battery]]&lt;br /&gt;
*** [[Edison Battery]]&lt;br /&gt;
* [[Battery Chemistry]]&lt;br /&gt;
* [[Electrical energy storage]]&lt;br /&gt;
&lt;br /&gt;
==Tools==&lt;br /&gt;
&lt;br /&gt;
* Ammeter&lt;br /&gt;
* [[Charge Controller]]&lt;br /&gt;
* [[Inverter Concept]]&lt;br /&gt;
* [[Energy Monitor]]&lt;br /&gt;
* Variable Power Source&lt;br /&gt;
* Voltmeter&lt;br /&gt;
&lt;br /&gt;
==Interfaces==&lt;br /&gt;
* [[12 V connectors]]&lt;br /&gt;
[[File:4_prong_wiring.JPG|200px|right| 4 Prong Wiring Diagram]]&lt;br /&gt;
* &#039;&#039;&#039;4 Prong 240V 30/50A socket to 3 Prong 240V 30/50A receptacle instructions&#039;&#039;&#039; (for miller generator conversion) &lt;br /&gt;
**Use 3 strand (3+ground) 6 gauge wire.&lt;br /&gt;
**For 4 prong socket: &lt;br /&gt;
*#Connect bare copper ground to round, top prong&lt;br /&gt;
*#Connect white to bottom, square prong&lt;br /&gt;
*#Connect black &amp;amp; red (hot) leads to side, square prongs&lt;br /&gt;
[[File:3_prong_wiring.JPG|200px|right| 3 Prong Wiring Diagram]]&lt;br /&gt;
**For 3 prong receptacle&lt;br /&gt;
*#Connect bare copper ground to center, square prong&lt;br /&gt;
*#Connect red &amp;amp; black leads to other two prongs&lt;br /&gt;
*#Cut white lead at base of plug. Do not attach.&lt;br /&gt;
[http://answers.yahoo.com/question/index?qid=20090330221753AAfGCvJ| Yahoo answers source for cutting neutral]&lt;br /&gt;
&amp;lt;br/&amp;gt;[http://www.how-to-wire-it.com/wire-a-dryer-outlet.html| Images source]&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
{{UPS}}&lt;br /&gt;
* [http://en.wikipedia.org/wiki/Electricity Wikipedia: Electricity]&lt;br /&gt;
&lt;br /&gt;
[[Category:Energy]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Electricity&amp;diff=113380</id>
		<title>Electricity</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Electricity&amp;diff=113380"/>
		<updated>2014-01-02T20:40:59Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=Overview=&lt;br /&gt;
Links to research on various electrical components of the [[GVCS]].&lt;br /&gt;
&lt;br /&gt;
===Main===&lt;br /&gt;
&lt;br /&gt;
*[[Crash Course on Power Electronics]]&lt;br /&gt;
*[https://learn.sparkfun.com/tutorials?utm_source=SparkFun+Customer+Newsletter&amp;amp;utm_campaign=18882dd364-Dec30-Jan3_Newsletter&amp;amp;utm_medium=email&amp;amp;utm_term=0_fa5287abaf-18882dd364-7184005// Electronics Skills Tutorial] basic skill sets and knowledge from Sparkfun&lt;br /&gt;
*[[Electronics List]]&lt;br /&gt;
&lt;br /&gt;
==Universal Power Supply==&lt;br /&gt;
&lt;br /&gt;
* [[Universal Power Supply]]&lt;br /&gt;
&lt;br /&gt;
==Generation==&lt;br /&gt;
* Fuel-based Generators&lt;br /&gt;
** Gas Fuel&lt;br /&gt;
** Liquid Fuels&lt;br /&gt;
* Human Generators&lt;br /&gt;
** [[Bicycle technology|Bicycle Generator]]&lt;br /&gt;
* Hydroelectric&lt;br /&gt;
* Solar PV&lt;br /&gt;
* [[Steam Engine]]&lt;br /&gt;
* [[Open Source Stirling Engine Projects | Sterling Engines ]]&lt;br /&gt;
* [[Wind Turbine]]&lt;br /&gt;
&lt;br /&gt;
* [[Electric Motors/Generators]]&lt;br /&gt;
* [[Electrical energy storage]]&lt;br /&gt;
* [[Generator Theory]]&lt;br /&gt;
&lt;br /&gt;
==Storage==&lt;br /&gt;
* [[Battery]]&lt;br /&gt;
** [[Aluminum-Air Battery]]&lt;br /&gt;
** [[Lead Acid batteries]]&lt;br /&gt;
** [[Nickel-Iron Battery]]&lt;br /&gt;
*** [[Edison Battery]]&lt;br /&gt;
* [[Battery Chemistry]]&lt;br /&gt;
* [[Electrical energy storage]]&lt;br /&gt;
&lt;br /&gt;
==Tools==&lt;br /&gt;
&lt;br /&gt;
* Ammeter&lt;br /&gt;
* [[Charge Controller]]&lt;br /&gt;
* [[Inverter Concept]]&lt;br /&gt;
* [[Energy Monitor]]&lt;br /&gt;
* Variable Power Source&lt;br /&gt;
* Voltmeter&lt;br /&gt;
&lt;br /&gt;
==Interfaces==&lt;br /&gt;
* [[12 V connectors]]&lt;br /&gt;
[[File:4_prong_wiring.JPG|200px|right| 4 Prong Wiring Diagram]]&lt;br /&gt;
* &#039;&#039;&#039;4 Prong 240V 30/50A socket to 3 Prong 240V 30/50A receptacle instructions&#039;&#039;&#039; (for miller generator conversion) &lt;br /&gt;
**Use 3 strand (3+ground) 6 gauge wire.&lt;br /&gt;
**For 4 prong socket: &lt;br /&gt;
*#Connect bare copper ground to round, top prong&lt;br /&gt;
*#Connect white to bottom, square prong&lt;br /&gt;
*#Connect black &amp;amp; red (hot) leads to side, square prongs&lt;br /&gt;
[[File:3_prong_wiring.JPG|200px|right| 3 Prong Wiring Diagram]]&lt;br /&gt;
**For 3 prong receptacle&lt;br /&gt;
*#Connect bare copper ground to center, square prong&lt;br /&gt;
*#Connect red &amp;amp; black leads to other two prongs&lt;br /&gt;
*#Cut white lead at base of plug. Do not attach.&lt;br /&gt;
[http://answers.yahoo.com/question/index?qid=20090330221753AAfGCvJ| Yahoo answers source for cutting neutral]&lt;br /&gt;
&amp;lt;br/&amp;gt;[http://www.how-to-wire-it.com/wire-a-dryer-outlet.html| Images source]&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
{{UPS}}&lt;br /&gt;
* [http://en.wikipedia.org/wiki/Electricity Wikipedia: Electricity]&lt;br /&gt;
&lt;br /&gt;
[[Category:Energy]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Electricity&amp;diff=113379</id>
		<title>Electricity</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Electricity&amp;diff=113379"/>
		<updated>2014-01-02T20:38:39Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=Overview=&lt;br /&gt;
Links to research on various electrical components of the [[GVCS]].&lt;br /&gt;
&lt;br /&gt;
===Main===&lt;br /&gt;
&lt;br /&gt;
*[[Crash Course on Power Electronics]]&lt;br /&gt;
*[[https://learn.sparkfun.com/tutorials?utm_source=SparkFun+Customer+Newsletter&amp;amp;utm_campaign=18882dd364-Dec30-Jan3_Newsletter&amp;amp;utm_medium=email&amp;amp;utm_term=0_fa5287abaf-18882dd364-7184005/ Electronics Skills Tutorial]] basic skill sets and knowledge from Sparkfun&lt;br /&gt;
*[[Electronics List]]&lt;br /&gt;
&lt;br /&gt;
==Universal Power Supply==&lt;br /&gt;
&lt;br /&gt;
* [[Universal Power Supply]]&lt;br /&gt;
&lt;br /&gt;
==Generation==&lt;br /&gt;
* Fuel-based Generators&lt;br /&gt;
** Gas Fuel&lt;br /&gt;
** Liquid Fuels&lt;br /&gt;
* Human Generators&lt;br /&gt;
** [[Bicycle technology|Bicycle Generator]]&lt;br /&gt;
* Hydroelectric&lt;br /&gt;
* Solar PV&lt;br /&gt;
* [[Steam Engine]]&lt;br /&gt;
* [[Open Source Stirling Engine Projects | Sterling Engines ]]&lt;br /&gt;
* [[Wind Turbine]]&lt;br /&gt;
&lt;br /&gt;
* [[Electric Motors/Generators]]&lt;br /&gt;
* [[Electrical energy storage]]&lt;br /&gt;
* [[Generator Theory]]&lt;br /&gt;
&lt;br /&gt;
==Storage==&lt;br /&gt;
* [[Battery]]&lt;br /&gt;
** [[Aluminum-Air Battery]]&lt;br /&gt;
** [[Lead Acid batteries]]&lt;br /&gt;
** [[Nickel-Iron Battery]]&lt;br /&gt;
*** [[Edison Battery]]&lt;br /&gt;
* [[Battery Chemistry]]&lt;br /&gt;
* [[Electrical energy storage]]&lt;br /&gt;
&lt;br /&gt;
==Tools==&lt;br /&gt;
&lt;br /&gt;
* Ammeter&lt;br /&gt;
* [[Charge Controller]]&lt;br /&gt;
* [[Inverter Concept]]&lt;br /&gt;
* [[Energy Monitor]]&lt;br /&gt;
* Variable Power Source&lt;br /&gt;
* Voltmeter&lt;br /&gt;
&lt;br /&gt;
==Interfaces==&lt;br /&gt;
* [[12 V connectors]]&lt;br /&gt;
[[File:4_prong_wiring.JPG|200px|right| 4 Prong Wiring Diagram]]&lt;br /&gt;
* &#039;&#039;&#039;4 Prong 240V 30/50A socket to 3 Prong 240V 30/50A receptacle instructions&#039;&#039;&#039; (for miller generator conversion) &lt;br /&gt;
**Use 3 strand (3+ground) 6 gauge wire.&lt;br /&gt;
**For 4 prong socket: &lt;br /&gt;
*#Connect bare copper ground to round, top prong&lt;br /&gt;
*#Connect white to bottom, square prong&lt;br /&gt;
*#Connect black &amp;amp; red (hot) leads to side, square prongs&lt;br /&gt;
[[File:3_prong_wiring.JPG|200px|right| 3 Prong Wiring Diagram]]&lt;br /&gt;
**For 3 prong receptacle&lt;br /&gt;
*#Connect bare copper ground to center, square prong&lt;br /&gt;
*#Connect red &amp;amp; black leads to other two prongs&lt;br /&gt;
*#Cut white lead at base of plug. Do not attach.&lt;br /&gt;
[http://answers.yahoo.com/question/index?qid=20090330221753AAfGCvJ| Yahoo answers source for cutting neutral]&lt;br /&gt;
&amp;lt;br/&amp;gt;[http://www.how-to-wire-it.com/wire-a-dryer-outlet.html| Images source]&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
{{UPS}}&lt;br /&gt;
* [http://en.wikipedia.org/wiki/Electricity Wikipedia: Electricity]&lt;br /&gt;
&lt;br /&gt;
[[Category:Energy]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Aquaculture&amp;diff=113351</id>
		<title>Aquaculture</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Aquaculture&amp;diff=113351"/>
		<updated>2013-12-30T22:23:07Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Open-source oyster gardening */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Category=Food and Agriculture}}&lt;br /&gt;
Aquaculture is farming on water. Many of the same principles as farming on land apply, and there can also be synergy between land-based and water-based farming - for example, chickens and ducks will find forage at the edge of the pond. In any system of agriculture based on the interconnections between different organisms, the most productive area will be the edge between two different environments. Therefore, when integrating aquaculture and agriculture it is best to maximize the edge length of the pond; a square pond is a bad idea; one with crinkly edges is much better.&lt;br /&gt;
&lt;br /&gt;
Because fish are cold-blooded, and because water provides buoyancy so they do not have to expend energy to hold themselves up all the time, they are much more energy-efficient organisms than land based animals. Nutrients dissolved in water are more readily absorbed by organisms. For these reasons, aquaculture is 4-20 times more efficient than land-based agriculture in terms of the energy used to make a unit of food and the yield per unit of area. You can, for example, get 12-15kg of food per year from a single taro plant. &lt;br /&gt;
&lt;br /&gt;
Water quality can be controlled to a certain extent by landscape design. Large stones placed in a pond will serve as a heat sink, making the water cooler in hot weather and warmer in cool weather. Growing reeds helps to oxygenate the water. Freshwater reeds grow much faster than any land-based plants can, so make a good source of feed for [[Ruminants|herbivorous animals]]. [[Algae]] often forms the bottom of the food chain in an aquaculture system and goes on to be converted into larger edible organisms. Therefore, an area of still water with tree stumps where algae will grow can be advantageous.&lt;br /&gt;
&lt;br /&gt;
See also [[Aquaponics|aquaponics]], a more controlled method of growing fish, and [[Algae|algae farming]].&lt;br /&gt;
&lt;br /&gt;
==Chinampa farming==&lt;br /&gt;
[[File:Chinampa.gif|center]]&amp;lt;br&amp;gt;&#039;&#039;&#039;Chimpanas&#039;&#039;&#039; were a highly productive means of agriculture developed by the Aztec civilization. They possibly hold the title of the highest-yielding kind of traditional agriculture. They have since been adopted by the permaculture movement. &lt;br /&gt;
&lt;br /&gt;
They consist of a series of alternating canals and narrow artificial islands. This gives you a lot of different areas with different yields -&lt;br /&gt;
*The land - this can grow vegetables, trees, chickens etc.&lt;br /&gt;
*The surface of the water - this can grow ducks, floating plants such as lotus&lt;br /&gt;
*The middle of the water - this can grow fish and aquatic plants&lt;br /&gt;
*The bottom of the water - this can grow prawns, catfish etc.&lt;br /&gt;
*The edge between the water and the land - this can grow reeds, taro, typha (as chicken feed) etc.&lt;br /&gt;
*A trellis above the water - this can grow vine-plants such as grapes, strawberries etc. while shading the water.&lt;br /&gt;
These different areas also synergize with each other. The vines drop nutrients into the water. The water provides nutrient for reed crops which feed land-based animals. The ecosystem can become extremely complex, with thousands of useful synergies.&lt;br /&gt;
&lt;br /&gt;
Aztec chinampas were intermittently fertilized with compost and with mud dredged from the bottom of the lake. The water flowing around the island creates a microclimate in which extremes of temperature are mitigated.&lt;br /&gt;
&lt;br /&gt;
Chinampas nowadays usually have canals about 1.5m deep. The Aztecs used major canals (&#039;&#039;acalotes&#039;&#039;) which were 5m wide and 1.5-4m deep, plus minor canals (&#039;&#039;apantles&#039;&#039;) which were 1-3m wide and 1m deep.&lt;br /&gt;
&lt;br /&gt;
*http://www.plu.edu/~mayac/building-chinampa/home.html - Good info on building methods&lt;br /&gt;
*http://www.chinampas.info/ - A site maintained by a guy who has done PhD research on chinampas&lt;br /&gt;
*http://www.apms.org/japm/vol17/v17p74.pdf&lt;br /&gt;
&lt;br /&gt;
==Video: Sepp Holzer&#039;s permaculture - &#039;&#039;Aquaculture: Synergy of Land and Water&#039;&#039;==&lt;br /&gt;
&amp;lt;html&amp;gt;&amp;lt;embed id=VideoPlayback src=http://video.google.com/googleplayer.swf?docid=235437896615994763&amp;amp;hl=en&amp;amp;fs=true style=width:400px;height:326px allowFullScreen=true allowScriptAccess=always type=application/x-shockwave-flash&amp;gt; &amp;lt;/embed&amp;gt;&amp;lt;/html&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Open-source fish farm==&lt;br /&gt;
[[Image:SmallFishFarm.jpg|center|thumb|350px|An [http://www.n55.dk/manuals/fishfarm/fishfarm.html open-source design for a small modular fish farm] has been made available by the opensorcerors at N55.dk. It can be stocked with fish and left floating in any body of water you have on your land. Fish can easily be harvested from the module. Multiple modules can be linked together, according to how much room you have.]] &lt;br /&gt;
&lt;br /&gt;
==Open-source oyster gardening==&lt;br /&gt;
Oysters provide a food source in addition to substantial environmental benefits, such as filtering water and providing a marine habitat for smaller fish and organisms.  Permits may be required depending on locality.&lt;br /&gt;
*[http://www.oystergardener.org/ TOGA]: The Tidewater Oyster Gardeners Association provides information on [http://www.oystergardener.org/#!how-to-ge-started/c3ua/ getting starter in oyster gardening] including build plans.&lt;br /&gt;
*[http://wmpeople.wm.edu/asset/index/vspain/taylorfloatdesign/ Taylor Float Plans]: a Taylor Float is one example of &amp;quot;rafts&amp;quot; used to grow oysters from spat (oyster &amp;quot;seed&amp;quot;).&lt;br /&gt;
*[[Wikipedia: Oyster farming]]&lt;br /&gt;
&lt;br /&gt;
==Other resources==&lt;br /&gt;
*[http://www.kickasstorrents.com/bill-mollison-aquaculture-a-permaculture-perspective-12-hours-mp3-t2285802.html Bill Mollison, 15 hour audio lecure series on aquaculture]&lt;br /&gt;
*[http://thepiratebay.org/torrent/5040528/PERMACULTURE__A_Designers_Manual__Bill_Mollison &#039;&#039;Permaculture: A Designer&#039;s Manual&#039;&#039;] by Bill Mollison. Contains a chapter on aquaculture.&lt;br /&gt;
*[http://goodfishbadfish.com.au/ Information About Sustainable Seafood]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Aquaculture&amp;diff=113350</id>
		<title>Aquaculture</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Aquaculture&amp;diff=113350"/>
		<updated>2013-12-30T22:16:14Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Open-source oyster gardening */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Category=Food and Agriculture}}&lt;br /&gt;
Aquaculture is farming on water. Many of the same principles as farming on land apply, and there can also be synergy between land-based and water-based farming - for example, chickens and ducks will find forage at the edge of the pond. In any system of agriculture based on the interconnections between different organisms, the most productive area will be the edge between two different environments. Therefore, when integrating aquaculture and agriculture it is best to maximize the edge length of the pond; a square pond is a bad idea; one with crinkly edges is much better.&lt;br /&gt;
&lt;br /&gt;
Because fish are cold-blooded, and because water provides buoyancy so they do not have to expend energy to hold themselves up all the time, they are much more energy-efficient organisms than land based animals. Nutrients dissolved in water are more readily absorbed by organisms. For these reasons, aquaculture is 4-20 times more efficient than land-based agriculture in terms of the energy used to make a unit of food and the yield per unit of area. You can, for example, get 12-15kg of food per year from a single taro plant. &lt;br /&gt;
&lt;br /&gt;
Water quality can be controlled to a certain extent by landscape design. Large stones placed in a pond will serve as a heat sink, making the water cooler in hot weather and warmer in cool weather. Growing reeds helps to oxygenate the water. Freshwater reeds grow much faster than any land-based plants can, so make a good source of feed for [[Ruminants|herbivorous animals]]. [[Algae]] often forms the bottom of the food chain in an aquaculture system and goes on to be converted into larger edible organisms. Therefore, an area of still water with tree stumps where algae will grow can be advantageous.&lt;br /&gt;
&lt;br /&gt;
See also [[Aquaponics|aquaponics]], a more controlled method of growing fish, and [[Algae|algae farming]].&lt;br /&gt;
&lt;br /&gt;
==Chinampa farming==&lt;br /&gt;
[[File:Chinampa.gif|center]]&amp;lt;br&amp;gt;&#039;&#039;&#039;Chimpanas&#039;&#039;&#039; were a highly productive means of agriculture developed by the Aztec civilization. They possibly hold the title of the highest-yielding kind of traditional agriculture. They have since been adopted by the permaculture movement. &lt;br /&gt;
&lt;br /&gt;
They consist of a series of alternating canals and narrow artificial islands. This gives you a lot of different areas with different yields -&lt;br /&gt;
*The land - this can grow vegetables, trees, chickens etc.&lt;br /&gt;
*The surface of the water - this can grow ducks, floating plants such as lotus&lt;br /&gt;
*The middle of the water - this can grow fish and aquatic plants&lt;br /&gt;
*The bottom of the water - this can grow prawns, catfish etc.&lt;br /&gt;
*The edge between the water and the land - this can grow reeds, taro, typha (as chicken feed) etc.&lt;br /&gt;
*A trellis above the water - this can grow vine-plants such as grapes, strawberries etc. while shading the water.&lt;br /&gt;
These different areas also synergize with each other. The vines drop nutrients into the water. The water provides nutrient for reed crops which feed land-based animals. The ecosystem can become extremely complex, with thousands of useful synergies.&lt;br /&gt;
&lt;br /&gt;
Aztec chinampas were intermittently fertilized with compost and with mud dredged from the bottom of the lake. The water flowing around the island creates a microclimate in which extremes of temperature are mitigated.&lt;br /&gt;
&lt;br /&gt;
Chinampas nowadays usually have canals about 1.5m deep. The Aztecs used major canals (&#039;&#039;acalotes&#039;&#039;) which were 5m wide and 1.5-4m deep, plus minor canals (&#039;&#039;apantles&#039;&#039;) which were 1-3m wide and 1m deep.&lt;br /&gt;
&lt;br /&gt;
*http://www.plu.edu/~mayac/building-chinampa/home.html - Good info on building methods&lt;br /&gt;
*http://www.chinampas.info/ - A site maintained by a guy who has done PhD research on chinampas&lt;br /&gt;
*http://www.apms.org/japm/vol17/v17p74.pdf&lt;br /&gt;
&lt;br /&gt;
==Video: Sepp Holzer&#039;s permaculture - &#039;&#039;Aquaculture: Synergy of Land and Water&#039;&#039;==&lt;br /&gt;
&amp;lt;html&amp;gt;&amp;lt;embed id=VideoPlayback src=http://video.google.com/googleplayer.swf?docid=235437896615994763&amp;amp;hl=en&amp;amp;fs=true style=width:400px;height:326px allowFullScreen=true allowScriptAccess=always type=application/x-shockwave-flash&amp;gt; &amp;lt;/embed&amp;gt;&amp;lt;/html&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Open-source fish farm==&lt;br /&gt;
[[Image:SmallFishFarm.jpg|center|thumb|350px|An [http://www.n55.dk/manuals/fishfarm/fishfarm.html open-source design for a small modular fish farm] has been made available by the opensorcerors at N55.dk. It can be stocked with fish and left floating in any body of water you have on your land. Fish can easily be harvested from the module. Multiple modules can be linked together, according to how much room you have.]] &lt;br /&gt;
&lt;br /&gt;
==Open-source oyster gardening==&lt;br /&gt;
Oysters provide a food source in addition to substantial environmental benefits, such as filtering water and providing a marine habitat for smaller fish and organisms.&lt;br /&gt;
*[http://www.oystergardener.org/ TOGA]: The Tidewater Oyster Gardeners Association provides information on [http://www.oystergardener.org/#!how-to-ge-started/c3ua/ getting starter in oyster gardening] including build plans.&lt;br /&gt;
*[http://wmpeople.wm.edu/asset/index/vspain/taylorfloatdesign/ Taylor Float Plans]: a Taylor Float is one example of &amp;quot;rafts&amp;quot; used to grow oysters from spat.&lt;br /&gt;
*[[Wikipedia: Oyster farming]]&lt;br /&gt;
&lt;br /&gt;
==Other resources==&lt;br /&gt;
*[http://www.kickasstorrents.com/bill-mollison-aquaculture-a-permaculture-perspective-12-hours-mp3-t2285802.html Bill Mollison, 15 hour audio lecure series on aquaculture]&lt;br /&gt;
*[http://thepiratebay.org/torrent/5040528/PERMACULTURE__A_Designers_Manual__Bill_Mollison &#039;&#039;Permaculture: A Designer&#039;s Manual&#039;&#039;] by Bill Mollison. Contains a chapter on aquaculture.&lt;br /&gt;
*[http://goodfishbadfish.com.au/ Information About Sustainable Seafood]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Aquaculture&amp;diff=113349</id>
		<title>Aquaculture</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Aquaculture&amp;diff=113349"/>
		<updated>2013-12-30T22:06:33Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Open-source oyster gardening */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Category=Food and Agriculture}}&lt;br /&gt;
Aquaculture is farming on water. Many of the same principles as farming on land apply, and there can also be synergy between land-based and water-based farming - for example, chickens and ducks will find forage at the edge of the pond. In any system of agriculture based on the interconnections between different organisms, the most productive area will be the edge between two different environments. Therefore, when integrating aquaculture and agriculture it is best to maximize the edge length of the pond; a square pond is a bad idea; one with crinkly edges is much better.&lt;br /&gt;
&lt;br /&gt;
Because fish are cold-blooded, and because water provides buoyancy so they do not have to expend energy to hold themselves up all the time, they are much more energy-efficient organisms than land based animals. Nutrients dissolved in water are more readily absorbed by organisms. For these reasons, aquaculture is 4-20 times more efficient than land-based agriculture in terms of the energy used to make a unit of food and the yield per unit of area. You can, for example, get 12-15kg of food per year from a single taro plant. &lt;br /&gt;
&lt;br /&gt;
Water quality can be controlled to a certain extent by landscape design. Large stones placed in a pond will serve as a heat sink, making the water cooler in hot weather and warmer in cool weather. Growing reeds helps to oxygenate the water. Freshwater reeds grow much faster than any land-based plants can, so make a good source of feed for [[Ruminants|herbivorous animals]]. [[Algae]] often forms the bottom of the food chain in an aquaculture system and goes on to be converted into larger edible organisms. Therefore, an area of still water with tree stumps where algae will grow can be advantageous.&lt;br /&gt;
&lt;br /&gt;
See also [[Aquaponics|aquaponics]], a more controlled method of growing fish, and [[Algae|algae farming]].&lt;br /&gt;
&lt;br /&gt;
==Chinampa farming==&lt;br /&gt;
[[File:Chinampa.gif|center]]&amp;lt;br&amp;gt;&#039;&#039;&#039;Chimpanas&#039;&#039;&#039; were a highly productive means of agriculture developed by the Aztec civilization. They possibly hold the title of the highest-yielding kind of traditional agriculture. They have since been adopted by the permaculture movement. &lt;br /&gt;
&lt;br /&gt;
They consist of a series of alternating canals and narrow artificial islands. This gives you a lot of different areas with different yields -&lt;br /&gt;
*The land - this can grow vegetables, trees, chickens etc.&lt;br /&gt;
*The surface of the water - this can grow ducks, floating plants such as lotus&lt;br /&gt;
*The middle of the water - this can grow fish and aquatic plants&lt;br /&gt;
*The bottom of the water - this can grow prawns, catfish etc.&lt;br /&gt;
*The edge between the water and the land - this can grow reeds, taro, typha (as chicken feed) etc.&lt;br /&gt;
*A trellis above the water - this can grow vine-plants such as grapes, strawberries etc. while shading the water.&lt;br /&gt;
These different areas also synergize with each other. The vines drop nutrients into the water. The water provides nutrient for reed crops which feed land-based animals. The ecosystem can become extremely complex, with thousands of useful synergies.&lt;br /&gt;
&lt;br /&gt;
Aztec chinampas were intermittently fertilized with compost and with mud dredged from the bottom of the lake. The water flowing around the island creates a microclimate in which extremes of temperature are mitigated.&lt;br /&gt;
&lt;br /&gt;
Chinampas nowadays usually have canals about 1.5m deep. The Aztecs used major canals (&#039;&#039;acalotes&#039;&#039;) which were 5m wide and 1.5-4m deep, plus minor canals (&#039;&#039;apantles&#039;&#039;) which were 1-3m wide and 1m deep.&lt;br /&gt;
&lt;br /&gt;
*http://www.plu.edu/~mayac/building-chinampa/home.html - Good info on building methods&lt;br /&gt;
*http://www.chinampas.info/ - A site maintained by a guy who has done PhD research on chinampas&lt;br /&gt;
*http://www.apms.org/japm/vol17/v17p74.pdf&lt;br /&gt;
&lt;br /&gt;
==Video: Sepp Holzer&#039;s permaculture - &#039;&#039;Aquaculture: Synergy of Land and Water&#039;&#039;==&lt;br /&gt;
&amp;lt;html&amp;gt;&amp;lt;embed id=VideoPlayback src=http://video.google.com/googleplayer.swf?docid=235437896615994763&amp;amp;hl=en&amp;amp;fs=true style=width:400px;height:326px allowFullScreen=true allowScriptAccess=always type=application/x-shockwave-flash&amp;gt; &amp;lt;/embed&amp;gt;&amp;lt;/html&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Open-source fish farm==&lt;br /&gt;
[[Image:SmallFishFarm.jpg|center|thumb|350px|An [http://www.n55.dk/manuals/fishfarm/fishfarm.html open-source design for a small modular fish farm] has been made available by the opensorcerors at N55.dk. It can be stocked with fish and left floating in any body of water you have on your land. Fish can easily be harvested from the module. Multiple modules can be linked together, according to how much room you have.]] &lt;br /&gt;
&lt;br /&gt;
==Open-source oyster gardening==&lt;br /&gt;
Oysters provide a food source in addition to substantial environmental benefits, such as filtering water and providing a marine habitat for smaller fish and organisms.&lt;br /&gt;
*[http://www.oystergardener.org/ TOGA]: The Tidewater Oyster Gardeners Association provides information on [http://www.oystergardener.org/#!how-to-ge-started/c3ua/ getting starter in oyster gardening] including build plans.&lt;br /&gt;
*[http://wmpeople.wm.edu/asset/index/vspain/taylorfloatdesign/ Taylor Float Plans]: a Taylor Float is one example of &amp;quot;rafts&amp;quot; used to grow oysters from spat.&lt;br /&gt;
&lt;br /&gt;
==Other resources==&lt;br /&gt;
*[http://www.kickasstorrents.com/bill-mollison-aquaculture-a-permaculture-perspective-12-hours-mp3-t2285802.html Bill Mollison, 15 hour audio lecure series on aquaculture]&lt;br /&gt;
*[http://thepiratebay.org/torrent/5040528/PERMACULTURE__A_Designers_Manual__Bill_Mollison &#039;&#039;Permaculture: A Designer&#039;s Manual&#039;&#039;] by Bill Mollison. Contains a chapter on aquaculture.&lt;br /&gt;
*[http://goodfishbadfish.com.au/ Information About Sustainable Seafood]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Aquaculture&amp;diff=113348</id>
		<title>Aquaculture</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Aquaculture&amp;diff=113348"/>
		<updated>2013-12-30T22:01:24Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Category=Food and Agriculture}}&lt;br /&gt;
Aquaculture is farming on water. Many of the same principles as farming on land apply, and there can also be synergy between land-based and water-based farming - for example, chickens and ducks will find forage at the edge of the pond. In any system of agriculture based on the interconnections between different organisms, the most productive area will be the edge between two different environments. Therefore, when integrating aquaculture and agriculture it is best to maximize the edge length of the pond; a square pond is a bad idea; one with crinkly edges is much better.&lt;br /&gt;
&lt;br /&gt;
Because fish are cold-blooded, and because water provides buoyancy so they do not have to expend energy to hold themselves up all the time, they are much more energy-efficient organisms than land based animals. Nutrients dissolved in water are more readily absorbed by organisms. For these reasons, aquaculture is 4-20 times more efficient than land-based agriculture in terms of the energy used to make a unit of food and the yield per unit of area. You can, for example, get 12-15kg of food per year from a single taro plant. &lt;br /&gt;
&lt;br /&gt;
Water quality can be controlled to a certain extent by landscape design. Large stones placed in a pond will serve as a heat sink, making the water cooler in hot weather and warmer in cool weather. Growing reeds helps to oxygenate the water. Freshwater reeds grow much faster than any land-based plants can, so make a good source of feed for [[Ruminants|herbivorous animals]]. [[Algae]] often forms the bottom of the food chain in an aquaculture system and goes on to be converted into larger edible organisms. Therefore, an area of still water with tree stumps where algae will grow can be advantageous.&lt;br /&gt;
&lt;br /&gt;
See also [[Aquaponics|aquaponics]], a more controlled method of growing fish, and [[Algae|algae farming]].&lt;br /&gt;
&lt;br /&gt;
==Chinampa farming==&lt;br /&gt;
[[File:Chinampa.gif|center]]&amp;lt;br&amp;gt;&#039;&#039;&#039;Chimpanas&#039;&#039;&#039; were a highly productive means of agriculture developed by the Aztec civilization. They possibly hold the title of the highest-yielding kind of traditional agriculture. They have since been adopted by the permaculture movement. &lt;br /&gt;
&lt;br /&gt;
They consist of a series of alternating canals and narrow artificial islands. This gives you a lot of different areas with different yields -&lt;br /&gt;
*The land - this can grow vegetables, trees, chickens etc.&lt;br /&gt;
*The surface of the water - this can grow ducks, floating plants such as lotus&lt;br /&gt;
*The middle of the water - this can grow fish and aquatic plants&lt;br /&gt;
*The bottom of the water - this can grow prawns, catfish etc.&lt;br /&gt;
*The edge between the water and the land - this can grow reeds, taro, typha (as chicken feed) etc.&lt;br /&gt;
*A trellis above the water - this can grow vine-plants such as grapes, strawberries etc. while shading the water.&lt;br /&gt;
These different areas also synergize with each other. The vines drop nutrients into the water. The water provides nutrient for reed crops which feed land-based animals. The ecosystem can become extremely complex, with thousands of useful synergies.&lt;br /&gt;
&lt;br /&gt;
Aztec chinampas were intermittently fertilized with compost and with mud dredged from the bottom of the lake. The water flowing around the island creates a microclimate in which extremes of temperature are mitigated.&lt;br /&gt;
&lt;br /&gt;
Chinampas nowadays usually have canals about 1.5m deep. The Aztecs used major canals (&#039;&#039;acalotes&#039;&#039;) which were 5m wide and 1.5-4m deep, plus minor canals (&#039;&#039;apantles&#039;&#039;) which were 1-3m wide and 1m deep.&lt;br /&gt;
&lt;br /&gt;
*http://www.plu.edu/~mayac/building-chinampa/home.html - Good info on building methods&lt;br /&gt;
*http://www.chinampas.info/ - A site maintained by a guy who has done PhD research on chinampas&lt;br /&gt;
*http://www.apms.org/japm/vol17/v17p74.pdf&lt;br /&gt;
&lt;br /&gt;
==Video: Sepp Holzer&#039;s permaculture - &#039;&#039;Aquaculture: Synergy of Land and Water&#039;&#039;==&lt;br /&gt;
&amp;lt;html&amp;gt;&amp;lt;embed id=VideoPlayback src=http://video.google.com/googleplayer.swf?docid=235437896615994763&amp;amp;hl=en&amp;amp;fs=true style=width:400px;height:326px allowFullScreen=true allowScriptAccess=always type=application/x-shockwave-flash&amp;gt; &amp;lt;/embed&amp;gt;&amp;lt;/html&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Open-source fish farm==&lt;br /&gt;
[[Image:SmallFishFarm.jpg|center|thumb|350px|An [http://www.n55.dk/manuals/fishfarm/fishfarm.html open-source design for a small modular fish farm] has been made available by the opensorcerors at N55.dk. It can be stocked with fish and left floating in any body of water you have on your land. Fish can easily be harvested from the module. Multiple modules can be linked together, according to how much room you have.]] &lt;br /&gt;
&lt;br /&gt;
==Open-source oyster gardening==&lt;br /&gt;
Oysters provide a food source in addition to substantial environmental benefits, such as filtering water and providing a marine habitat for smaller fish and organisms.&lt;br /&gt;
*[http://wmpeople.wm.edu/asset/index/vspain/taylorfloatdesign/ Taylor Float Plans]: a Taylor Float is one example of &amp;quot;rafts&amp;quot; used to grow oysters from spat.&lt;br /&gt;
&lt;br /&gt;
==Other resources==&lt;br /&gt;
*[http://www.kickasstorrents.com/bill-mollison-aquaculture-a-permaculture-perspective-12-hours-mp3-t2285802.html Bill Mollison, 15 hour audio lecure series on aquaculture]&lt;br /&gt;
*[http://thepiratebay.org/torrent/5040528/PERMACULTURE__A_Designers_Manual__Bill_Mollison &#039;&#039;Permaculture: A Designer&#039;s Manual&#039;&#039;] by Bill Mollison. Contains a chapter on aquaculture.&lt;br /&gt;
*[http://goodfishbadfish.com.au/ Information About Sustainable Seafood]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Atterberg_limits&amp;diff=113347</id>
		<title>Atterberg limits</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Atterberg_limits&amp;diff=113347"/>
		<updated>2013-12-30T21:24:10Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* More Information */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;The Atterberg limits are a basic measure of the nature of a fine-grained soil.&lt;br /&gt;
&lt;br /&gt;
==More Information==&lt;br /&gt;
* [http://en.wikipedia.org/wiki/Atterberg_limits Atterberg limits] on Wikipedia.&lt;br /&gt;
[[Category:Soil and compost]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=User:RobotGarden&amp;diff=113273</id>
		<title>User:RobotGarden</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=User:RobotGarden&amp;diff=113273"/>
		<updated>2013-12-29T21:04:02Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: Created page with &amp;quot;I am currently a helicopter pilot, but my educational background is a BS in Systems Engineering with a minor in Russian language.   I studied in Maryland, where I learned cont...&amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;I am currently a helicopter pilot, but my educational background is a BS in Systems Engineering with a minor in Russian language. &lt;br /&gt;
&lt;br /&gt;
I studied in Maryland, where I learned control systems, machine vision, and a fair dose of robotics.&lt;br /&gt;
My senior design project was a semi-automated pool table that was featured in Popular Science magazine http://www.instructables.com/id/Automated-Pool-Table/&lt;br /&gt;
&lt;br /&gt;
My control systems and engineering knowledge has become weak over the years, and so I have tried to keep sharp via occasional hobbies (learning arduino, raspberry pi, linux, and Python.) I have a strong love for the outdoors, including gardening (hence the RobotGarden) and I have a long term desire to start a farm, synthesizing current technology with traditional agriculture.&lt;br /&gt;
&lt;br /&gt;
I love the OSE concept as a means to spread goodwill and independence to communities.  I look forward to helping OSE in a variety of ways in the future!&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113195</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113195"/>
		<updated>2013-12-29T04:13:46Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
=Design=&lt;br /&gt;
[[Gear Pump]]&lt;br /&gt;
*[[Gear Pump Calculator]]&lt;br /&gt;
&lt;br /&gt;
=Air=&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using...&lt;br /&gt;
*[http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
&lt;br /&gt;
=Hydraulic=&lt;br /&gt;
[[Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Electric Hydraulic Pressure Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Steam Powered Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] &lt;br /&gt;
==Submersible Pumps==&lt;br /&gt;
[[Submersible Pump]]&lt;br /&gt;
&lt;br /&gt;
[[1/2 hp Submersible Well Pump]]&lt;br /&gt;
&lt;br /&gt;
[[DC Submersible Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113194</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113194"/>
		<updated>2013-12-29T04:12:50Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
=Design=&lt;br /&gt;
[[Gear Pump]]&lt;br /&gt;
[[Gear Pump Calculator]]&lt;br /&gt;
&lt;br /&gt;
=Air=&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using [http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
&lt;br /&gt;
=Hydraulic=&lt;br /&gt;
[[Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Electric Hydraulic Pressure Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Steam Powered Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] &lt;br /&gt;
==Submersible Pumps==&lt;br /&gt;
[[Submersible Pump]]&lt;br /&gt;
&lt;br /&gt;
[[1/2 hp Submersible Well Pump]]&lt;br /&gt;
&lt;br /&gt;
[[DC Submersible Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113193</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113193"/>
		<updated>2013-12-29T04:11:02Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
=Design=&lt;br /&gt;
[[Gear Pump Calculator]]&lt;br /&gt;
&lt;br /&gt;
=Air=&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using [http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
&lt;br /&gt;
=Hydraulic=&lt;br /&gt;
[[Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Electric Hydraulic Pressure Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Steam Powered Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] &lt;br /&gt;
==Submersible Pumps==&lt;br /&gt;
[[Submersible Pump]]&lt;br /&gt;
&lt;br /&gt;
[[1/2 hp Submersible Well Pump]]&lt;br /&gt;
&lt;br /&gt;
[[DC Submersible Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113192</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113192"/>
		<updated>2013-12-29T04:07:29Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: /* Hydraulic */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
&lt;br /&gt;
=Air=&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using [http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
&lt;br /&gt;
=Hydraulic=&lt;br /&gt;
[[Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Electric Hydraulic Pressure Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Steam Powered Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] &lt;br /&gt;
==Submersible Pumps==&lt;br /&gt;
[[Submersible Pump]]&lt;br /&gt;
&lt;br /&gt;
[[1/2 hp Submersible Well Pump]]&lt;br /&gt;
&lt;br /&gt;
[[DC Submersible Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113191</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113191"/>
		<updated>2013-12-29T03:40:28Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
&lt;br /&gt;
=Air=&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using [http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
&lt;br /&gt;
=Hydraulic=&lt;br /&gt;
[[Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Steam Powered Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] &lt;br /&gt;
==Submersible Pumps==&lt;br /&gt;
[[Submersible Pump]]&lt;br /&gt;
&lt;br /&gt;
[[1/2 hp Submersible Well Pump]]&lt;br /&gt;
&lt;br /&gt;
[[DC Submersible Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113190</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113190"/>
		<updated>2013-12-29T03:38:35Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
&lt;br /&gt;
=Air=&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using [http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
&lt;br /&gt;
=Hydraulic=&lt;br /&gt;
[[Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
[[Steam Powered Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] &lt;br /&gt;
==Submersible Pumps==&lt;br /&gt;
[[Submersible Pump]]&lt;br /&gt;
&lt;br /&gt;
[[DC Submersible Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113189</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113189"/>
		<updated>2013-12-29T03:36:57Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
&lt;br /&gt;
=Air=&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using [http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
[[DC Submersible Pump]]&lt;br /&gt;
=Hydraulic=&lt;br /&gt;
[[Hydraulic Pump]]&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] &lt;br /&gt;
==Submersible Pumps==&lt;br /&gt;
[[Submersible Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113188</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113188"/>
		<updated>2013-12-29T03:29:12Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using [http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
==Submersible Pumps==&lt;br /&gt;
&lt;br /&gt;
=Hydraulic Pumps=&lt;br /&gt;
[[Hydraulic Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113187</id>
		<title>Pump</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Pump&amp;diff=113187"/>
		<updated>2013-12-29T03:23:55Z</updated>

		<summary type="html">&lt;p&gt;RobotGarden: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Used for moving fluids, either liquid or gas.&lt;br /&gt;
&lt;br /&gt;
=Water=&lt;br /&gt;
[[Compressed Air Water Pump]]&lt;br /&gt;
==Hand Powered==&lt;br /&gt;
[http://www.instructables.com/id/How-To-Make-A-PVC-Water-Air-Vacuum-Pump/?ALLSTEPS/ PVC Water / Air / Vacuum Pump] designed by The King of Random using [http://www.instructables.com/id/How-To-Make-a-One-Way-Check-Valve-For-Cheap/ PVC Check Valve]&lt;br /&gt;
==Submersible==&lt;br /&gt;
&lt;br /&gt;
=Hydraulic=&lt;br /&gt;
[[Hydraulic Pump]]&lt;/div&gt;</summary>
		<author><name>RobotGarden</name></author>
	</entry>
</feed>