Talk:Oliver Log

Fri, Jun,02,2017

Detailed description about "Using the Fork-and-Branch Workflow" within GitHub, if you are working as team on kollaborative projects. See also https://help.github.com/articles/fork-a-repo/

Mon, May,29,2017

Idea to make a D3D-workshop completely relaxed: Just preproduce a number of printers and calibrate them perfectly. If someone doesnt get its own one ready during the course he can take a readymate one. So the promise "you get out here with a running printer" can be easily fullfilled and the workshop is completely free from any stress and totally relaxed (= best learning conditions)

An interesting extension to this idea could be to let any class produce the printers for the next class (and take home a printer from the last class). So any printer creator becomes a kind of responsible godfather to someone elses printer (social relation ;)) Dont know whether the attendees really want that (but one could ask them; the surplus bonus is a nicely calibrated and perfectly running printer).

Sat, May,27,2017

Preparation for torchtable-workgroup meeting on 29.05.:

THCctrl todo:

 * replace J2 with a screw-terminal

 * add arduino nano

 * add interface for TB6600 stepper driver controler

 * add interface for Display-Keypad

Fri, May,26,2017

Lesson learned: I tried in Kicad unsuccessfull different ways to import the 3d .wrl-files automatically, eg. by environment path-variable $KISYS3DMOD, but it is however possible to assign manually a 3d-form towards a footprint by editing its parameters (right mouseclick over footprint, then choose the footprint and in its 3d-settings the "add form" button) and let it point towards your local library-path .wrl-file. There you can also correct wrong orientations of the object, e.g. in a diode.

Tue, May,23,2017

Some links related to the torchtable height controler:

Working document [1] AD7747 [2] Dummy page (?) [3] Pauls log [4]

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Trying to re-use Pauls KiCad-Files run into the problem of beeing an older Version, what means all links are broken, see all the question marks in

• Reimport-problem on older Kicad files
• 

  All default parts are in the newer Kicad version replaced by smaller ones, so the links are broken

This is a known problem and theoretically there exists a way to fix it, see https://rheingoldheavy.com/new-stable-kicad-10-steps-to-import-an-old-kicad-project/, but its way to complicated to go through this procedure. Meaning, since Pauls circuit is not too complicated its probably far less work to simply rebuild it from scratch.

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what about mechanical probing ? https://www.indiegogo.com/projects/bltouch-auto-bed-leveling-sensor-for-3d-printers#/ Answer: probably not well suited because of the heat.

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Master-thesis on capacitive sensors: [5]

Mon, May,22,2017

Preparation for torchtable-workgroup meeting on 23.05.:

Suggestions for the long axis:

- supportet Rails [6] would be nice for better stiffness and rigidity (see [7] at minute 0:30) . Makes a price difference of about 20,- EUR or less per m .

* Instead of one 1"-shaft we could use two 1/2"-shafts to resemble the recent unversal axis design as is.

* Or instead we can use just one 1"-shaft and place the stepper onto the carriage (like shapeoko) 
  ==> simplyfied end-pieces (they are only needed to fix the belt).

- Universal Controler: Powerlolu as stepperdriver for heavier loads ?

* Was already discussed on OSE in 2013, see [8]

* sources are available at 
  GitHub [9] and 
  Upverter [10] and
  Allegro [11] and
  Cuteminds [12] and
  Balestrino [13].  

* new breakout board from OSH park at [14]

* I tested them already [15] [16] in combination with RAMPS and so far they seemed to work well.