January 2020 STEAM Camp Kits BOM: Difference between revisions
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*Heat sink fan - $1.4 - [https://www.aliexpress.com/item/32550994803.html?spm=a2g0o.productlist.0.0.3d7c1274vD9yeb&algo_pvid=1be7293b-26bd-4384-93e1-861e6db93035&algo_expid=1be7293b-26bd-4384-93e1-861e6db93035-9&btsid=9d671e9b-ea3c-4461-82b1-ed390611d1df&ws_ab_test=searchweb0_0,searchweb201602_7,searchweb201603_53] | *Heat sink fan - $1.4 - [https://www.aliexpress.com/item/32550994803.html?spm=a2g0o.productlist.0.0.3d7c1274vD9yeb&algo_pvid=1be7293b-26bd-4384-93e1-861e6db93035&algo_expid=1be7293b-26bd-4384-93e1-861e6db93035-9&btsid=9d671e9b-ea3c-4461-82b1-ed390611d1df&ws_ab_test=searchweb0_0,searchweb201602_7,searchweb201603_53] | ||
*m5x10 set screws - 60 cents for 12 - [https://www.mcmaster.com/91390a119] | *m5x10 set screws - 60 cents for 12 - [https://www.mcmaster.com/91390a119] | ||
* | *6 ga wire - 60 cents per foot - [https://www.menards.com/main/electrical/electrical-wire-cable/thhn-electrical-wire/stranded-thhn-building-wire/sku3694714/electrical/electrical-wire-cable/thhn-electrical-wire/stranded-thhn-building-wire/sku3694730/electrical/electrical-wire-cable/thhn-electrical-wire/stranded-thhn-building-wire/sku3695373/electrical/electrical-wire-cable/thhn-electrical-wire/stranded-thhn-building-wire/sku3694730/p-1444442913067.htm] - need 6' per welder - or $4 - | ||
*Rod holder - with 3D printed insulation and ground wire clamp, and 3D printed ground electrode clamp | *Rod holder - with 3D printed insulation and ground wire clamp, and 3D printed ground electrode clamp | ||
*Rod holder structure = bolt + EMT + internal rod. 1/2" EMT - 35 cents/foot. [https://www.menards.com/main/electrical/conduit-conduit-fittings-raceways/conduit/emt-conduit/0559010000/p-1444446525135.htm] | *Rod holder structure = bolt + EMT + internal rod. 1/2" EMT - 35 cents/foot. [https://www.menards.com/main/electrical/conduit-conduit-fittings-raceways/conduit/emt-conduit/0559010000/p-1444446525135.htm] | ||
Revision as of 03:49, 16 December 2019
Shipping - add about $20 per kit for shipping
Tablet
- Screen - 5" 800x480 - $32 [1]
- 7" screen - 1024x600 - $75 - [2]
- 7" screen - $70 - with cables and 5v 2A power supply - [3]
- 7" screen - Aliexpress - $38 - [4]
- Pi - $55 - Pi 4 with 4 GB RAM [5]. Comparison of 3 to 4 - [6]
- Pi camera - $9 for v1 [7] or '$25 for v2 [8] and [[9]]'
- Stabilizer bearings - skateboard bearings
- HDMI cable - $4 - [10]
- Wireless camera module - $20 - [11]
- You can get cheapo camera modules - [12]
- Bluetooth and phone for $40? - [13]
Day 1 - Printer
- Printer - $278 - [14]
- Filament - hex key holder - people print them out for the next bunch
- Filament - razor holder
- Filament - small pliers with 8 mm shaft pivot.
- Filament - motor coupler
- 3D printed ground electrode clamp, butt end
- 3D printed power panel
- Plotter Attachment with set bolt (16 cents, 6 mm bolt)
- 3D Printed etching bath
- 3D printed small vial for etchant
Day 2 - CNC Mill and Plotter
- 555 motor - $5 Jameco - [15]
- motor coupler - $1.25 - [16]
- 1 mm milling drilling bit - [17] - $1.50
- Pen for plotter - [18] . Just use refills. $1. From [19].
- Fabric marker for custom t-shirts
Day 3 - Electronics
- Atmel 328 DIP28 - [20] - $2
- Other components - see DIY Arduino. Crystal - $0.3 - [21],
- $2.11 - USB to serial converter - [22]
- Wires and resistors or capacitors -
- Stripboard (NOT perfboard) - $1 - [23]
- Soldering iron - [24] - $4
- Soldring iron from 40W heater element?
- Copper clad boards
- Copper chloride etchant
Day 4 - Battery Pack + Welder
- [6] 18650 battery pack - 24v nominal - $4 ea - [25] - $3 ea [26]
- Rectifier - $1.51 - 15A - [27]
- Transistor - 2 at $2 each - $4 -
- Heatsink - 2 at $1.2 each - $4 - [28]
- Heat sink fan - $1.4 - [29]
- m5x10 set screws - 60 cents for 12 - [30]
- 6 ga wire - 60 cents per foot - [31] - need 6' per welder - or $4 -
- Rod holder - with 3D printed insulation and ground wire clamp, and 3D printed ground electrode clamp
- Rod holder structure = bolt + EMT + internal rod. 1/2" EMT - 35 cents/foot. [32]
- Rod holder - 1/4" bolt (from 3D printer) screwing into a 3D printed endcap for EMT - just requires a 6 mm nut and bolt. 18 cents, same parts as 3D printer bolts.
- 3/8" rebar push bar for holding rod. 25 cents/foot . [33]