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0. Bill of materials
Naomi Silver edited this page Sep 15, 2025
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1 revision
The Bill of materials will be split into multiple sections for if and when I make additional models, I.e., WeeKey 12K etc...
The bill of materials here makes a few assumptions, that you already have many of the typical consumables like solder, flux etc...
| Item | Description | Qty | Unit price | Total | Link | Notes |
|---|---|---|---|---|---|---|
| Raspberry Pi Pico | MCU | 1 | £3.80 | £3.80 | Buy | you do not need to use the pi pico, you could use a pico 2 or teensy but it was what I had lying around and is very inexpensive |
| 9 Cherry profile key switches | Key switches | 9 | £3.15 | £28.35 | Buy | you can use any cherry style key switches, hot swap or not. I don't know how reputable mechboards are but serve as an example for what you can use. |
| Micro USB B cable | power cable | 1 | £3.98 | £3.98 | Buy | Again any micro b cable can be used, if you have one lying around then all the better. (Adjust depending on the input port on your chosen MCU if you do not use a Pico) |
| 3D Printing filament | Roughly 60-70g is needed | 1 | £13.29 | £13.29 | Buy | You don't need to use sunlu or black or even PLA, though I used this exact filament. Dealer choice |
| Solid core 22AWG wire | Wire | 1 | £2.80 | £2.80 | Buy | I couldn't get stranded core of the same gauge to take to the switch pins, you may have better luck but I'd recommend solid core |
| M3x6 machine screws | I've tested M3x6 up to M3x14 and they fit | 1 | £4.99 | £4.99 | Buy | As stated, I modelled a large void where you'll be screwing into, so long as they're M3 you should be able to manage at least M3x6-14 and maybe some leeway under and over though not guaranteed |
| Kapton/Polyimide tape | OPTIONAL | 1 | £4.49 | £4.49 | Buy | Used to help protect some of the PLA during soldering but entire optional, better safe than sorry and I had some lying around |