System-End/hackpad
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hackpad/hackpads/davepad
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David Rahman 08cdd09dda re add screw holes (oops)
2024-10-22 18:05:14 +11:00
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CAD Add files via upload 2024-10-07 13:27:55 +11:00
Firmware Add files via upload 2024-10-07 13:27:55 +11:00
PCB/Davepad re add screw holes (oops) 2024-10-22 18:05:14 +11:00
Readme.md Update readme to add author' 2024-10-21 09:21:10 +11:00

Readme.md

Davepad

Assembly

I'm happy to solder and assemble it myself and do the mounting screws and spacers.

BOM

QTY Part
18 Any Cherry MX style switches, ideally brown but I don't mind
18 Blank keycaps
2 Ec11 Rotary Encoder
20 Through-hole 1N4148 Diodes (Ideally with dimensions L3.6, D1.6 mm or close to)
2 Through hole resistors, 4.7k (Ideally with dimensions L3.6, D1.6 mm or close to)
4 Through hole resistors, 1k (Ideally with dimensions L3.6, D1.6 mm or close to)
1 0.91" I2C OLED (with SSD1306)
1 Seeed XIAO through hole RP2040
1 1x4 Header
1 MCP23017, through hole
1 PCB
1 Case

Case

3d printed, there's just one component, don't mind the colour but purple would be cool.

Notes

  • I want a macropad with easily selectable modes for different applications. In particular, I want to use it as a laptop numpad when I don't have a full keyboard with me.
  • It also needs enough keys to be able to move my main keyboard out of the way when using a graphics tablet and still access all the hotkeys I need in creative software.
  • The case is pretty barebones because I want to be able to see the pcb.
  • My biggest challenge was writing firmware. The QMK docs are pretty good, but don't have specific instructions for running a matrix through an IO expander. This was fun though, as I got to write a lot more code this way :).