
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards

custom keypad
Keypad is an open-source printed circuit board by jayadeep14, from the jayadeep14/keyV1.0 repository on GitHub. It is a 2-layer board of 80 × 40 mm with 10 parts on 16 nets, routed with 88 tracks and 10 vias.
It is built around the SK6812MINI-E. Its parts include 5 switches, 2 diodes and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.
custom keypad for shortcut key and new shortcuts
I’ve been wanting a small, custom keypad for shortcuts while working—something compact, programmable, and fun to build. After looking through different microcontrollers, I decided on the XIAO RP2040 because of its tiny size and good support for CircuitPython .
Holding everything together, I felt excited—and a little nervous—because this is my first time building a keypad from scratch instead of using a kit.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5 |
| 2 | R_Potentiometer | Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1, RV2 |
| 2 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D1, D2 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
It measures 80 × 40 mm and has 2 copper layers, 1.6 mm thick.
10 parts, built around the SK6812MINI-E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the jayadeep14/keyV1.0 repository on GitHub, at the commit this page was made from: the board is pcb/keypad.kicad_pcb and its schematic pcb/keypad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask jayadeep14 before reusing the design.

google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards

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