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

Catpad PCB is an open-source printed circuit board by Nadoooor, from the Nadoooor/catpad repository on GitHub, published under the MIT licence. It is a 2-layer board of 99.1 × 98.4 mm with 19 parts on 24 nets, routed with 86 tracks and 4 vias.
It is built around the SK6812MINI-E. Its parts include 10 diodes, 8 switches and 1 IC.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | D | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8 |
| 8 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 |
| 2 | SK6812MINI-E | Care_package:SK6812MINI-E_fixed | D9, D10 |
| 1 | MOUDLE-SEEEDUINO-XIAO | Care_package:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
It measures 99.1 × 98.4 mm and has 2 copper layers, 1.6 mm thick.
19 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 Nadoooor/catpad repository on GitHub, at the commit this page was made from: the board is catpad_PCB/catpad_PCB.kicad_pcb and its schematic catpad_PCB/MCU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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

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