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

Hackpad is an open-source printed circuit board by The-Wolfson, from the The-Wolfson/Hackpad repository on GitHub. It is a 2-layer board of 92.5 × 42 mm with 35 parts on 39 nets, routed with 384 tracks and 42 vias.
It is built around the SK6812MINI-E. Its parts include 25 diodes, 7 switches and 1 IC. It belongs with the RP2040 boards of this library.
A hackpad built for Hacklub's YSWS that sends MIDI Control Messages to your DAW of choice. It features 2 rotary encoders, 9 switches, and 16 addressable LEDs.

| Part | Quantity |
|---|---|
| XIAO RP2040 | 1 |
| EC11 Rotary Encoder | 2 |
| SK6812 MINI-E | 16 |
| MX-Style Switch | 7 |
| Through-hole 1N4148 Diode | 9 |
| M3x16mm Screw | 4 |
| M3x5mx4mm Heatset Insert | 4 |
| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | SK6812MINI | LED_SMD:SK6812-MINI-E | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13, LED14, LED15, LED16 |
| 9 | D | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 7 | SW_Push_45deg | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW7, SW8 |
| 2 | RotaryEncoder_Switch_MP | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | RE1, RE2 |
| 1 | XIAO-RP2040-DIP | Seeed Studio XIAO Series Library:XIAO-RP2040-DIP | U1 |
It measures 92.5 × 42 mm and has 2 copper layers, 1.6 mm thick.
35 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 The-Wolfson/Hackpad repository on GitHub, at the commit this page was made from: the board is PCB/Hackpad.kicad_pcb and its schematic PCB/Hackpad.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 The-Wolfson before reusing the design.

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

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