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

The schematics and code of BadPad!
Hackpad is an open-source printed circuit board by Nashwan1798, from the Nashwan1798/BadPad repository on GitHub. It is a 2-layer board of 62.7 × 98.5 mm with 30 parts on 34 nets, routed with 354 tracks and 66 vias.
It is built around the SK6812MINI-E. Its parts include 18 diodes, 10 switches, 1 IC and 1 connector.
The schematics and code of my BadPad (my own custom macropad)
This is a picture of the full build/assembly. <img src=assets/assembly.png alt="Schematic" width="500"/>
This is a picture of the PCB and I must say building the PCB was the easiest part of this project. <img src=assets/pcb.png alt="Schematic" width="300"/> <img src=assets/pcb3d1.png alt="Schematic" width="300"/>
A screenshot of the case, I honestly needed tons of help of AI with this one because fusion is really really confusing to use and I was not making any progress after hours of work put in. <img src=assets/assemblynomodel.png alt="Schematic" width="500"/>
a picture of the schematic <img src=assets/schematic.png alt="Schematic" width="500"/>
Inspired by Orpheuspad, Keybie-Hackpad, stratum-macropad.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | SK6812MINI-E | ScottoKeebs_MX:SK6812MINI-E_fixed_model | D10, D11, D12, D13, D14, D15, D16, D17, D18 |
| 9 | SW_Push | ScottoKeebs_MX:MX_with_model | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 |
| 9 | ~ | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 1 | MOUDLE-SEEEDUINO-XIAO | footprints:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
| 1 | OLED_128x32 | KiCad-SSD1306-0.91-OLED-4pin-128x32.pretty-master:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW10 |

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It measures 62.7 × 98.5 mm and has 2 copper layers, 1.6 mm thick.
30 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 Nashwan1798/BadPad 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 Nashwan1798 before reusing the design.