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

The ViviPad is a 4 key macropad, with a rotary encoder, OLED display and backlit keys. It’s designed to control Spotify settings and adjust the music playing. I created this for Hack Club’s Hackpad YSWS.
ViviPad PCB is an open-source printed circuit board by revivia, from the revivia/vivipad repository on GitHub. It is a 2-layer board of 74.4 × 49.3 mm with 15 parts on 20 nets, routed with 105 tracks and 6 vias.
It is built around the SK6812MINI-E. Its parts include 5 switches, 4 diodes, 1 IC and 1 connector. It belongs with the RP2040 boards of this library.
The ViviPad is a 4 key macropad, with a rotary encoder, OLED display and backlit keys. It’s designed to control Spotify settings and adjust the music playing. I created this for Hack Club’s Hackpad YSWS. The V on the case is intended to represent my initial and also look like a music note.
| Schematic | PCB |
|---|---|
| Case | Exploded View |
|---|---|
It’s powered by custom KMK firmware for music related settings. The keys control play/pause, opening spotify, and switching between tracks. The rotary encoder controls audio which is displayed on the OLED display along with a default image.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D1, D2, D3, D4 |
| 4 | SW_Push_45deg | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4 |
| 1 | Conn_01x04_Pin | 0.91 OLED:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW5 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
The 11 most common of 15 parts.
It measures 74.4 × 49.3 mm and has 2 copper layers, 1.6 mm thick.
15 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 revivia/vivipad repository on GitHub, at the commit this page was made from: the board is PCB/ViviPad PCB.kicad_pcb and its schematic PCB/ViviPad Schematic.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 revivia before reusing the design.

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Circuit diagrams and firmware source code for Gboard DIY keyboards

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