4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers65.5 × 99.2 mm
HackPad
KrishnaSharma206/OmoPad1- Size
- 65.5 × 99.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 30
- Nets
- 32
- Pads
- 138
- Tracks, vias
- 459, 66
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 May 2025
- Updated
- 2 Jun 2025
Overview
HackPad is an open-source printed circuit board by KrishnaSharma206, from the KrishnaSharma206/OmoPad repository on GitHub. It is a 2-layer board of 65.5 × 99.2 mm with 30 parts on 32 nets, routed with 459 tracks and 66 vias.
It is built around the SK6812MINI-E. Its parts include 18 diodes, 10 switches, 1 IC and 1 connector. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdOmoPad
OmoPad is custom macropad with 9 MX switches, One rotary encoder and an OLED display. It uses a KMK firmware, the rotary encoder provides volume control. It has 9 SK6812 mini LEDs, which can be customised.
CAD Model
It uses 4x M3 screws to assemble, there are two 3D printed parts.
PCB
Schematic
PCB Design
Firmware Overview
I am using KMK for thte firmware
BOM
- 1x SEEED XIAO RP2040
- 4x M3 screws
- 4x M3 bolts
- 9x MX switches
- 9x MX key caps
- 1x EC11 encoder with knob
- 1x SD1306 128x32 OLED display
Parts
30| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1N4004 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D12, D13, D15, D16, D17, D19, D20, D21 |
| 9 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 9 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW6, SW7, SW8, SW9, SW10 |
| 1 | Conn_01x04 | OLED:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | RotaryEncoder_Switch | EC11:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW5 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
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Questions
How big is the HackPad PCB?
It measures 65.5 × 99.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the HackPad use?
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.
Where can I download the HackPad KiCad files?
From the KrishnaSharma206/OmoPad 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.
Can I use the HackPad design in my own project?
Its repository states no licence, so its author keeps all rights: ask KrishnaSharma206 before reusing the design.