4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers90.5 × 96.5 mm
Hackpad
arjver/hackpad-repo(Note that the PCB also includes space for a ToF distance sensor. That's not part of my hackpad yet, but I might get one myself and add it later, to use it for range controls (like volume/brightness by raising/lowering…
- Size
- 90.5 × 96.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 38
- Pads
- 132
- Tracks, vias
- 262, 18
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 1 Jul 2025
- Updated
- 26 Jul 2025
Overview
Hackpad is an open-source printed circuit board by arjver, from the arjver/hackpad-repo repository on GitHub. It is a 2-layer board of 90.5 × 96.5 mm with 18 parts on 38 nets, routed with 262 tracks and 18 vias.
It is built around the SK6812MINI-E. Its parts include 10 switches, 2 resistors, 2 ICs, 2 diodes and 2 connectors. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdBlobPad
- 8x MX switches
- 8x Blank DSA keycaps
- 1x 0.91' OLED
- 2x EC11 rotary encoders
- 1x IO Expander
- 1x XIAO
- 2x SK6812 mini LEDs
- 2x resistors 4.7kOhm
- 4x M3x16mm screws
- 4x M3x5mx4mm heatset inserts
(Note that the PCB also includes space for a ToF distance sensor. That's not part of my hackpad yet, but I might get one myself and add it later, to use it for range controls (like volume/brightness by raising/lowering your hand above the sensor)). Link: https://www.adafruit.com/product/3316
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 |
| 2 | R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2 |
| 2 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_CircularMountingHoles | SW9, SW10 |
| 2 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D1, D2 |
| 1 | Conn_01x04_Pin | OLED:128x64OLED | J1 |
| 1 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J2 |
| 1 | MCP23017_SO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U2 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
Questions
How big is the Hackpad PCB?
It measures 90.5 × 96.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad use?
18 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 arjver/hackpad-repo repository on GitHub, at the commit this page was made from: the board is PCB/hackpad/hackpad.kicad_pcb and its schematic PCB/hackpad/OPL_Kicad_Library-master/Grove Vision AI V2 Library/Grove - Vision AI Module V2.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 arjver before reusing the design.
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