2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers59.5 × 78.5 mm
Hackpad
kabirutreja/Cool-HackpadA 6-key (2×3) macropad with a rotary encoder and 0.91" OLED display, built around a Seeed XIAO RP2040.
- Size
- 59.5 × 78.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 14
- Pads
- 55
- Tracks, vias
- 147, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 10 Sep 2026
- Updated
- 14 Sep 2026
Overview
Hackpad is an open-source printed circuit board by kabirutreja, from the kabirutreja/Cool-Hackpad repository on GitHub. It is a 2-layer board of 59.5 × 78.5 mm with 11 parts on 14 nets, routed with 147 tracks and 0 vias.
Its parts include 7 switches and 2 ICs.
README
README.mdCool-Hackpad
A 6-key (2×3) macropad with a rotary encoder and 0.91" OLED display, built around a Seeed XIAO RP2040.
- Keyboard Maintainer: kabirutreja
- Hardware Supported: Seeed XIAO RP2040
- Hardware Availability: custom PCB (see
hackpad.kicad_sch)
Pinout
| Function | XIAO pin | GPIO |
|---|---|---|
| SW1 | D0 | GP26 |
| SW2 | D1 | GP27 |
| SW3 | D2 | GP28 |
| SW4 | D3 | GP29 |
| SW5 | D4 | GP6 |
| SW6 | D5 | GP7 |
| OLED SCL | D6 | GP0 |
| OLED SDA | D7 | GP1 |
| Encoder A | D10 | GP3 |
| Encoder B | D9 | GP4 |
Layers
Base layer
| Copy | Paste | Undo |
|---|---|---|
| Cut | Save | Toggle Media layer |
Encoder: Volume down / up
Media layer
| Play/Pause | Next track | Prev track |
|---|---|---|
| Mute | Lock screen | Toggle back to Base |
Encoder: Brightness down / up
Attribution
Encoder Knob by Kea workshop https://www.printables.com/model/1000044-ec11-encoder-knob/files
Special Thanks to TensorSwe for uploading their project that healped me complete this project ! https://stardance.hackclub.com/projects/45016
Preview images
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6 |
| 1 | ER_OLEDM0.91_1x-I2C | Display:ER_OLEDM0.91_1x-I2C | U2 |
| 1 | LOGO | Demo.preety:bee | G*** |
| 1 | LOGO | Krishna.preety:krishna | G*** |
| 1 | MOUDLE-SEEEDUINO-XIAO | footprints:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW8 |
Questions
How big is the Hackpad PCB?
It measures 59.5 × 78.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad use?
11 parts. 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 kabirutreja/Cool-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.
Can I use the Hackpad design in my own project?
Its repository states no licence, so its author keeps all rights: ask kabirutreja before reusing the design.
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