4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers81 × 62.5 mm
Hackpadd
joelmathewsssss/HACKPADundercity project
- Size
- 81 × 62.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 15
- Pads
- 68
- Tracks, vias
- 65, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Jun 2025
- Updated
- 13 Jul 2026
Overview
Hackpadd is an open-source printed circuit board by joelmathewsssss, from the joelmathewsssss/HACKPAD repository on GitHub. It is a 2-layer board of 81 × 62.5 mm with 10 parts on 15 nets, routed with 65 tracks and 0 vias.
It is built around the SK6812MINI-E. Its parts include 6 switches, 2 ICs and 1 diode. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdThe Player
This is my highway hackpad! It's used for controlling my spotify using a song backwards, pause/play, forwards and go next and previous page. It has a rotary encoder for changing the volume. and I displays a legend on the OLED. I did this project as it was a starter project and my first Hardware YSWS. Never got to finish it till now, after I've gotten more experience with hardware.
Schematic and PCB
CAD
Built
Components
- 5x Cherry MX Switches
- 1x SK6812 MINI Leds
- 1x XIAO RP2040
- 5x Keycaps
- 1x EC11 Rotary Encoder
- 1x .91" OLED Display
- Custom 3D Printed Top Case
- Custom 3D Printed Bottom Case
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | SW_Push | footprints:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW6 |
| 1 | LOGO | footprints:turt | G*** |
| 1 | OLED | OLED:SSD1306-0.91-OLED-4pin-128x32 (1) | U2 |
| 1 | RotaryEncoder | Rotary_Encoder:RotaryEncoder_Alps_EC11E_Vertical_H20mm | SW5 |
| 1 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D1 |
| 1 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW4 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
Questions
How big is the Hackpadd PCB?
It measures 81 × 62.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpadd use?
10 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 Hackpadd KiCad files?
From the joelmathewsssss/HACKPAD repository on GitHub, at the commit this page was made from: the board is PCB/hackpadd.kicad_pcb and its schematic PCB/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 Hackpadd design in my own project?
Its repository states no licence, so its author keeps all rights: ask joelmathewsssss before reusing the design.
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