4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers79.6 × 70.8 mm
HackPad
ryanabraham1/NumPanelHackPad
- Size
- 79.6 × 70.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 22
- Nets
- 26
- Pads
- 120
- Tracks, vias
- 198, 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Jul 2025
- Updated
- 4 Jul 2025
Overview
HackPad is an open-source printed circuit board by ryanabraham1, from the ryanabraham1/NumPanel repository on GitHub. It is a 2-layer board of 79.6 × 70.8 mm with 22 parts on 26 nets, routed with 198 tracks and 6 vias.
It is built around the SK6812MINI-E. Its parts include 12 diodes, 8 switches and 1 IC. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdNumPad
Assembled Picture (without keys installed and screen)
Schematic
PCB
Case Parts:
Base:
Top Panel:
Assembled via screws.
Inspiration
I wanted to create a macropad that allowed me to input things into the calculator quickly with layers, sicne my current keyboard does not have a numpad.
Challenges
This was my first time using KiCad and Fusion so I had to learn how to use both of those tools. The PCB wiring in KiCad was kinda hard since it was my first time and I made a lot of mistakes. Assembling the case together in fusion was also hard since I had to learn about how mates work.
Specifications
BOM:
- 8x Cherry MX Switches
- 12x SK6812 MINI Leds
- 0.91" OLED screen
- 1x XIA0 RP2040
- 8x Blank DSA Keycaps
- 4x M3x16 Bolt
- 4x M3 Heatset The macroboard is run using KMK firmware.
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 8 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW3, SW4, SW5, SW6, SW7, SW8, SW9 |
| 1 | OLED | OLED:SSD1306-0.91-OLED-4pin-128x32 | OL1 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
Questions
How big is the HackPad PCB?
It measures 79.6 × 70.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the HackPad use?
22 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 ryanabraham1/NumPanel 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 ryanabraham1 before reusing the design.
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