4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers42.9 × 64.3 mm
Hackapad
Sai-Santosh09/HackapadThis project is a compact 4-key travel-themed macropad powered by the Seeed Studio XIAO RP2040. It features four directional navigation keys and two SK6812 MINI-E RGB LEDs.
- Size
- 42.9 × 64.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 7
- Nets
- 16
- Pads
- 42
- Tracks, vias
- 43, 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Jun 2026
- Updated
- 26 Jun 2026
Overview
Hackapad is an open-source printed circuit board by Sai-Santosh09, from the Sai-Santosh09/Hackapad repository on GitHub. It is a 2-layer board of 42.9 × 64.3 mm with 7 parts on 16 nets, routed with 43 tracks and 4 vias.
It is built around the SK6812MINI-E. Its parts include 4 switches, 2 diodes and 1 IC.
Main components
1README
README.mdTravel Navigation Macropad
Overview
This project is a compact 4-key travel-themed macropad powered by the Seeed Studio XIAO RP2040. It features four directional navigation keys and two SK6812 MINI-E RGB LEDs. The project includes a custom PCB designed in KiCad, a custom enclosure designed in Fusion 360, and firmware developed using KMK.
Features
- Seeed Studio XIAO RP2040
- 4 Mechanical Switches
- 2 SK6812 MINI-E RGB LEDs
- Compact 2-Layer PCB
- Custom Designed Enclosure
- KMK Firmware
- USB-C Connectivity
Key Layout
- 8 → Up Arrow
- 6 → Right Arrow
- 4 → Left Arrow
- 2 → Down Arrow
The layout is inspired by classic numpad navigation controls to provide an intuitive travel and navigation experience.
Design Process
After completing the PCB in KiCad, I verified the layout by checking component placement, USB connector alignment, mounting hole positions, and overall board dimensions. I then designed the top and bottom enclosure in Fusion 360 using the PCB as a reference, creating switch cutouts, screw holes, and the internal cavity. After verifying the enclosure dimensions, I exported the models as STEP files. Finally, I configured the KMK firmware by mapping the correct GPIO pins and assigning directional arrow key functions.
Parts
7| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4 |
| 2 | SK6812MINI-E | Asset3:SK6812MINI-E_fixed | D1, D2 |
| 1 | MOUDLE-SEEEDUINO-XIAO | Asset3:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
Questions
How big is the Hackapad PCB?
It measures 42.9 × 64.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackapad use?
7 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 Hackapad KiCad files?
From the Sai-Santosh09/Hackapad repository on GitHub, at the commit this page was made from: the board is PCB files/hackapad.kicad_pcb and its schematic PCB files/hackapad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hackapad design in my own project?
Its repository states no licence, so its author keeps all rights: ask Sai-Santosh09 before reusing the design.
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