Hackpad

Arseniy's HackPad

My Hackpad is a 3×3 macro keypad, which can be programmed to address all needs. It runs on a Seeed XIAO RP2040, and features Cherry MX mechanical switches, SK6812 RGB LEDs, a rotary encoder, and an OLED status display.

Why I built this

I wanted to have a custom keypad on my desk and use shortcuts assigned to each key to simplify and make my workflow more efficient.

Usage

To use Hackpad, order the PCB using gerbers.zip from JLCPCB, print the 3D enclosure, solder the components, install firmware and assemble everything. Edit main.py to customise your keymap.

Schematic

PCB

Files Layout

PCB/
  hackpad.kicad_pro     
  hackpad.kicad_sch
  hackpad.kicad_prl
  hackpad.kicad_pcb
  gerbers.zip    
CAD/
  Hackpad Keyboard Outline.step
  Hackpad PCB.step
  Hackpad case BOTTOM.step
  Hackpad case TOP.step
  Hackpad case FULL.step
Firmware/
  main.py               
images/
  (screenshots)
BOM.csv
README.md

PCB Fabrication Notes

• Board size: 80 × 70 mm, 2 layers, 1.6 mm FR4
• Min trace width: 0.2 mm (signal), 0.5 mm (power)
• Min via: 0.8 mm drill, 0.4 mm annular ring
• Surface finish: HASL or ENIG

Case Printing Notes

• Print Hackpad case TOP.step, Hackpad case BOTTOM.step and Hackpad Keyboard Outline.step in PLA or PETG, 0.2 mm layer height, 3–4 perimeters.
• Insert M3 heat-set inserts into the four corner bosses of the bottom tray using a soldering iron.
• PCB sits on the 2 mm standoffs inside the tray.
• Top plate secures with 4× M3×8 screws through the corner holes.

Bill of Materials

Built with ❤️ by Arseniy