this hackpad features 6 keys, a rotary encoder and an OLED display, and uses KMK firmware.

this is my first hardware project and it was SO MUCH FUN i literally couldn't stop and speedran the whole thing in two days. like i'm talking morning to night completely locked in.

would do it again 10/10

fusion 360 was really annoying to figure out. measuring everything to fit together properly took FOREVER.

making the PCB was actually fun though. routing traces felt like playing a game haha.

the hackclub slack was REALLY helpful even though I was just lurking the entire time :D

i think i'm also going to paint the top case later!

• XIAO RP2040 brain
• 128x32 OLED Display
• 1 EC11 Rotary encoder
• 6 keys

PCB	Schematics

The whole thing runs on KMK firmware.

The rotary encoder is a volume knob, press it to pause/play.

The 6 keys are mapped to everyday shortcuts:

• Ctrl+Z (Undo)
• Ctrl+Y (Redo)
• Ctrl+C (Copy)
• Ctrl+V (Paste)
• Alt+Tab (Switch windows)
• Ctrl+Tab (Switch tabs)

I don't know what to make the OLED display just yet, so it has some random text for now.

I'm planning on making the entire thing more interesting later...

• 1x Seeed XIAO RP2040 (Microcontroller)
• 6x Cherry MX switches
• 6x Compatible Keycaps
• 1x EC11 Rotary encoder with push button
• 1x Rotary encoder knob
• 1x SSD1306 OLED display (128x32, I2C)
• 1x Custom PCB
• 3D printed top plate & bottom case (preferred color: pastel blue, or any other pastel color)lor)
• 4x M3 bolts & heatset insertserts
• 4x M3 bolts & heatset insertserts