kumekay / crabapplepad

Wireless minimalistic slim foldable split keyboard

crabapplepad v2

Wireless minimalistic foldable split keyboard

Features

• Supports Kailh Choc and MX switches
• Optionally foldable with Choc switches
• Minimalistic. No LEDs, no RGB, no extra keys
• With Kailh Choc it's 3cm thick in the folded state
• Split. The two halves are connected with a 3d printed hinge
• Wireless. Uses Nice!Nano or ProMicro nRF52840 with BLE
• 42 keys (I use Cyrillic layout too and 36 keys is not enough)
• Apple Magic Trackpad can be magnetically attached (optional)

PCB design

PCB is generated using ergogen. Then it finished in KiCAD. To regenerate the PCB run:

npx ergogen . --clean && open output/pcbs/kbd.kicad_pcb

NB! The final PCB was heavily modified in KiCAD

Firmware

The firmware is based on ZMK and Myrioku Layout adapted for 42 keys. T

Where is the slim V1?

It's in the v1 branch. The V1 is ccm thick in the folded state with Kailh X switches. The V2 is 3cm thick with Kailh Choc switches.