crabapplepad

Wireless minimalistic slim foldable split keyboard

Features

• Foldable. The keyboard can be folded and put in a pocket
• 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

PCB design

PCB is generated using ergogen. Then it finished in KiCAD. The files are in the hw folder.

To regenerate the PCB run:

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

Firmware

The firmware is based on ZMK and Myrioku Layout adapted for 42 keys. The firmware is in separate repos:

• ZMK Shield for the keyboard
• Myrioku Fork with the configs