2 layers11.5 × 13.8 mm

Minimal ffc i2c
keyboard-magpie/minimal-fpc-i2c-pcb
Minimal adapter board for converting keyboard i2c oled pins to ffc/fpc ribbon cable for keyboards such as crkbd or kyria
4 parts104GPL-3.0
KiCad boards from 2 GitHub repositories tagged “sofle”, the most starred first; open any of them in PCBKit.

keyboard-magpie/minimal-fpc-i2c-pcb
Minimal adapter board for converting keyboard i2c oled pins to ffc/fpc ribbon cable for keyboards such as crkbd or kyria

Supermanuu/BatterySwitcher
Bettery switching PCB for wireless Pro-micro based Sofle keyboards