4 layers25 × 45 mm

KiCad boards from 3 GitHub repositories tagged “input”, the most starred first; open any of them in PCBKit.


Human-Computer-Integration-Lab/RingIO
Hardware (fPCBs & schematics) for UIST 2026's RingIO: An Eyes-Free Smart Ring with Inputs via Touch and Outputs via Touch

sparkfun/SparkFun_Portability_Shield
A small board that adds a display, navigation, logging, and battery management.