Conductive ink and tape can be used to create custom button layouts. Template allocates space for pads that interface with pogo pins. Conductive finger rings aid response reliability.
Device Footprint 197 x 50 mm
PLA
Arduino Pro Micro based
USB C VIN/DOUT
Up to 9 Buttons
A4 Paper Compatible
2025
This device fuctions by bridging gaps in circuits with the finger. As I learned more I realised it is obsoleted by approaches using capacitive touch (measuring the change in capacitance when you touch a circuit) such as:
https://www.spokeboard.com/
© Callum Cooper 2026