2 layers87.6 × 25.4 mm

Pingboard Prototype
PingTechGmbH/PingBoard
Mini keyboard with just four keys for core macros.
23 parts3MIT
Printed circuit boards designed in KiCad and published on GitHub, each with its parts, layers and size, its README and its files; open any of them in PCBKit.

PingTechGmbH/PingBoard
Mini keyboard with just four keys for core macros.