4 layers119 × 63.2 mm

OpenChordM1
FugLong/OpenChord
An open-source music device for portable, expressive, and extensible audio creation.
75 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.

FugLong/OpenChord
An open-source music device for portable, expressive, and extensible audio creation.