2 layers27.1 × 27.1 mm

Sample196 bare
DingoOz/TraceMaker
HardwarePlaygroundE3Pcbrev0.3 with every footprint except U7 (an EasyEDA MP1584 module) and its GND pours removed. Net +VB is the two pads U7.2.
59 parts197GPL-3.0
Open-source boards designed in KiCad by DingoOz on GitHub, from 1 repository. A board’s address here is its repository’s there.

DingoOz/TraceMaker
HardwarePlaygroundE3Pcbrev0.3 with every footprint except U7 (an EasyEDA MP1584 module) and its GND pours removed. Net +VB is the two pads U7.2.