I little universal ESP-M3 carrier board
At some point... I should figure out this github stuff & clean this up.
But for now, esp-m3.lib, esp-m3.dcm & foo.kicad_mod are the symbol & footprint for the ESP-M3 module. Symbol provided by Geekboy1011 on the AddOhms discord. The footprint is roughly based on his design too... (But I used his footprint to figure out how to build a new one that actually worked a bit better.)
J1 & J2 are just for power. & laid out for any of 3 options. USB micro jack, direct connection or my favourite Chinese breakout board.
J3 is actually compatible with the pin header on most Sonoff devices (if you ignore pins 5 & 6.
If you use pins 5 & 6, you can make it act like a D1-mini when flashing firmware.