Simple, solid PDB for race quads, no electronics, pure pre-tinned 40z copper.
The whole upper surface is one large copper sheet, and the lower surface is the entire negative sheet. This results in super low resistance from LiPo to ESC.
The copper part of the wires needs to go through the board and should be well soldered on each side.
Pads on the sides bring LiPo voltage to the FC.
Holes are provided to piggyback mount a Pololu or a mini 3A adjustable DC-DC regulator of the DSun type, with pads for output voltage, if needed.
Weight 4.2g thickness 1.1mm holes 30.5×30.5mm.