FPV Stack 30.5 To 20 mm Deck
A 46 mm square, 3.2 mm thick adapter deck that bolts to a frame drilled for the 30.5 x 30.5 mm M3 standoff pattern and carries a 20 x 20 mm M2 flight-controller / ESC stack on four 7 mm posts, lifting it 6.5 mm clear of solder pads and motor wires. A 16 mm centre window passes the battery and ESC leads, two 12 x 3 mm slots take zip ties, and 7 mm scallops in each side edge route wires off the plate; M3 holes are 3.4 mm and M2 bores 2.4 mm so the screws actually drop through.
electronics fpv flight-controller adapter-plate