Ok, round two in the ratkwad build.
New stack, new motors, success with the first powering of the ESC board.
So I am on to the next steps, rx, tx and camera.
Camera: Foxeer Arrow Pro requires 7v+. Can I solder the positive wire to a V+ pad on the sides?
Smart Audio: where do I connect the wire from the Mach 2 vtx?
Rx: rx6 or rx3 for frsky?