Just got the APM2 and am beginning my Octocopter build.
I decided to separate the Rx/APM2 power feed from the ESC/Motor feed,
just to discover I might have a wiring issue. So here goes (see attached image, Yellow Squares):
1. To eliminate the power from the ESC on the PWM outputs of the APM2,
I plan to cut BOTH the RED & BLACK wires, leaving only the WHITE Signal
wires going respectively from outputs 1-8 to the ESCs.
2. Separately, the UBEC supplies 5V to the Rx/APM2 combo via the Power hooks
on pin 1 of the PWM/Output rail.
Q1: Can I do this, or must I leave the BLACK wire connected?
Q2: If the BLACK ESC wires need to stay connected to the APM2, How can the UBEC connect?