I am running APM using a separate power source(a 2S lipo) on the aux power lead(unsoldered SJ1 blob jumper). I have realized that if I disconnect power from this connection, I lose all control of the servos.
I that there are 4 serial ports on the ArduPilot Mega. Are any of the ports free? I know one of the them is used for the Xbee connection and I was wondering if I could use a free serial port to communicate the aircraft state(IMU and GPS) to a micr
