I have a new APM2 flashed for aircraft use and installed.. Mavlink is working. Radio is calibrated and mode switch are recongnized and working, but no apparent output.. no servo movement or esc armed.
I have a separate Castle Pro BEC set for 5v, plugged to input, (with jumper) but no means to measure actual voltage..
I will buy a voltage tester if there are possible voltage concerns.
ESC has been calibrated and all is working well when plugged directly into reciever.
Ran into this problem today as well. Check your jumper pin. The autopilot will power fine and receive signals, but will not output to the servos if you are powering the board on the input side. If you power via the outputs, your servos should start working. Mine did until everything on the outputs side of the board went dead... hope is didn't short something.
Update.. this unit was previously installed, but not flown in a quad. Perhaps I need to install Aruduplane again.