"Another reason not to use the motor-interlock/emergency stop feature is the of the pilot's usage of an APM2.6/2.8 board.
These features are not compatible with these versions of APM, if anyone has managed to overcome this, I would accept that as a…"
"I think a solution in combination with both of your proposals would be perfect.
Does anyone know of any cheap 1 channel radio receiver?
or actually, you could just use an existing channel on the quads receiver and monitor the PWM cycle and finally…"