I have been trying to setup a Tarot Gimbal on a APM 2.6 running 3.2 following the directions at http://copter.ardupilot.com/wiki/common-tarot-gimbal/. I can get tilt to work on RC10 and RC11 but not RC9. I think RC9 is for a relay on APM 2.6, doc was probally Pixhawk specific.
Can some one confirm that RC9 output 0 or 5 volts and is intended for a relay (not PCM)? Maybe the docs need to updated with notes/directions for APM 2.X.