I have been trying to figure this out for a while now with not much luck. I built a retractable landing gear for my hexa and I would like to make it retract through channel 7 or 8.
If I connect the landing gear to the receiver directly, and switch the Ch8 switch on the RC transmitter, the gear retracts as it should. So we know the Transmitter and Receiver as well the gear are set up correctly.
I tried CH7 as well, because I found some posts that it has been dedicated for camera trigger control - but no luck.
Here is what I see. In Mission Planner RC Configuration I can see the input coming from channel 8 properly. I also can see that on the first screen where the Status are with the lots of numbers page. The values on Ch8in change as soon as I flip the switch as it should. However the ch8out never changes from 0. I went to the standard parameters page and I changed CH8 Function from "Disabled" to all of the possible option from that list - and none of them will give me any output on the ch8out.
What am I missing? How can I get standard PPM pulse output on Ch8 which corresponds to the PPM in coming from Channel 8 on the received? I know I can wire around the APM and do it directly - but cmon' that is not really a pretty solution.
I have the APM 2.5 version with the 2.9.1 Arducopter installed.