I'm having an issue where the APM is causing the aileron controls to also move the rudder. The problem does not happen in the first 30 seconds of so after powering the board, but after about 30 seconds, something flickers around with the electronics and then all of a sudden when I move the control for the aileron the rudder will move too.
I made a video.
Are you sure you haven't set it to elevon mode? If not, reload the code, and do a RC setup again.
I've never seen that before.
Set the rudder mix parameter to zero. If the behavior you are seeing goes away with that set to zero then the behavior you are seeing is normal.
Awesome. This worked. Thanks.