It's amazingly difficult to find information on this subject.
I'd like to control the pitch, roll, and yaw, of my gimbal (Storm32 controller), from the control outputs of a Fatshark Trinity headtracker (mounted in Dominator V3's), using a Pixhawk, Taranis X9D, and X8R receiver.
I do not want to use Mavlink, telemetry, or serial port instructions for the Storm32, as those ports are already overly busy handing the GPS, OSD, etc...so I want to use plain ole RC channels.
The Trinity headtracker outputs control instructions on combinations of channels 4 thru 8...and since Pixhawk uses 1 thru 5 to control throttle, etc, and flight modes, that leaves 6, 7, and 8.
I can not figure out how to get the Pixhawk to pass thru control instractions from the Taranis radio (which originate from the Trinity headtracker via the trainer port input)
Since I have a hexacopter, which occupies channels 1 thru 6 for the motors, I've tried to use 7 and 8 for gimbal control (still needing 1 more for the 3rd channel), and then also tried to use RC9-16.
NO LUCK AT ALL.
I can see in Mission Planner, for example, channel 8, reacting to the radio's input, but the Pixhawk channel 8 output, DOES NOT CHANGE (why?).
Anyone have any ideas on how I can proceed?