Hi!

I have a Jetson NX connected to a Pixracer running ardupilot and and a simplebgc gimbal running latest stable release. My goal is to both command the gimbal with the companion computer via mavlink, and read out attitude data from the gimbal imu.

So far, I am successfully controlling the gimbal with the `do_mount_control` mavlink command, as specified in the simplebgc manual. But, I am struggling to read data from the gimbal. So far, I have both tried `set_message_interval` and `request_data_stream` with corresponding component id without any sucess. The weird thing is that I am somehow able to set the gimbal data rate via the mission planner (which I think is using `request_data_stream`, but not "runtime". When I set the gimbal data rate in mission planner, at first only the pixracer imu data rate is changed. But, when I disconnect and reconnect my mission planner, suddenly the gimbal data rate is also changed. Why both changes, I am not sure, since that indicates a broadcast message which the simplebgc manual states the gimbal does not support. I am not sure of what to make of this odd behavior.

Maybe the solution is not imidiately apparent, but I would really appreciate any thoughts on the matter, either from experience or only guesses, which might point my in the right direction.