Hey guys! I have a question for which I am hoping someone can offer some insight. I have a pixhawk driven Hex that is carrying a nex5 on a three axis gimbal with slipring for 360 degree rotation. Due to limited wiring through the slipring, I only have one set of signal wires to run SBUS to my Alexmos gimbal controller.
What I would really like to have is at least 4 channels running through the pixhawk sbus out in order to control the gimbal. I currently have my ch 8 in/out set to control the gimbal pitch. I set my CH7 in/out as an RC Passthrough to control my shutter on the camera.
I would also like to have a control channel for Yaw, as well as a channel to control gimbal controller modes. My problem is that SBUS out only seems to send out channels 1-8. As it is a hex, my first 6 channels are tied up with ESC motor outputs which only leaves me with channels 7 and 8 to work with. To complicate matters further, I would still like to be able to trigger autotune but I don’t have a channel to trigger it without reconfiguring channel 7 and 8.
I did use a PPM encoder to re-encode the servo outputs from the pixhawk, but it added yet another piece of hardware and also introduced twitches to the pitch control so that didn’t seem to be the best solution.
Does anyone know if there is any way to send channels 8-14 through the SBUS out on a pixhawk or is there a way to switch motors to run on a different set of channels rather than ch1-6? What would be awesome is to just have all 14 of the channels output through the SBUS out port.