Thanks for the reply, I'll have to check out those XBees, sounds like they would do the trick. As far as switching to PPM, the gimbal is a DJI and they only support control through SBUS right now per their firmware on the gimbal. I really wish they would open up the ability to use the internal USB bus that they have in the gimbal. It has 3 USB ports on the camera arm used for camera start/stop and for powering their raveneye wifi video transmission, but it seems we are locked out of pushing any sort of signal through those USB ports. If I could, this build would be a million times simpler... Just pump in SBUS to the pins on the gimbal handle and send the unused ones through the built in USB up to where the camera sits.