Below is the schematic I ended up with from last year’s build of my QAV540G (it might just be some ‘Killer Spaghetti’! 😉 ) The tricky part was figuring out how to get telemetry data from the Pixhawk over to both the Taranis radio and minimosd (plan to cover that in another post).
There was also wiring up the RCCC to switch between the two cameras (GoPro and FPV cam), plus switch the lights on/off. To do that, I made up a custom board using two Pololu 12V step down regulators, one for the 12V cam, and the other for the LED lights.
More details to follow… Update: post on that here