Hi all I have built a quad based on an F450 from from ebay, and it's flying fine. The problem I'm having, is trying to work out a way of controlling the camera! I have a DJCAM SJ4000 on a 3 axis gimbal and have set it to live video over the USB port, and I can get a live feed back. I'm a bit stumped on how to get the live view and also control the camera functions to take photos/video. One method I've thought about and would be particular to this camera would be to use a Raspberry Pi Zero W to send the camera commands over wifi (after pairing with the camera) but connect to the flight controller through the Pi's GPIO pins and run a script on the Pi to read the pins, when the pins are triggered send the appropriate command to the camera. I believe there has already been something similar but using a full Pi. What kind of other setups are being used to get live view and camera control?