I’d like to share a project that might be of interest to the community.
This project allows you to connect a USB device (gamepad, joystick, wheel, etc) to the buddy box of your RC controller. It can also output mavlink via uart to allow operation with radio modems, etc.
It’s rough but functional now. I was originally going to try to turn this into a product, but I don’t have the time to get this finalized. Maybe it can be useful for someone else. If it gets a lot of interest it might motivate me to develop it more.