I am using BaseCamBGC Pro board, and I can successfully control ROLL, PITCH and YAW with analog inputs AN1, AN2 and AN3. On the BaseCamBGC Pro Interface Board, there is a 4th analog input (AN4). However, on the GUI, AN4 is not an option for any of the motor controls. In fact, I could not see any reference to AN4 in the GUI nor manual.
My question is: can I use AN4 as an analog input to control YAW, ROLL or PITCH?
I have not looked into that, but is the 4th analog port available anywhere in GUI? Maybe on Adjustable variables tab, and then you could connect it there.
Anyway, unless you put the potentiometers close to the board, I would advice using Serial API or SBUS for connecting joystick. Long analog wires should be at least shielded.