Yes! the first part is spot on.
It's a Futaba T8J.
The XY control is like I said. Asssuming X control only (cuz not enough knobs) I'll rotate the knob >> mixer >> Servos will tilt >> Quadrotor will move in X direction. But like you said it's not part of the problem. That is dealt in the mixer and I know what to do.
This looks the solution I needed!! Thank you so much.
I'll try this when I can but I'll ask part 2 of my question now that we are on the subject.
So assume now that instead of using button/knob in the RC I want to use the right joystick (wich is normally used for Roll/Pitch). This is because if this works well I will have no need to send Roll/Pitch input signals from the RC, i.e. they will always be zero. However the controller needs to know it's always zero to perform automatic stabilization.
Idk if this made any sense so I'll try and explain in a different way.
Imagine my RC has 3 joysticks 1 - Thrust/Yaw, 2-Roll/Pitch (up to this point its a normal RC) and 3 - X/Y (once again ignore all the position control etc. It's 2 signals [-1,1] and all the hard weird part is done in the mixer). If I had this RC, the way I want things set up Joystick #2 is always centered, i.e. 0.0. and I will only use joystick 3.
So since #2 is always centered, is there a way (in a normal RC) to use the right joystick as joystick #3?
Anyways thanks again, and if that doesn't work your solution will have to do as I don't have much time before my projects presentation. It was still a great help