Ok first of I don't need it for the trakball because I grabed the one from my Happ optical rotary joystick and it worked fine.
But that means I need one for the joystick, so does anyone know where I could get one somewhere in the UK.
If you don't know what I am after its the little green pcb board with the pots on.
If I can't buy them could I build one my self, looking at the one on my oscar spinners there seem easy to make.
Can anyone help.