Hello,
I have a small 4 wire resistive touch screen approx. 2" diaogonal. It believe that the outer edge two wires of the FPC cable are "+". Where as the two other wires are the return signals each in respect with their "+" wire. I am applying 3.0VDC at the "+" wires and trying to read the output voltage on the return wires as I move an object pressing on the touch screen.
The problem is, I am reading a steady 3.0VDC on the return wires no matter where I touch on the touch screen.
Has anyone done this before? If anyone can help, it would be very appreciated.
Thanks
R