Resistive Touchscreens Touch screen used as potentiometer with led No Comments The touch screen module bought at dealextreme works as a potentiometer by moving your finger across the surface of the module. The module is 4-wire type. I put + and – on the two outer wires… Blog this! Digg this post Recommend on Facebook share via Reddit Share with Stumblers Tweet about it Subscribe to the comments on this post Previous Post Next Post You may also like What Is A TFT Touch Screen? How do resistive touchscreens work? Raspberry Pi LCD Touchscreen Calibration Leave a Reply Cancel replyYou must be logged in to post a comment.