Doepfer FP5 Foot Controller

Pin out of the stereo jack plug: left (ccw) terminal of the potentiometer = GND terminal of the jack plug middle terminal (wiper) of the potentiometers = ring of the jack plug right (cw) terminal of the potentiometer = tip of the jack plug

Pay attention that not the full rotating angle of the potentiometer is covered but only about 50%. If the end terminals of the potentiometer are e.g. connected to GND and +5V only a voltage range 0...+2.5V is covered ! Of course the foot control inputs of our keyboards take this special behaviour into consideration but e.g. for DIY/OEM applications one has to pay attention to the limited rotating angle.