Potentiometer

The REV Potentiometer (REV-31-1155) converts the angular position of a shaft into an analog voltage signal. A potentiometer acts as an adjustable resistor, fluctuating resistance as the shaft is turned. As the wiper (the knob) moves up and down along the coils of the resistor and the resistance and voltage output change proportionally at each new position.‌

Check out our documentation of the Potentiometer.