The Makeblock ME dial type potentiometer has a knob which can be rotated up to 270 degrees. It can convert rotary motion to an analog input which can be used to control the speed of a mobile robot, the brightness of RGB LEDs, or others.
Key Features:
Note: the voltage indicator starts lighting until the output voltage is up to 1.8V, and the output voltage is bigger, the brighter the blue led indicator light Specification: