Potentiometer Module


We have 25 units in our Sydney Warehouse available for immediate dispatch.

We can get a further 1000 units in Australia from Little Bird. If you order today, we can dispatch this stock between Jul 09, 2020 - Jul 26, 2020.

This Potentiometer Module is from our Micro:bit 24 bit kit.

You're probably already familiar with using a potentiometer as they are commonly found on many electrical devices, such as in audio equipment where they are used for volume control. After all, potentiometers are sensors! What's a sensor? Simply put, a sensor is a device that receives and responds to a signal.

  • Potentiometers are analog input sensors. 
    • While digital sensors deal with values that are either ‘1’ or ‘0’, analog sensor values are continuous. 
    • Analog sensors are able to tell us not just whether it senses something, but also how much of that something it senses. 
  • In the case of the potentiometer, it measures electric potential, also known as voltage.
  • It has three pins.
    • Two terminals (labelled 'A' and 'B' in the diagram) are connected to a resistive material, while a third terminal is connected to an adjustable wiper (labelled 'W' in the diagram). 
    • The resistance between the two outer terminals is fixed; it is the maximum resistance of the potentiometer.
    • The resistance between the middle terminal and either one of the outer terminals ranges from 0 Ω to the maximum resistance of the potentiometer as the knob is moved.

20K Ohm Rotary Potentiometer Module