Rotary Switch Potentiometer Hookup Guide

Contributors: Byron J.
Favorited Favorite 16


The Rotary Switch Potentiometer is a board that allows you to add some resistors to our one of our 10-position rotary switches, turning it into a potentiometer with ten discrete steps.

Rotary Switch Potentiometer

If you're wondering why a potentiometer with ten steps would be useful, keep reading! We've got a couple of examples that illustrate applications where this board is more useful than a regular, continuous potentiometer.

In This Tutorial

We'll start by examining what a potentiometer is, and a couple of common circuits built from them. We'll then proceed to build a couple of example projects: one using a microcontroller, and another using the board in an analog demonstration.


We'll cover several different examples in this hookup guide, all built from the same basic parts. If you want to follow along, you'll need these components:

Suggested Reading

  • Our Voltage Dividers tutorial introduces one of the circuits commonly built using potentiometers.
  • The Sound Detector Hookup Guide explains how to use and configure the Sound Detector.
  • Potentiometers are a type of Resistor.
  • The article The Secret Life of Pots describes the internal mechanisms of a potentiometer, and explores some of the more esoteric varieties.
  • The Wikipedia article about decibels contains some relevant background information.