Starter Guide

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Lesson 18 Potentiometer
Introduction
In this lesson, let’s learn how to use the potentiometer.
What is potentiometer?
The potentiometer is actually a variable resistor with three lead-out
segments. The potentiometer is usually composed of a resistor body and a
movable brush. When the brush moves along the resistor body, a resistance
value or voltage that has a certain relationship with the displacement
amount is obtained at the output end.
The potentiometer module used in this experiment
A
Analog output
+
3.3V
-
GND
Operating steps
1. First, we need to prepare the following experimental materials:
1 * microbit
1 * microbit expansion board
1 * USB cable
1 * Potentiomenter