Starter Guide

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Lesson 33 Ultrasonic control DC
motor
Introduction
In this lesson, let’s learn to control the rotational speed with ultrasonic.
Operating steps
1. First, we need to prepare the following experimental materials:
1 * microbit
1 * microbit expansion board
1 * USB cable
1 * ultrasonic module
1 * Motor fan module
- Several Jumper wires
2. Now connect the ultrasonic module and the DC motor module to micro:bit.
connection diagram：