Section 4.3 - The Ultrasonic Sensor
Throw your ruler away!
In this lesson, you’ll be introduced to the Ultrasonic sensor, learning about both its hardware connections and how to code it using external libraries. First, you’ll explore how the sensor works, with slides explaining how it uses ultrasonic waves to measure distance. You’ll go over the key sensor pins—VCC, GND, Trig, and Echo—and learn what each one does in the process of sending and receiving signals. Then, you’ll use TinkerCAD to wire the sensor to an Arduino, following a guide to ensure accurate connections. Finally, you’ll code the sensor to output distance measurements to the serial monitor, giving you hands-on experience with interpreting sensor data. By the end of this lesson, you’ll have a solid understanding of ultrasonic sensing and how to apply it in projects.