13Ultrasonic Range Finder

In this project we’ll create a simple ultrasonic range finder with a screen that displays the distance of an object up to 5 meters from the sensor.

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PARTS REQUIRED

Arduino board

Breadboard

Jumper wires

HD44780 16x2 LCD screen

HC-SR04 ultrasonic sensor

50k-ohm potentiometer

LIBRARY REQUIRED

LiquidCrystal

HOW IT WORKS

The ultrasonic range finder sends out a burst of ultrasound and listens for the echo that bounces off an object. The Arduino sends out a short pulse on the trigger pin to send the ultrasonic burst, then listens ...

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