Ultrasonic distance measuring with HC-SR04 and the ESP32 in Arduino

Introduction

This project is for testing purpose and provides a working example to measure the distance in cm with an ultrasonic sensor.

Usage

Just compile and upload the “.ino” file to the board, connect the sensor as shown below and the distance will be be printed in the serial terminal.

Schematic

Components

• HC-SR04
• ESP32 development board
• Arduino