ESP32 - Button - Servo Motor

This tutorial instructs you how to use ESP32 with button and servo motor. In detail, we will learn how to do:

That process is repeated.

Hardware Used In This Tutorial

1×ESP-WROOM-32 Dev Module
1×Micro USB Cable
1×Button
1×Servo Motor
1×Breadboard
n×Jumper Wires
Disclosure: some of these links are affiliate links. We may earn a commission on your purchase at no extra cost to you. We appreciate it.

Introduction to Servo Motor and Button

We have specific tutorials about servo motor and button. Each tutorial contains detailed information and step-by-step instructions about hardware pinout, working principle, wiring connection to ESP32, ESP32 code... Learn more about them at the following links:

Wiring Diagram

wiring diagram between esp32 button servo motor

This image is created using Fritzing. Click to enlarge image

ESP32 Code - Button Controls Servo Motor

Why need to debounce for the button? ⇒ see ESP32 - Button Debounce tutorial

/* * This ESP32 code is created by esp32io.com * * This ESP32 code is released in the public domain * * For more detail (instruction and wiring diagram), visit https://esp32io.com/tutorials/esp32-button-servo-motor */ #include <Servo.h> #include <ezButton.h> #define BUTTON_PIN 21 // ESP32 pin GIOP21 connected to button's pin #define SERVO_PIN 26 // ESP32 pin GIOP26 connected to servo motor's pin ezButton button(BUTTON_PIN); // create ezButton object that attach to pin 7; Servo servo; // create servo object to control a servo // The below are variables, which can be changed int angle = 0; // the current angle of servo motor void setup() { Serial.begin(9600); // initialize serial button.setDebounceTime(50); // set debounce time to 50 milliseconds servo.attach(SERVO_PIN); // attaches the servo on pin 9 to the servo object servo.write(angle); } void loop() { button.loop(); // MUST call the loop() function first if (button.isPressed()) { // change angle of servo motor if (angle == 0) angle = 90; else if (angle == 90) angle = 0; // control servo motor arccoding to the angle Serial.print("The button is pressed => rotate servo to "); Serial.print(angle); Serial.println("°"); servo.write(angle); } }

Quick Instructions

  • If this is the first time you use ESP32, see how to setup environment for ESP32 on Arduino IDE.
  • Install ezButton library. See How To
  • Copy the above code and paste it to Arduino IDE.
  • Compile and upload code to ESP32 board by clicking Upload button on Arduino IDE
  • Press the button several times
  • See the servo motor's rotation

Video Tutorial

Making video is a time-consuming work. If the video tutorial is necessary for your learning, please let us know by subscribing to our YouTube channel , If the demand for video is high, we will make the video tutorial.

※ NOTICES