ESP32 - Servo Motor controlled by Potentiometer
This tutorial instructs you how to use ESP32 with servo motor and potentiometer. In detail, the angle of a servo motor is in proportion with the value read from a potentiometer.
Hardware Used In This Tutorial
1 | × | ESP-WROOM-32 Dev Module | |
1 | × | Micro USB Cable | |
1 | × | Servo Motor | |
1 | × | Potentiometer | |
1 | × | Breadboard | |
1 | × | Jumper Wires | |
1 | × | (Optional) DC Power Jack | |
1 | × | (Optional) ESP32 Screw Terminal Adapter |
Or you can buy the following sensor kit:
1 | × | DIYables Sensor Kit 30 types, 69 units |
Introduction to Servo Motor and Potentiometer
We have specific tutorials about servo motor and potentiometer. 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:
- ESP32 - Servo Motor tutorial
- ESP32 - Potentiometer tutorial
Wiring Diagram

This image is created using Fritzing. Click to enlarge image
ESP32 Code
Quick Instructions
- If this is the first time you use ESP32, see how to setup environment for ESP32 on Arduino IDE.
- Do the wiring as above image.
- Connect the ESP32 board to your PC via a micro USB cable
- Open Arduino IDE on your PC.
- Select the right ESP32 board (e.g. ESP32 Dev Module) and COM port.
- On Arduino IDE, Navigate to Tools Manage Libraries

- Type ESP32Servo on the search box, then look for the keypad library by Mark Stanley, Alexander Brevig
- Click Install button to install servo motor library for ESP32.

- Copy the above code and paste it to Arduino IDE.
- Compile and upload code to ESP32 board by clicking Upload button on Arduino IDE

- Open Serial Monitor on Arduino IDE

- Adjust the potentiometer
- See the servo motor's rotation
- See the result on Serial Monitor. It looks like the below:
Line-by-line Code Explanation
The above ESP32 code contains line-by-line explanation. Please read the comments in the code!
Video Tutorial
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