Servo Control

Note

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Kit purchase

Looking for parts? Check out our all-in-one kits below — packed with components, beginner-friendly guides, and tons of fun.

../_images/ultimate_sensor_kit.png

Name

Includes Arduino board

PURCHASE LINK

Elite Explorer Kit

Arduino Uno R4 WiFi

BUY

3 in 1 Ultimate Starter Kit

Arduino Uno R4 Minima

BUY

Course Introduction

This Arduino project uses a potentiometer to control a servo motor. As the potentiometer is turned, its analog value is read and mapped to an angle between 0° and 180°, which adjusts the servo’s position accordingly.

The angle and raw value are displayed via serial monitor, making it a simple and interactive demo of analog input to motor control.

Note

If this is your first time working with an Arduino project, we recommend downloading and reviewing the basic materials first.

Required Components

In this project, we need the following components:

SN

COMPONENT INTRODUCTION

QUANTITY

PURCHASE LINK

1

Arduino UNO R4 WIFI

1

BUY

2

USB Type-C cable

1

3

Breadboard

1

BUY

4

Wires

Several

BUY

5

Digital Servo Motor

1

BUY

6

Potentiometer Sensor Module

1

BUY

Wiring

../_images/Servo_Control_bb.png

Common Connections:

  • Digital Servo Motor

    • Connect to breadboard’s positive power bus.

    • Connect to breadboard’s negative power bus.

    • Connect to 3 on the Arduino.

  • Potentiometer Sensor Module

    • OUT: Connect to A0 on the Arduino.

    • GND: Connect to breadboard’s negative power bus.

    • VCC: Connect to breadboard’s red power bus.

Writing the Code

Note

  • You can copy this code into Arduino IDE.

  • Don’t forget to select the board(Arduino UNO R4 Minima/WIFI) and the correct port before clicking the Upload button.

#include <Servo.h>

// Define the potentiometer pin and the servo pin
const int potPin = A0;     // Potentiometer connected to analog pin A0
const int servoPin = 3;    // Servo connected to digital pin 3

// Create a servo object
Servo myServo;

void setup() {
  myServo.attach(servoPin);  // Attach the servo to pin 3
  Serial.begin(9600);        // Start serial communication
}

void loop() {
  int potValue = analogRead(potPin);                // Read analog value (0~1023)
  int angle = map(potValue, 0, 1023, 0, 180);        // Map to servo angle
  myServo.write(angle);                             // Set servo position

  // Debug output
  Serial.print("Potentiometer Value: ");
  Serial.print(potValue);
  Serial.print(" | Servo Angle: ");
  Serial.println(angle);

  delay(15); // Delay to smooth out the signal
}