Servo angle positioning in Arduino

Introduction

Servo angle positioning lets you control the exact angle of a servo motor. This helps move things like robot arms or camera mounts to the right spot.

You want to move a robot arm to pick up an object.

You need to adjust a camera to point at different directions.

You want to open or close a small door or lid automatically.

You want to control the steering of a small robot car.

You want to create a moving display or model with precise angles.

Syntax

Arduino

#include <Servo.h>

Servo myServo;  // create servo object

void setup() {
  myServo.attach(pinNumber);  // attach servo to a pin
}

void loop() {
  myServo.write(angle);  // set servo to angle (0-180)
  delay(time);  // wait for servo to move
}

Use Servo.attach(pinNumber) to connect the servo to a digital pin.

Servo.write(angle) moves the servo to the angle between 0 and 180 degrees.

Examples

This example moves the servo to the middle position (90 degrees) and waits.

Arduino

#include <Servo.h>

Servo myServo;

void setup() {
  myServo.attach(9);  // attach servo to pin 9
}

void loop() {
  myServo.write(90);  // move servo to 90 degrees
  delay(1000);        // wait 1 second
}

This example moves the servo from 0 to 180 degrees in steps of 10 degrees.

Arduino

#include <Servo.h>

Servo myServo;

void setup() {
  myServo.attach(10);
}

void loop() {
  for (int angle = 0; angle <= 180; angle += 10) {
    myServo.write(angle);  // move servo step by step
    delay(500);            // wait half a second
  }
}

Sample Program

This program moves the servo to 0, then 90, then 180 degrees, pausing 1 second at each position.

Arduino

#include <Servo.h>

Servo myServo;

void setup() {
  myServo.attach(9);  // attach servo to pin 9
}

void loop() {
  myServo.write(0);    // move to 0 degrees
  delay(1000);         // wait 1 second
  myServo.write(90);   // move to 90 degrees
  delay(1000);         // wait 1 second
  myServo.write(180);  // move to 180 degrees
  delay(1000);         // wait 1 second
}

Important Notes

Make sure your servo power supply can provide enough current to avoid resets.

Use delays to give the servo time to reach the position before moving again.

Servo angles usually range from 0 to 180 degrees, but check your servo specs.

Summary

Servo angle positioning controls the exact angle of a servo motor.

Use Servo.attach() to connect the servo to a pin.

Use Servo.write(angle) to set the servo angle between 0 and 180 degrees.