Servo Motors with Arduino: The Complete Guide

A Servo Motor is a precision motor that can rotate to a specific angle (0-180 degrees for standard servos). They are used everywhere: robotic arms, RC cars, camera gimbals, and more.

How Servos Work

Servos use a PWM (Pulse Width Modulation) signal to determine their position.

• A 1ms pulse = 0 degrees
• A 1.5ms pulse = 90 degrees (center)
• A 2ms pulse = 180 degrees

The Arduino Servo library handles all this for you!

Wiring

| Servo Wire | Arduino Pin | | :--- | :--- | | Brown/Black (GND) | GND | | Red (VCC) | 5V (or external for high-torque) | | Orange/Yellow (Signal) | Any PWM pin (e.g., D9) |

Basic Code

```cpp #include <Servo.h> Servo myServo;

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

void loop() { myServo.write(0); // Go to 0 degrees delay(1000); myServo.write(90); // Go to 90 degrees delay(1000); myServo.write(180); // Go to 180 degrees delay(1000); } ```

Types of Servos

• SG90: Micro servo, low torque, great for beginners.
• MG996R: Metal gears, high torque, for robotic arms.
• Continuous Rotation Servos: Spin 360 degrees (used in wheels).

Our Projects Using Servos

• Servo Motor Control Using Arduino