Virtual IoT Lab DEI

Instructions

Objective:

Learn how to control a servo motor using Arduino to create precise angular movements between 0 and 180 degrees.

Steps to Perform:

Click "Start Simulation" to power up the Arduino circuit
The servo motor will begin sweeping motion automatically
Servo rotates from 0° to 180° in 1-degree increments
After reaching 180°, it reverses and sweeps back to 0°
Each movement has a 100ms delay for smooth motion
The sweep cycle repeats continuously

Key Concepts:

Servo Motor: Motor that can rotate to precise angles (0-180°)
Servo Library: Arduino library for easy servo control with Servo.h
Pin 9: Digital pin connected to servo control signal wire
servo.attach(): Connects servo object to specified pin in setup()
servo.write(angle): Positions servo to specified angle in degrees
Sweep Motion: For loops create smooth back-and-forth movement
Delay Control: 100ms delay between steps creates visible motion

Arduino Code - main.ino

            #include <Servo.h>
  
int servoPin = 9;
 
Servo servo;  
 
int angle = 0;   // servo position in degrees
 
void setup()
{
  servo.attach(servoPin);
}
 
 
void loop()
{
  // scan from 0 to 180 degrees
  for(angle = 0; angle < 180; angle++)  
  {                                  
    servo.write(angle);              
    delay(100);                  
  }
  // now scan back from 180 to 0 degrees
  for(angle = 180; angle > 0; angle--)    
  {                                
    servo.write(angle);          
    delay(100);      
  }
} 
            
          