#include "Arduino.h" 
#include "Servo.h" 

// Create a servo object 
Servo myservo; 

// Set the pin where the servo is connected 
int servoPin = 4; 

void setup() 
{ 
	// Attach the servo object to the pin 
	myservo.attach(servoPin); 
} 

void loop() 
{ 
	// Move the servo from 0 to 180 degrees 
	for (int i = 0; i < 180; i++) 
	{ 
		myservo.write(i); 
		delay(15); 
	} 

	// Move the servo from 180 to 0 degrees 
	for (int i = 180; i > 0; i--) 
	{ 
		myservo.write(i); 
		delay(15); 
	} 
}