#include <Servo.h>

Servo myservo; // create servo object to control a servo
int pos = 0;    // variable to store the servo position
int ledPin = 13; // Pin for the LED

void setup() {
  myservo.attach(9); // attaches the servo on pin 9 to the servo object
  pinMode(ledPin, OUTPUT); // set the LED pin as an output
}

void loop() {
  // Sweep from 0 degrees to 180 degrees
  for (pos = 0; pos <= 180; pos += 1) {
    myservo.write(pos); // tell servo to go to position in variable 'pos'
    delay(15);           // waits 15ms for the servo to reach the position
  }

  digitalWrite(ledPin, HIGH); // Turn on the LED when servo is ON
 
  // Sweep from 180 degrees to 0 degrees
  for (pos = 180; pos >= 0; pos -= 1) {
    myservo.write(pos); // tell servo to go to position in variable 'pos'
    delay(15);           // waits 15ms for the servo to reach the position
  }

  digitalWrite(ledPin, LOW); // Turn off the LED when servo is OFF
  
}