#include <Servo.h>     

Servo myservo;         
int angle = 0;         
const int Red = 11, Orange = 12, Green = 13;  

void setup() {
  myservo.attach(9); 
  pinMode(Red, OUTPUT);
  pinMode(Orange, OUTPUT);
  pinMode(Green, OUTPUT);
}

void loop() {


  for (angle = 0; angle <= 180; angle += 1) {

    if (angle == 0) {
      digitalWrite(Red, HIGH);
    } else {
      digitalWrite(Red, LOW);
    }

    if (angle == 90) {
      digitalWrite(Orange, HIGH);
    } else {
      digitalWrite(Orange, LOW);
    }

    if (angle == 180) {
      digitalWrite(Green, HIGH);
    } else {
      digitalWrite(Green, LOW);
    }

    myservo.write(angle);
    delay(10);
  }

  for (angle = 180; angle >= 0; angle -= 1) {

    if (angle == 0) {
      digitalWrite(11, HIGH);
    } else {
      digitalWrite(11, LOW);
    }

    if (angle == 90) {
      digitalWrite(12, HIGH);
    } else {
      digitalWrite(12, LOW);
    }

    if (angle == 180) {
      digitalWrite(13, HIGH);
    } else {
      digitalWrite(13, LOW);
    }

    myservo.write(angle);
    delay(10);
  }
}