#include  "Servo.h"
Servo servo; // กำหนดให้ servo ชื่อ servo

//กำหนดชื่อให้หลอด LED 
int ledred = 3;
int ledyellow = 4;
int ledgreen = 5;

void setup() {
  //กำหนด pin ให้หลอด LED
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  
  // put your setup code here, to run once:
  servo.attach(9);
}

void loop() {
// put your main code here, to run repeatedly:
  servo.write(0);
  digitalWrite(3, 1);
  digitalWrite(4, 0);
  digitalWrite(5, 0);
  delay(1000);
  
  servo.write(90);
  digitalWrite(3, 0);
  digitalWrite(4, 1);
  digitalWrite(5, 0);
  delay(1000);

  servo.write(180);
  digitalWrite(3, 0);
  digitalWrite(4, 0);
  digitalWrite(5, 1);
  delay(1000);
}


//delay(1000) = 1 วินาที
//delay(60000) = 60 วินาที = 1 นาที