//RAYHAN IZRA FIKRIANSYAH
//2103411030
//2 LED kedip bergantian

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(2, OUTPUT);
  pinMode(15, OUTPUT);
}

void loop() {
  digitalWrite(2, HIGH);                   
  digitalWrite(15, LOW);    
  delay(1000); 

  digitalWrite(2, LOW);                      
  digitalWrite(15, HIGH);    
  delay(1000);                        
}