void setup() {
  // put your setup code here, to run once. 
  //program yg start ketika awal esp32 ON
 pinMode(5, OUTPUT);
 pinMode(15, INPUT);
 pinMode(18, OUTPUT);
 pinMode(19, OUTPUT);
}

void loop() {  
    if(digitalRead(15) == HIGH)
    {
      digitalWrite(19, HIGH);
      delay(250);
      digitalWrite(19, LOW);
      digitalWrite(18, HIGH);
      delay(250);
      digitalWrite(18, LOW);
      digitalWrite(5, HIGH);
      delay(250);
      digitalWrite(5, LOW);
    }
    else
    {
      digitalWrite(5, LOW);
      digitalWrite(19, LOW);
      digitalWrite(18, LOW);
    }
    delay(250);
   //ada delay, button dilepas tidak langsung mati semua
}