void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(13, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT);
}

void loop() {
 //Serial.println("heloo");
 delay(1000);
 digitalWrite(13, HIGH);
 //delay(500);
 //digitalWrite(13, LOW);
 //delay(500);
 digitalWrite(2, HIGH);
 //delay(500);
 //digitalWrite(2, LOW);
 //delay(500);
 digitalWrite(4, HIGH);
 delay(1000);
 digitalWrite(13, LOW);
 digitalWrite(2, LOW);
 digitalWrite(4, LOW);
  // put your main code here, to run repeatedly:// this speeds up the simulation
}