void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(19, INPUT);
  digitalWrite(19, HIGH);
  delay(5000);
  digitalWrite(19, LOW);
  pinMode(18,INPUT);
  digitalWrite(18, HIGH);
  delay(5000);
  digitalWrite(18, LOW);
  pinMode(5, INPUT);
  digitalWrite(5, HIGH);
  delay(5000);
  digitalWrite(5, LOW);
  pinMode(17, INPUT);
  digitalWrite(17, HIGH);
  delay(5000);
  digitalWrite(17, LOW);

}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}