void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(2,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(12,OUTPUT);
  pinMode(13,OUTPUT);
  pinMode(14,OUTPUT);
  pinMode(18,OUTPUT);
  pinMode(25,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  digitalWrite(18, HIGH);
  delay(300);
  digitalWrite(18, LOW);
  digitalWrite(25, HIGH);
  delay(300);
  digitalWrite(25, LOW);
  digitalWrite(2, HIGH);
  delay(300);
  digitalWrite(2, LOW);
  digitalWrite(14, HIGH);
  delay(300);
  digitalWrite(14, LOW);
  digitalWrite(4, HIGH);
  delay(300);
  digitalWrite(4, LOW);
  digitalWrite(13, HIGH);
  delay(300);
  digitalWrite(13, LOW);
  digitalWrite(5, HIGH);
  delay(300);
  digitalWrite(5, LOW);
  digitalWrite(12, HIGH);
  delay(300);
  digitalWrite(12, LOW);
}