void setup() {
 pinMode(13, OUTPUT);
 pinMode(12, OUTPUT);
 pinMode(14, OUTPUT);
 delay(1000); // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

void loop() {
 digitalWrite(14, HIGH);
 digitalWrite(12, LOW);
 digitalWrite(13, LOW);
 delay(1000); 
 digitalWrite(13, LOW);
 digitalWrite(12, HIGH);
 digitalWrite(14, LOW);
 delay(1000);
 digitalWrite(13, HIGH);
 digitalWrite(12, LOW);
 digitalWrite(14, LOW);// put your main code here, to run repeatedly:
  delay(1000); // this speeds up the simulation
}