void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32-S2!");
  pinMode(12,OUTPUT);
  pinMode(13,OUTPUT);
  pinMode(14,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(12, HIGH);
  digitalWrite(13, LOW);
  digitalWrite(14, LOW);

  // Wait for 1 second
  delay(1000);

  // Turn on LED2 and turn off the other LEDs
  digitalWrite(12, LOW);
  digitalWrite(13, HIGH);
  digitalWrite(14, LOW);

  // Wait for 1 second
  delay(1000);

  // Turn on LED3 and turn off the other LEDs
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  digitalWrite(14, HIGH);

  // Wait for 1 second
  delay(1000);
}