void setup() {
 Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(14, OUTPUT);
  pinMode(16, OUTPUT);
  pinMode(19, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(17, OUTPUT);
  pinMode(18, OUTPUT);
}

void loop() {
digitalWrite(18, HIGH);
digitalWrite(12, HIGH);
delay(1000);
digitalWrite(18, LOW);
digitalWrite(12, LOW);
delay(1000);
digitalWrite(16, HIGH);
digitalWrite(17, HIGH);
delay(1000);
digitalWrite(16, LOW);
digitalWrite(17, LOW);
delay(1000);
digitalWrite(19, HIGH);
digitalWrite(18, HIGH);
delay(1000);
digitalWrite(19, LOW);
digitalWrite(18, LOW);
delay(1000);
}