void setup() {
  Serial.begin(115200);
  pinMode ( 27, OUTPUT);
  pinMode ( 12, OUTPUT);
  pinMode ( 14, OUTPUT);
}

void loop() {
  digitalWrite(27, HIGH);
  delay(1000);
  digitalWrite(27, LOW);
  delay(1000);
  digitalWrite(12, HIGH);
  delay(1000);
  digitalWrite(12, LOW);
  delay(1000);
  digitalWrite(14, HIGH);
  delay(1000);
  digitalWrite(14, LOW);
  delay(1000);
}