void setup()
{
  Serial.begin(115200);
  pinMode(12, OUTPUT);
  pinMode(27, OUTPUT);
  pinMode(26, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(19, OUTPUT);
}

void loop()
{
  digitalWrite(27, HIGH);
  digitalWrite(18, HIGH);
  Serial.println("Led ON");
  delay(1000);
  digitalWrite(27, HIGH);
  digitalWrite(18, HIGH);
  Serial.println("Led OFF");
  delay(1000);
}