#define pi 2

void setup() {
  Serial.begin(9600);
  pinMode(pi, OUTPUT);

  digitalWrite(pi, LOW);
  delay(1000);

}

void loop() {
  digitalWrite(pi, HIGH);
  Serial.println("LIGADO");
  delay(1000);

  digitalWrite(pi, LOW);
  Serial.println("DELIGADO");
  delay(1000);
  

}