int sleepModePin = 4;    
int motionDetectPin = 2; 
int lectura;

void setup() {
   pinMode(12, OUTPUT);
   pinMode(sleepModePin, OUTPUT);
   pinMode(motionDetectPin, INPUT);
   digitalWrite(sleepModePin, HIGH);
}

void loop() {
  lectura = digitalRead(motionDetectPin);
  if(lectura == LOW) {   
    digitalWrite(12, HIGH);
  } else {               
    digitalWrite(12, LOW);
  }
  delay(2000);
}



