//Costanti
const int LED = 2;
//Variabili
int PIR = 3;
//Codice
void setup() 
{
  pinMode(PIR, INPUT);
  pinMode(LED, OUTPUT);
  Serial.begin(9600);
  Serial.println("Arduino attivato");
}

void loop() 
{
  int statopir = digitalRead(PIR);
  if (statopir == HIGH)
  {
    digitalWrite(LED, HIGH);
    Serial.println("Detected");
  }
  else
  {
    digitalWrite(LED, LOW);
    Serial.println("Not Detected");
  }
}