int inputPin = D1;              // choose the input pin (for PIR sensor)
int ledPin = D0;                // LED Pin
int piezo = D2;                 // Piezo pin
int val = 0;                    // variable for reading the pin status

void setup()
{
  pinMode( ledPin, OUTPUT );
  pinMode( inputPin, INPUT );     // declare sensor as input
  pinMode( piezo, OUTPUT );
}

void loop()
{
  val = digitalRead(inputPin);
  if (val == HIGH){
    //digitalWrite(piezo, HIGH);
    digitalWrite(ledPin, HIGH);
    delay(1000);
    tone(piezo, 2551, 2000);
    Particle.publish("Intruder")
  }

      digitalWrite(ledPin, LOW);
  delay (2000);
}