#define LED 13  // The pin the LED is connected to
#define BUZ 12  // The pin the LED is connected to
void setup() {
  pinMode(LED, OUTPUT); // Declare the LED as an output
  pinMode(BUZ, OUTPUT); // Declare the LED as an output
}

void loop() {
  digitalWrite(LED, HIGH); // Turn the LED on
  tone(BUZ, 1000); // Send 1KHz sound signal...
  delay(1000);
  digitalWrite(LED, LOW); // Turn the LED on
  noTone(BUZ);     // Stop sound...
  delay(1000);

}