const int led=13;
const int buzzerPin=11; 


void setup() {
  pinMode(led, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
}
 
void loop() {
  digitalWrite(led, HIGH);
  delay(100);
  tone(buzzerPin, 150);
  delay(1000);
  noTone(buzzerPin);
  digitalWrite(led, LOW);
  delay(100);
}