const int trigPin = 10;
const int echoPin = 9 ;
const int BUZZ_PIN = 8 ;

long duration;
int distance;


void setup() {
  // put your setup code here, to run once:
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  Serial.begin(9600);
  pinMode(BUZZ_PIN,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin,LOW);

  duration = pulseIn(echoPin,HIGH);
  distance = duration*0.034/2;
if (distance <= 50){
  digitalWrite(BUZZ_PIN,HIGH);
  Serial.println("You are to close");
  delay(100);
}
  Serial.print("Distance: ");
  Serial.println(distance);
  delay(1000);

}