#define echoPin 2
#define trigPin 3
long duration;
int distance;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration=pulseIn(echoPin,HIGH);
  distance=(duration*0.034/2);
  Serial.print("Distance :");
  Serial.print(distance);
  Serial.println(" cm ");
  delay(1000);

}