//Ultra sonic sensor program
const int trigPin = 13;
const int echoPin = 12;
long duration;
int distance;
void setup() {
  // put your setup code here, to run once:
 pinMode(trigPin,OUTPUT);
 pinMode(echoPin,INPUT);
 Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  // this speeds up the simulation
   digitalWrite(trigPin,LOW);
  delayMicroseconds(2);
   digitalWrite(trigPin,HIGH);
   delayMicroseconds(8);
   digitalWrite(trigPin,LOW);
  duration= pulseIn(echoPin,HIGH);
  distance=(duration/2)*(0.034);
 Serial.print("Distance ");
 Serial.print(distance);
 Serial.print("cm");
 delay(500);
}