int trig=7;
int echo=6;
int timeInMicro;
int distanceInCm;
void setup() {
  // put your setup code here, to run once:
   Serial.begin(9600);
   pinMode(7, OUTPUT);
   pinMode(6, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
   digitalWrite(trig, LOW);
   delayMicroseconds(2);
   digitalWrite(trig, HIGH);
   delayMicroseconds(10);
   digitalWrite(trig, LOW);

   timeInMicro= pulseIn(echo,HIGH);
   distanceInCm=timeInMicro /29 /2;
   Serial.println(distanceInCm);
   delay(100);
}