int echopin = 5;
int trigpin =15;
int Time;
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:
  digitalWrite(trigpin, LOW);
  digitalWrite(trigpin, HIGH);
  digitalWrite(trigpin, LOW);
  Time =pulseIn(echopin,HIGH);
  
  Distance= Time * 0.034/2;//formula for Distancetance 
  Serial.println(Distance);
  // if (Distance>30){
  //   digitalWrite(LED1, LOW); 
  // }

  // else{
  //   digitalWrite(LED1, HIGH); 

  // }
}