const int trig = 4;
const int echo = 2;
long duration;
long distance;
void setup() {
// put your setup code here, to run once:
Serial1.begin(115200);
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
}

 void loop() {
  //put your  main  code  here,to run  repeatedly :
  //this speeds up  the  simulation 
 digitalWrite(trig,LOW);
delayMicroseconds(2);
 digitalWrite(trig, HIGH);
delayMicroseconds(10);
 digitalWrite(trig, LOW);
duration = pulseIn(echo, HIGH);
//Serial .printIn (duration );
distance = (duration * 0.034/2) + 1;
Serial1.println("Distance " + String (distance));
delay (1000);
 }