int tig=27;
int echo=26;
int distance;




void setup() {
  pinMode(tig, OUTPUT);
  pinMode(echo, INPUT);
  Serial.begin(115200);
}

void loop() {
  
  digitalWrite(tig, HIGH);
  delay(100);
  digitalWrite(tig, LOW);
  int reading=pulseIn(echo,HIGH);
  distance = (reading*0.034/2+1);
  Serial.println(distance);
}