int trigger_pin=14;
  int echo_pin=26;
  float d;
  void setup (){
    Serial.begin (115200);
    pinMode(echo_pin,INPUT);
    pinMode(trigger_pin, OUTPUT);
  }
int distance (){
  digitalWrite(trigger_pin,LOW);
  delay(10);
  digitalWrite(trigger_pin, HIGH);
  delay(400);
  digitalWrite(trigger_pin,LOW);
  d=pulseIn(echo_pin,HIGH);
  return(d*0.034/2)+1;
  delay(1000);
}
void loop(){
  Serial.println(String (distance()));
  delay (100);//this spped up simclatir
}