#include"NewPing.h"

#include TRIGGER_PIN 9
#include ECHO_PIN 10
#include MAX_DISTANCE 400

NewPing sonar (TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);
// NewPing library will handle the duration

float distance;
int iterations= 5;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  
  //duration= sonar.ping();
  //distance= sonar.pingin();

  distance= sonar.pingcm();

  //distance= sonar.ping_median(iterations);
  
  if (distance>400 || distance<2){
    Serial.println("Out of range !");
  }
  else;
  Serial.print("Distance= ");
  Serial.print(distance);
  Serial.println(" cm");
  
}