#include "NewPing.h"
#include <LiquidCrystal.h>

int trig = 8;
int echo = 9;
int maxdis = 400;
NewPing sonar(trig,echo,maxdis);
LiquidCrystal lcd(12,11,2,3,4,5);
float duration,distance;
int iterations = 5;
    
void setup(){
  Serial.begin(9600);
  lcd.begin(16,2);
  analogWrite(6,100);
}

void loop(){

  //Measure the response
  duration = sonar.ping_median(iterations);
  //Determine distance from duration
  distance = (duration/2)*0.0343; //Divide 2 and Multiply the speed of sound

//Send results to Serial
  Serial.print("Distance= ");
  if (distance >= 400 || distance <= 2){
    Serial.println("Out of range");

    }
  else {
    Serial.print(distance);//print the value in LCD
    Serial.println(" cm");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Distance : ");
    lcd.setCursor(0,1);
    lcd.print(distance);
    lcd.setCursor(6,1);
    lcd.print("CM");
    
    }
delay(500);  
}