#include <LiquidCrystal.h>

// Initialize the library with the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

//defines pins numbers
const int trigPin = 9;
const int echoPing = 10;

//defines variables
long duration;
int distance;



void setup() {

  // Set up the number of columns and rows for the LCD
  lcd.begin(16, 2);

  pinMode(trigPin, OUTPUT); //Sets the trigPin as an Output

  pinMode(echoPing, INPUT); //Sets the echoPin as an Input

  Serial.begin(9600); //Start the serial communication


}

void loop() {
  digitalWrite(trigPin,LOW);

  delayMicroseconds(2);

  //Sets the trigPin on HIGH state for 10 microseconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  //Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPing, HIGH);
  //Calculating the distance
  distance = duration*0.034/2;

  //Display the distance on the LCD
  lcd.clear();
  lcd.setCursor(0,0); //Start printing at the first row
  lcd.print("Distance:");
  lcd.print(distance);
  delay(500);

}