#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2);
#define trigPin 19 // initilize pin19 for HCSR04 trigger pin
#define echoPin 23 // initilize pin23 for HCSR04 Echo pin

void setup()
{
  lcd.begin (16, 2); // begin LCD
  lcd.init(); // Initialize LCD
  lcd.setCursor(2, 0); // Set the cursor
  // Print a message to the LCD.
  lcd.backlight();
  lcd.print("ASSIGNMENT");
  lcd.setCursor(1, 1);
  lcd.print("   LAB 1 ");
  delay(5000);

  // initialize the lcd
  Serial.begin (115200);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

}


void loop()
{
  lcd.begin(16, 2);
  lcd.clear();
  // text to be dispalyed on the screen
  lcd.setCursor(1, 0);
  lcd.print("DISTANCE :");
  long duration, distance;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = (duration / 2) / 29.1;
    Serial.print(distance);
    lcd.print (distance);
    lcd.print ("cm");
    delay(100);
    Serial.println("cm");
    delay(500);
  
  
 
}