#include <Wire.h>
#include <LiquidCrystal_I2C.h>
int trig = 12;
int echo = 11;
LiquidCrystal_I2C lcd(0x27,16,2);
void setup ()
{

  lcd.init(); 
  lcd.backlight();
  lcd.home();
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
}

void loop()
{
  unsigned long duration;
  int distance;
  digitalWrite(trig, 1);
  delayMicroseconds(5);
  digitalWrite(trig, 0);

  duration = pulseIn(echo, HIGH);
  distance = int(duration / 58);

  lcd.setCursor(2,0); 
  lcd.print(distance); 
  lcd.print("cm  ");
  

}