#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd (0x27 , 16 , 2);

  
# define trig 2
# define echo 3

int led1 = 13;

void setup(){

lcd.begin(16,2);
lcd.backlight();
lcd.setCursor(2,0);
lcd.print("DIGITAL RULER");
delay(1000);
lcd.clear();
lcd.setCursor(5,1);
lcd.print("ARDUINO");
delay(1000);
lcd.clear();
pinMode(trig,OUTPUT);
pinMode(echo,INPUT);


}

void loop(){
digitalWrite(trig,LOW);
delayMicroseconds(2);
digitalWrite(trig,HIGH);  
delayMicroseconds(10);
digitalWrite(trig,LOW);


long time = pulseIn (echo,HIGH);

long inches = time  / 74 / 2;
long cm = time  / 29 / 2;

lcd.setCursor(0,0);
lcd.print("distance:");
lcd.print(cm );
Serial.println("cm");

lcd.setCursor(0,1);
lcd.print("distance:");
lcd.print(inches);
  

 
  
}