#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);
int d;
float c,inch;
void setup() {
  pinMode(13, OUTPUT);
  pinMode(12, INPUT);
  

}

void loop() {
   digitalWrite(13, LOW);
   delayMicroseconds(2);  
   digitalWrite(13, HIGH);
   delayMicroseconds(5);
   digitalWrite(13, LOW);
   d=pulseIn(12,HIGH);
   c=d*0.034/2;
   c=c+0.50;
   inch=d*0.0133/2;
   

  lcd.init();
  lcd.backlight(); 
  lcd.setCursor(0,0);
  lcd.print("CM: ");
  lcd.print(c);
  delay(10);
  lcd.setCursor(0,1);
  lcd.print("INCH: ");
  lcd.print(inch);
  delay(10);
  
}