// YWROBOT
// Compatible with the Arduino IDE
// Library version:1.1
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);
// set the LCD address to 0x27 for a 16 chars and 2 line display

float cm;
float inches;

//long readUltrasonicDistance( 3,  2)


	// Reads the echo pin, and returns
	// the sound wave travel time in microseconds
//	return pulseIn(echoPin, HIGH);


void setup()
{pinMode(3, OUTPUT);pinMode(2, INPUT);
  Serial.begin(9600);
  lcd.init();	// initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
  lcd.print("--> Distance <--");
	delay(3000);
	lcd.clear();
}

void loop(){	 
	digitalWrite(3, HIGH);
	delayMicroseconds(10);
	digitalWrite(3, LOW);
	cm = 0.0344 *pulseIn(2,HIGH)/2;
	inches = (cm / 2.54);
	lcd.setCursor(0,0);
	lcd.print("Inches");
	lcd.setCursor(12,0);
	lcd.print("cm");
	lcd.setCursor(1,1);
	lcd.print(inches, 1);
	lcd.setCursor(11,1);
	lcd.print(cm, 1);
	delay(2000);
	lcd.clear();
}