//YWROBOT
//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include <LCD_I2C.h>
#include<Wire.h>

int btn = A2  ;
int B=0;
LCD_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display


void setup()
{
 pinMode (btn,INPUT_PULLUP);
 Serial.begin(9600);
 lcd.begin();
}


void loop()

{
  
   B = digitalRead(btn);
   Serial.println(B);
  if (B == 1){
    
lcd.backlight();


}

  if  (B ==0){
  
  
  lcd. clear();
  lcd.noBacklight();
}
}