#define ldr A0
#define LED 10
int data;
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
 pinMode(LED, OUTPUT);
  lcd.init();
  lcd.backlight(); 
  lcd.clear();


}

void loop() {
 data=analogRead(ldr);
 lcd.setCursor(5,0);
 lcd.print(data); 
 delay(500);
 lcd.clear();
  if(data>900)
  {
    digitalWrite(LED,1);
    delay(1000);
  }
  else digitalWrite(LED,0);



}