#include <LiquidCrystal_I2C.h>

 LiquidCrystal_I2C lcd(0x27, 16, 2);  
 int val = 0 ;  
 void setup()  
 {  
   Serial.begin(9600);  
   lcd.init();      
   lcd.backlight();  
   pinMode(2,INPUT);   // LDR sensor output pin connected to D2  
   pinMode(12,OUTPUT);  // Relay Module Pin connected to D12  
   digitalWrite(12,HIGH); // Relay Module Normaly High  
 }  
 void loop()   
 {  
  val = digitalRead(2); // LDR sensor output pin connected  
  Serial.println(val);  // see the value in serial mpnitor in Arduino IDE  
  delay(100);  
  if(val == 0 )  
   {  
    digitalWrite(12,LOW);   // Relay ON  
    lcd.setCursor(0,0);  
    lcd.print(" Evening Time    ");  
    lcd.setCursor(0,1);  
    lcd.print("  Bulb ON      ");  
   }  
  else  
   {  
    digitalWrite(12,HIGH);  // Relay OFF  
    lcd.setCursor(0,0);  
    lcd.print(" Morning Time    ");  
    lcd.setCursor(0,1);  
    lcd.print("  Bulb OFF      ");  
   }  
  }