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

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Replace 0x27 with the address of your I2C LCD module

int upButton = 10;
int downButton = 11;
int selectButton = 12;
unsigned long backlightOffTime = 0;  // Variable to store the time to turn off the backlight

void setup() {
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("....Welcome....");
  pinMode(upButton, INPUT_PULLUP);
  pinMode(downButton, INPUT_PULLUP);
  pinMode(selectButton, INPUT_PULLUP);
}

void loop() {
  // Your main code here

  if (!digitalRead(downButton) || !digitalRead(upButton) || !digitalRead(selectButton)) {
    lcd.backlight();
    backlightOffTime = millis() + 3000;  // Set the time to turn off backlight after 3 seconds
  }

  // Check if it's time to turn off the backlight
  if (millis() >= backlightOffTime) {
    lcd.noBacklight();
  }
}