Countdown from 10 to 0

 #include <Wire.h> 

#include <LiquidCrystal_I2C.h>

// Set the LCD address to the correct value for your LCD

// This address is an example, you need to replace it with the correct address

#define LCD_ADDRESS 0x27

// Set the number of columns and rows on the LCD

#define LCD_COLUMNS 16

#define LCD_ROWS 2

// Initialize the LCD

LiquidCrystal_I2C lcd(LCD_ADDRESS, LCD_COLUMNS, LCD_ROWS);

void setup() {

  // Initialize the LCD

  lcd.begin();

  

  // Turn on the backlight

  lcd.backlight();

  // Print initial message

  lcd.print("Countdown:");

}

void loop() {

  // Countdown from 10 to 0

  for (int i = 10; i >= 0; i--) {

    // Clear the display

    lcd.clear();

    

    // Print countdown value

    lcd.setCursor(0, 1);

    lcd.print(i);

    // Delay for 1 second

    delay(1000);

  }

}