1602 LCD I2C DISPLAY

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

// Common default I2C address for many 1602 LCD I2C backpacks.
// If your display does not show text, the address may be different (often 0x27 or 0x3F).
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();

  Serial.begin(9600);
  Serial.println("1602 I2C LCD example starting...");

  lcd.setCursor(0, 0);
  lcd.print("Hello, world!");
  lcd.setCursor(0, 1);
  lcd.print("I2C LCD ready");
}

void loop() {
  // Demonstrate updating the second line with a running counter.
  static unsigned long counter = 0;

  lcd.setCursor(0, 1);
  lcd.print("Count: ");
  lcd.print(counter);
  lcd.print("      "); // Clear any leftover digits

  Serial.print("Count: ");
  Serial.println(counter);

  counter++;
  delay(1000);
}