#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2); 

void setup() {
Wire.begin(18, 21); 
  lcd.init();      
  lcd.backlight();
}

void loop() {
  lcd.clear();                
  lcd.setCursor(0, 0);        
  lcd.print("Amar, amar, amar");      
  lcd.setCursor(0, 1);         
  lcd.print("siempre, con");       
  delay(2000);                 

  lcd.clear();                 
  lcd.setCursor(2, 0);         
  lcd.print("LCD I2C MODO");  
  lcd.setCursor(6, 1);         
  lcd.print("16x2");           
  delay(2000);                
}