Hmmm... Should this be flagged for moderation?
If you have a question then please post it here and not on an external site
You also might like to check the title of this topic as it does not match that of the external link
Does the backlight work? Do you see a line of boxes in the top row?
Have you tried adjusting the contrast pot? If you don't have a contrast pot, connect the Vo (LCD pin 3) to ground. What happens?
The code in the stackoverflow post works on my Uno with 1602 LCD.