Hello,
I am encountering a strange error with my LCD screen. It is 16x2 characters. I have it all wired up correctly, and the backlight goes on. But only the top 8 on the right hand side and the lower 8 on the right hand side go on. I am using the HelloWorld tutorial from the Arduino website. Please help! Thanks. Also, I am using an Arduino Uno, if that helps in any way.