On my LED Array, I can use the number pad and get every number to scroll across the array and it'll look great. But when I send letters, all it sends is a "?" or if I type a sentence it'll be "------?". I'm not sure how to use the C programming yet because my goal right now is just to learn some of the basics of the kit. I can't figure out why letters won't work.

Any ideas?

This is probably happening because the LED Array as coded only recognizes capital letters. If it gets a character it does not recognize (like a lower case letter) it just prints a ?.

Humberto

Actually just realized that if I put caps lock on, it works. I'm guessing there was a misscommunication between the lowercase letters.

Thanks Humberto!