DIY Marquee LED Array Display

NerdKits - DIY Marquee LED Array Display: "Have you ever wanted to have one of those big scrolling LED displays, to keep you up to date on e-mails, news, weather, or stock quotes? In this video, we'll show you how to build an array of 120 LEDs, how to control them all from one microcontroller, and how to talk to it from your computer."