John Park in the Maker Shed: LoL shield
The LoL Shield is a charlieplexed LED matrix for the Arduino. You can use it to display anything in a 9×14 grid. Scroll text, play games, display images, or anything else you want to do. Please note, this is a shield and requires an Arduino for control. Comes with library and example code to get you started programming Lots of LEDs right away!