Peggy 2LE provides a quick, easy, powerful, and efficient way to drive a lot of big, bright LEDs — up to 625 — in a matrix. With it, you can make an LED sign for your window, a geeky valentine for your sweetie, one badass birthday card, the next generation of low-pixel-count video games, or even outdoor signs that (as has been shown) can freak the holy bejesus out of the city of Boston. Your call. The display can run off batteries or the included AC adapter, and is designed to drive as many LEDs as you care to solder into its holes, any colors, standard 3mm or 5mm sizes. LEDs not included.