Small 1.2" 8x8 Bright Square Pure Green LED Matrix + Backpack SF_Memory Cards * Upright Basic Unit with

* Upright Basic Unit with Insulating Disc

which makes it much more agile than competing robots like the Solarbotics Sumovore and Parallax SumoBotwhile still offering plenty of control

it now has a switch to select power source either from USB or external power

but you cannot turn the output axle with your hand)

micro:Maqueen with micro:Maqueen Mechanic-Push

Small 1.2" 8x8 Bright Square Pure Green LED Matrix + Backpack SF_Memory Cards * Upright Basic Unit withWhat's better than a single LED? Lots of LEDs! Matrices like these are 'multiplexed' so to control 64 LEDs you need 16 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there's a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all, wouldn't it be awesome if you could control a matrix without tons of wiring? That's where these lovely LED