Greg designed a small sized 8×8 b-color LED matrix toy that allows doing fun stuff. Device PCB matches the size of LED display. It features MSP430G2201 microcontroller that ensures low power consumption because backpack is powered with CR2032 battery.

Software is written in ASM language and compiled with open source naken430asm compiler. If you want to display some graphics, there is a perl script that allows converting PNG in to sprite image. Greg had fun building this toy so he has plans on doing a second version with some improvements he learned with first run.