The light is intended to operate from alkaline batteries to reduce the total cost. It can be programmed via USB, whether to load images or to change the programmed operation. Operating modes include acceleromer, whch is great for operating by hand, inductive sensor, for using a metal object as a trigger (such as on a bike), or reed switch, such as for pendulums.
We also made an open source image converter to convert bitmaps to files for the hardware. Novice users can easily change the image, and expert users can change everything about the operation, if desired. The first image in the thumbnails is "8 bit plumber", generated using our converter software.