Here is a project I have been working on for the last two weeks. I precisely embedded 225 LEDs behind a blank canvas with the intention of recreating video with pulse with modulated LEDs! I am using 4 MAX7221 (daisy chained) and an Arduino (3 pins) to drive the matrix. This really tested my hacking abilities, especially because the only tools I had were a drill, soldering iron and wire cutters. Currently, I am able to precisely control ever single LED and run basic patterns on the Canvas. I am still developing this concept, and hope to make it play back live video.
