This post will describe the electronics I used to drive and control the LEDs for my element display. These were designed by my good friend and very skilled electrical engineer Bill Porter (www.billporter.info) and built by him and myself. To read about the project as a whole, see the introductory post.
I’m not an electrical engineer, but I will try to describe what I can here. Bill has a much deeper knowledge of this sort of thing, and has posted a much more in-depth article about how all this works on his website, which he has dubbed the Elemental Illuminator.