A few weeks ago I went through one of those drive through Christmas light displays. It had dozens of 10-20ft metal sculpture frames of various designs that were wrapped in lights. On some structures there was very basic programming, certain lights would turn off and on in a sequence to simulate movement, but the basic metal structure had a pre-defined shape. It got me thinking if it would be possible to build a cheap metal structure that's like 20ftx40ft LED wall using chinese WLEDS in a grid, using arduino etc. Basically a giant, cheap, low resolution, display. Anybody seen something like this this?