So after you have a working LED matrix, you can't stop there. Otherwise you just have a big display running strandtest and that frankly just sucks.
This is an awful lot of fun, with just a few lines of code you can get some great effects really quickly. Its even become part of our front-end programmer test at Supplyframe!
Here's a video:
And here's some photos:
First up, pulsing colored lights with additive blending:
Next, the 'green meanie' plasma:
No demo would be complete without a mandlebrot zoomer!
Next up some blobs:
And of course your classic 3d textured tunnel:
A spinny cube!
Inside another cube!
And a nice simple palette based plasma: