Gijs Gieskes beautiful spinning photoelectronic acid machine

The first few minutes of this great clip are a bit warble-warble blah-blah, but about 2 minutes in it kicks off into crazy acid noise. Full details of the box are on Gijs' site, including a PHP tool to design and print spinning disks according to the frequencies you've chosen. Love the highres pics of the box, complete with a hand-drawn, hand-etched circuit board...