LAYZOR!!! is a laser light show projector made with scrounged parts and designs and software from the Web.

LAYZOR!!! uses a USB 5.1-channel sound card as a DAC to generate signals to a set of galvanometers, which deflect a laser signal in X & Y to draw animations on a screen.

The software I'm using is called OpenLase, by Héctor Martín Cantero (a/k/a marcan). He describes it on his blog.