(but still kinda cool)
So I come across this project featured on Hack A Day and think: "hey, that's just what I need for a project of mine that uses lasers!"
I check out the website and see that the software has been made available, and download it. But I couldn't get it to work (Windows  was bugging about some missing files or something, also my antivirus software wouldn't stop bugging me about it). That was a downer. But I see that the audio file used in the demo shown on the website (via YouTube) was also available, so I download it, and run it through my laser rig.
The results were somewhat disapointing:
First let me show you what I was using. This is some kind of X/Y laser optics rig I found on eBay. It's essentially a couple of mirrors in an X/Y configration on voice coils with magnets behind them.
(by the way, if anybody has seen this particular device or one similar and know what it was specifically used for or pulled from, drop me a line!)
...And now for the results:
yeah, it KINDA looks like the umbrella logo of the Garoa Hackerspace as featured on (and provided by) DALPIX.COM.
Those are the best pictures I took, that look the most like what it should really look like. Seeing it in action, in person, it looks more like a wild scribble. The best I can think of is that the galvo rig just wasn't designed for that kind of precision, or at least with audio as a source. There is no feed-back system to report positioning for accuracy, so it just draws blindly according to the input signals. Also, it seems it just can't move as fast as it needs to properly represent it's source.
this setup wasn't ideal as I just threw it together and hoped that nothing moved while taking pictures or recording video. and after I was done with all that, I realize my optics were all dusty. So yeah, it looks better in person, and it could have looked a lot better overall.
. . .while I had it all hooked up, I thought I'd play a song through it that I found particularly nice to look at: