It basically uses a cheap laser module to paint greyscale redscale bitmaps on a wall or other suitable screen. To reveal the image you must use an SLR camera to take a long-exposure of the projected area the above image link shows this mechanism projecting the famous arduino infinity logo.
There's a couple of videos on there and some more pictures to follow soon once I've got all the bugs out.
Sorry, link problem fixed, apparently my name has a swearword in it which was being replaced by "darn" and thus breaking the URL. Nice forum software you have here
Interesting project.
I've been experimenting on something similar that hasn't born fruit yet. Main trouble being that I insist on using a single XY-mirror.
I know itsn't your aim but have you tried vector graphics instead of bitmap?
No, not yet. I suspect that it will be less successful than bitmapping because cheap servos are not very accurate when trying to hit a given spot repeatedly. I will probably try it at some point though.
