Automatic Light Graffiti Laser Fixture Development

automatic light graffiti fixtureLight Graffiti is an art form that I’m a big fan of, and that’s been discussed here numerous times. If you’ve been following my work for quite a while, you might recognize the setup seen above, where a laser is mounted on a pan/tilt assembly. This laser is then moved and turned on and off in sequence to draw the simple image shown on a computer screen.

Unless you’ve been following my projects for quite a while, the sequence of events that led me to this contraption wouldn’t be easy to understand. To help explain everything, here’s my automatic light graffiti video. It takes you from the very basics of my light graffiti journey to a device that can draw an image by itself.

As neat as that is, these techniques, I think could be taken much further. Perhaps painting an entire building would be possible with the right laser setup, or maybe it could be combined with some other experimental camera setup. Who knows?

After posting this on Reddit, I found that I wasn’t the only one with an automatic light graffiti setup. YouTube user “devicer’s” setup is much larger, and while mine draws individual pixels (Xs are formed by crossing four servo positions), his sweeps from point to point with the laser on.

Probably a good illustration of the difference between bitmapped (mine) and vecotor (devicer’s) images.

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