Who doesn’t like a good Rube Goldberg contraption? Of his Josh Sheldon writes,

I made this robot to make light painting animations.

Each of the animations I made took between 4 and 12 hours to shoot, one frame at a time. Each frame is 1-3 long exposure photographs of the machine performing the light painting.

Check it out (and if you’re impatient like me, jump ahead ~3 minutes to start seeing the generated artwork):

[YouTube] [Via Marc Pawliger]