Graffiti Research Lab, is an art group dedicated to outfitting graffiti writers and artists with open source technologies for urban communication. The members of the group experiment in a lab and in the field to develop and test a range of experimental technologies. They document those efforts with video documentation and Do-It- Yourself instructions for each project and make it available for everybody.
source: Wikipedia
http://graffitiresearchlab.com/
Tags: light, media art, projection, public space