I'm currently experimenting with a DMX controllable laser from djtraximus. You can select multiple patterns and set scanning speed via DMX, plus - to an extent - set the XY position of the beam. I'll post some more information, together with a Max/MSP patch, here when I've finished my experiments.
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Sean Clark will be contributing live video to the Bathysphere stage at Summer Sundae in Leicester this year. Watch out for the fringe festival too...
Sean Clark will be running an enhanced version of his 'Video/Laser Installation' at the Shambala Festival from the 21st to 24th August 2008.