Waterloo Labs is at it again, but instead of concocting eyeball-controls for Italian plumbers, its futzing with paintball guns. The team has rigged a trio of the paint-filled firearms to make automated art with a little help from a webcam, Labview software, 3D-printed parts and an awful lot of wiring. What winds up on the canvas is pulled from a 50-pixel by 50-pixel image that is fed into the Labview suite.