· How to Make a Cheap Multitouch Pad

Multitouch Mini (MTmini) - a Cheap Multitouch Pad Website: MTmini discussion thread: Box -Piece of Clear Flat Sturdy Material (ie. Glass, acrylic, plexiglas) -Paper (ie. printer paper, tracing paper, almost any paper) -Webcam or Video Camera (I use a Philips SPC900NC) -Computer (dual core recommended, but not needed) -Optional Picture Frame Total Cost: $5 - $50 -Finger Tracking Software- --------------------------------------------------------------------------- -Touchlib: touchlib to use front illumination xml file. -THERE WILL BE A MAC VERSION OF THE TRACKING SOFTWARE SOON. ALSO A PACKAGED VERSION WITH TRACKING SOFTWARE AND EXAMPLES/DEMOS COMBINED. STAY TUNED! =) -Other Software/Demos- --------------------------------------------------------------------------- -Windows Mousedriver: Demo: Application: soon: -Photo Application -Ripples -Wall Pong Game -Physics Demo -How's it Work and What Conditions are Necessary?- --------------------------------------------------------------------------- For this to work, all you need is a room with (at least) some light. The results will be best when the room lighting is even (no bright lights shinning from one direction onto the multitouch pad). When you place you fingers on the surface, shadows are created where your fingers are. The webcam sees these shadows and sends the image to the tracking software which tracks the shadows as they move around. It's really that simple! For more information, visit: --------------------------------------------------------------------------- - -

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