How to Make a Cheap Multitouch Pad - Hardware Thread
Software Thread can be found here: http://nuigroup.com/forums/viewthread/1825/
Multitouch Mini (MTmini) - My Cheap Multitouch Pad
Download MTmini Software Package v1 (includes guide below)
Download Getting Started PDF
What’s a MTmini?
Don’t have a Multitouch Table yet? Have one, but need something smaller for testing? Building a small portable multitouch pad will allow you to test software and experiment on a smaller scale while building your full table or when away from your multitouch screen. Have fun and make a MTmini! This uses Front Diffused Illumination, with normal ambient light (infrared not required or needed) and a normal off-the-shelf webcam (IR filter can still be in place).
-Materials-
-Cardboard 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-
Get MTmini Package v1 here - Includes Touchlib rev (393), demos and getting started instruction guide.
-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!
) Very well documented and hopefully more people will get involved with these easy tutorials, great stuff Cerupcat!
we can’t wait to build one!
