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Make Yourself a Low-cost “Surface”


“A Multitouch Biggie, MTbiggie for short, is a low-cost multitouch table. It can be used for a variety of purposes including: drawing, OS navigation, games, entertainment and more.

I created the Multitouch Biggie to show people how something that seems complicated or ‘magical’ can be made simply and at low cost.

The MTbiggie uses the “Front Diffused Illumination” multitouch technique, with ambient infrared light and a DIY infrared webcam. The MTbiggie is similar to the MTmini, but includes a projected image and infrared webcam (rather than a normal webcam).

The MTbiggie isn’t the most stable and robust setup, but it is the easiest to build. To see other methods of building more stable multitouch displays, view the full multitouch display list.

Parts List

  • 2 chairs (or anything to prop up the acrylic)
  • Piece of clear, flat sturdy material (ie. glass, acrylic, plexiglas)
  • Projection material (ie. printer paper, tracing paper, rosco projection material, etc)
  • Infrared webcam/camera
  • Computer (dual core recommended, but not required)
  • Projector
  • Mirror

Total Cost: $400 (using low end projector) – $1000+ (using high end projector) – not counting the computer.”

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