How to Make a Cheap Multitouch Pad

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Introduction: How to Make a Cheap Multitouch Pad




ALL HARDWARE AND SOFTWARE UPDATES WILL BE MADE ON MY BLOG:

http://sethsandler.com/multitouch/mtmini/


What's a MTmini?

A Multitouch Mini, MTmini for short, is a cheap, small, portable multitouch pad. It can be used for all different purposes including: drawing, OS navigation, multitouch operation, games, entertainment, experimentation, and more. I created the Multitouch Mini to show people how something that seems complicated or 'magical' can be made simply and at low cost.

The MTmini uses the "Front Diffused Illumination" multitouch technique, with normal ambient light (infrared not required or needed) and a normal off-the-shelf webcam (IR filter can still be in place). The MTmini technique is the first step in creating a full multitouch display.


-Parts List-

  • Box (ie. Cardboard, Plastic, etc)
  • Piece of Clear, Flat Sturdy Material (ie. Glass, acrylic, plexiglas)
  • Paper (ie. printer paper, tracing paper, almost any paper)
  • Webcam (most web cameras will work)
  • Computer (dual core recommended, but not needed)
  • Optional Picture Frame

Total Cost: $5 - $50



-How's it Work and What Conditions are Necessary?-

When you place your fingers on the surface, shadows are created where your fingers are placed. The webcam sees these shadows and sends the image to the tracking software which tracks the shadows as they move on the touch surface (paper).

All you need is a room with (at least) some light; a dark room will not work. Even room lighting gives the best results. Lights shinning from multiple directions onto the multitouch pad gives better results than lights from one direction.

-More Informatio including Software, Applications and More At-

http://sethsandler.com/multitouch/mtmini/

-Want to Build a Multitouch Surface?-

You can find information on how to make your own multitouch surface by viewing the How to Make a Multitouch Surface page.

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198 Comments

hey can anyone give me the site to download the software real quick i cant get it anywhere.

its nice
tel me can i use it in my ECD labs projct i.e. on touch switch. i am looking for a simple touch. and can it be used with the PCB circuit.
PLEASE ans me

I'm not really sure I understand what you mean. I'd recommend asking on http://nuigroup.com/forums where there's other building multitouch devices.

If you want this to be an Android tablet, no it won't work. This is for desktop computers (windows and osx).

can i use the logitech quickcam go i dont have any other webcam



please reply fast

Yes, it should work.

should work or definitely it works?????

can i use this for my tablet because its touch screen is broken and i cannot find another on to replace




please reply fast

It won't fully replace a tablet, but you can try and see how you like it. If you need help, go to http://nuigroup.com/forums where there's others that are also building them.

Hi uhm... how do i fix this problem? "missing msvcp71.dll" I made it work before but now I don't know what to do. Thanks.