Cheap DIY whiteboard demo reel





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Published on Oct 18, 2010

Do it yourself method of building your own interactive whiteboard. The software uses the TUIO protocol to get the information on where the light pen is active. The rest just controls the mouse cursor (left clicks only).

I focused on controlling presentations and brain storming. The software supports annotating the current screen contents and storing that to an image file. For the rest, the software is open source so feel free to expand upon it.

I used a Playstation 3 camera (PS 3 eye) that I converted so that it could see infrared. I put a layer of exposed film over it so visible light is reduced as much as possible. As a result, a infrared LED soldered to a battery is all I need to control the mouse cursor. Info on how to make your own light pen and how to convert your PS3 eye can be found in the NUI group forums (and on many other places on the web): http://nuigroup.com/forums/.

The computer vision processing can be done with a Wiiremote but I chose to use a simple webcam (the PS3 eye) in stead. Install Computer Core Vision (CCV) and use it to send TUIO messages to the whiteboard application. CCV also facilitates the calibration method in a much more accurate way that I could easily implement myself. Download CCV here: http://ccv.nuigroup.com/.

The code and runnable JAR is available on google code: http://code.google.com/p/tuio-whitebo...

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    • Smoke & Mirrors
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    • UMG (on behalf of Geffen); BMG Rights Management, Wixen Music Publishing, AMRA, and 5 Music Rights Societies


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