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added some parts, and touch factor framing link
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Notes on construction of a internal reflection infrared rear projection touch table.
Notes on construction of a internal reflection infrared rear projection touch table.
+=Infrared LEDs=
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+Using the technique from [http://www.touchfactors.com TouchFactors Lab]. They have a nice flickr stream on [http://www.flickr.com/photos/29346851@N07/sets/72157606597675947/detail/ constructing the touch surface].
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+We are trying the IR LEDs from [http://www.environmentallights.com Environmental Lights].
=Projection/Touch Surface=
=Projection/Touch Surface=
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A larger table would have a projection area of 48" x 36", laid on a 51" x 39" plexiglas top.
A larger table would have a projection area of 48" x 36", laid on a 51" x 39" plexiglas top.
−A long informative thread on the use of [http://nuigroup.com/forums/viewthread/2197/P15/ silicone coated vellum] as a touch-compliant surface.
+A long informative thread on the use of [http://nuigroup.com/forums/viewthread/2197/P15/ silicone coated vellum] as a touch-compliant surface. We are going to try the [http://www.youtube.com/watch?v=vvO_lvyDGVo technique of Tinkerman] (aka dinomaui, in which a 50:50 mixture of xylene and GE Silicone I is applied with a textured roller to the back of the vellum.
=Table Frame Design=
=Table Frame Design=
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There is a video at: http://youtube.com/watch?v=skZCBvWVu8A
There is a video at: http://youtube.com/watch?v=skZCBvWVu8A
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+=Parts List=
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+[http://www.environmentallights.com/products/12352/Dimmable_LED_Ribbon_foot_InfraRed Narrow Dimmable LED Ribbon Flex] (InfraRed 940 nm)
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+[http://www.environmentallights.com/products/12310/38_Aluminum_DEEP_Channel_98_in_long_nickel Regular Ribbon Flex (0.375 in. glass) Aluminum DEEP Channel, 98 in. long, Brushed Nickel]
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+Clear Acrylic Pane (27" x 35", 3/8" thick, polished on edges with bumped corners.
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[http://vis.renci.org/multitouch RENCI Vis Group Multi-Touch Blog]
[http://vis.renci.org/multitouch RENCI Vis Group Multi-Touch Blog]
Description of the Duke Multi-Touch Wall
Description of the Duke Multi-Touch Wall
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+[http://www.touchfactors.com TouchFactors Lab]
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+[http://peauproductions.blogspot.com/ Peau Productions]