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added some parts, and touch factor framing link
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=
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].
We are trying the IR LEDs from [http://www.environmentallights.com Environmental Lights].
=Projection/Touch Surface=
=Projection/Touch Surface=
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=
There is a video at: http://youtube.com/watch?v=skZCBvWVu8A
There is a video at: http://youtube.com/watch?v=skZCBvWVu8A
=Parts List=
[http://www.environmentallights.com/products/12352/Dimmable_LED_Ribbon_foot_InfraRed Narrow Dimmable LED Ribbon Flex] (InfraRed 940 nm)
[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]
Clear Acrylic Pane (27" x 35", 3/8" thick, polished on edges with bumped corners.
[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
[http://www.touchfactors.com TouchFactors Lab]
[http://peauproductions.blogspot.com/ Peau Productions]