2 of 2
2
Woot woot… vids are up… take a look and let me know what you think…
Posted: 08 August 2008 04:41 PM   [ Ignore ]   [ # 16 ]
Avatar
Rank
Joined  2008-07-28
Total Posts:  30
New Member

as far as how hard i’m pressing… not hard at all.. but then again i keep my fingers moist… which could be un-sanitary but eh.. i’m the only one using it for now… i’m looking into other compliant surfaces at the moment tho… different gels… different materials that behave different behaviors at certain temps… but we shall see

Profile
 
 
Posted: 08 August 2008 05:07 PM   [ Ignore ]   [ # 17 ]
Avatar
Rank
Joined  2008-05-28
Total Posts:  22
New Member

thats an interesting set up with the material between
that acrylic.
Looks really nice

 Signature 

The advantage of the emotions is that they lead us astray, and the advantage of science is that it is not emotional.

Profile
 
 
Posted: 14 August 2008 09:21 PM   [ Ignore ]   [ # 18 ]
Rank
Joined  2008-06-03
Total Posts:  2
New Member

What is “ir channel” and what does it do?
I am Norwegian and dont get all the “technical” terms

Best Regards Anders

Profile
 
 
Posted: 20 August 2008 02:14 AM   [ Ignore ]   [ # 19 ]
Avatar
RankRankRankRank
Joined  2008-01-04
Total Posts:  676
Moderator

Hello Lioncour, the ‘IR Channel’ mentioned is a groove/frame where IR LED’s are mounted so that IR light is shined into the side of an acrylic panel.  This light is trapped inside by internal reflection.  When a finger touches the acrylic surface this light is frustrated causing the light to scatter downwards where it is picked up by an IR camera.

There is a picture of the technology below from Tim Roth’s blog, and a picture of Falcon4ever’s LED frame showing the mounted IR LED’s.

sheme_ftir_web.jpg

Image from Tim Roth’s blog
Information directly from the NuiGroup Wiki

img0109mediumdv2.jpg

Image from Falcon4ever’s blog

Hope this helps!

 Signature 

Get Sparked at sparkon.net
ORION Multi-Touch Display (blog)
My YouTube

Profile
 
 
   
2 of 2
2