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mr.Curmudgeon

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« on: February 08, 2006, 11:45:53 pm »
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mccoy178

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Re:
« Reply #1 on: February 08, 2006, 11:59:09 pm »
Totally Dawsome!
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cholin

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« Reply #2 on: February 09, 2006, 10:59:57 pm »
Daaaamn.
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coasternuts

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Re:
« Reply #3 on: February 10, 2006, 05:16:42 am »
Whoa!  Nice effects.

Set up a projector behind an acryllic pane, lined with LEDS and photodiodes(?).
Other than the projector, it sounds pretty cheap.

Unless, the acryllic is "soft",  does it need to be to reduce the light?

How are the LED's detected?  I assume the led's are aligned across the top/left and detected bottom/right.  This would give the x,y locations.  What devices could be used to detect the leds on the other side?

http://mrl.nyu.edu.nyud.net:8090/~jhan/ftirsense/index.html

Anybody have an ACM account?  I would like to read the .pdf.

http://portal.acm.org/citation.cfm?id=1095034.1095054

I'm a nerd for asking, I know.   :D
« Last Edit: February 10, 2006, 05:28:19 am by coasternuts »
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Ed_McCarron

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Re:
« Reply #4 on: February 10, 2006, 08:20:03 am »
"How are the LED's detected?"

The title of the paper is:

Low-cost multi-touch sensing through frustrated total internal reflection

My guess?

Shine light thru the edge of the plastic.  Where you touch will create a loss path for the light (think of a glass of water - reflective until you touch the side of the glass, at which point you can see your fingertips) and the system is able to interpret the intensity changes as a position.

See?  You're not the only geek... :)
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But wasn't it fun to think you won the lottery, just for a second there???

coasternuts

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Re:
« Reply #5 on: February 10, 2006, 10:27:11 am »

Quote from: Ed_McCarron on February 10, 2006, 08:20:03 am
Shine light thru the edge of the plastic.

Yeah, I figured that much.

Got the paper. 

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Ed_McCarron

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Re:
« Reply #6 on: February 10, 2006, 02:18:34 pm »
Wow.

Now that I got to see the video (server was dead this am) that is amazing.
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But wasn't it fun to think you won the lottery, just for a second there???

allroy1975

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Re:
« Reply #7 on: February 12, 2006, 02:32:57 am »
is that the future?!  I want it now too.  That's EXCITING.  seriously...like..when a new video game comes out..it's like..oh that's cool, or that looks great...this is WAY better than that. 

THE FUTURE!   assuming we doin't destroy the planet first...

Allroy
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M3talhead

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Re:
« Reply #8 on: February 12, 2006, 10:55:46 am »
*Waits for post announcing the US government has established a "Pre-Crime Unit".
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JackTucky

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Re:
« Reply #9 on: February 12, 2006, 09:32:37 pm »
Can I just get a reasonably priced touch screen for my Juke?

Now?

JAcktucky
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Well, that's where we go a-ridin' into town, a whampin' and whompin' every livin' thing that moves within an inch of its life. Except the women folks, of course.
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