The NEW Build Your Own Arcade Controls

Main => Everything Else => Topic started by: mr.Curmudgeon on February 08, 2006, 11:45:53 pm

Title:
Post by: mr.Curmudgeon on February 08, 2006, 11:45:53 pm

http://mrl.nyu.edu/~jhan/ftirtouch/multitouchreel.mpg  (Video)


mrC

Title: Re:
Post by: mccoy178 on February 08, 2006, 11:59:09 pm

Totally Dawsome!

Title: Re:
Post by: cholin on February 09, 2006, 10:59:57 pm

Daaaamn.

Title: Re:
Post by: coasternuts 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

Title: Re:
Post by: Ed_McCarron 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... :)

Title: Re:
Post by: coasternuts 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. 

Title: Re:
Post by: Ed_McCarron 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.

Title: Re:
Post by: allroy1975 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

Title: Re:
Post by: M3talhead on February 12, 2006, 10:55:46 am

*Waits for post announcing the US government has established a "Pre-Crime Unit".

Title: Re:
Post by: JackTucky on February 12, 2006, 09:32:37 pm

Can I just get a reasonably priced touch screen for my Juke?

Now?

JAcktucky