The tinker.it blog (and site) has tons of great projects for designers and artists, like this one a Multitouch table -
This is an experiment based on "frustrated total internal reflection" aka FTIR. This is a very basic demo and we did it just to see how it work and it took us just 4 days!
tinker.it » Blog Archive » multitouch table experiment - Link.
Posted by Phillip Torrone |
Feb 28, 2007 11:55 AM
DIY Projects, Electronics |
Permalink
| Comments (5)
| Email This |
| Digg this!
Oldest comments listed first.
Subscribe to MAKE Magazine!
Subscribe today, save 42% and get web access to MAKE free. MAKE Digital Edition is available only to subscribers.
$34.95 / 1 year
(4 Quarterly Issues)
Check out more videos from MAKE.
 |
MAKE on Facebook Visit our Facebook page and become a fan of MAKE! |
 |
MAKE on Twitter Follow our MAKE tweets! |
 |
MAKE on Flickr Join our MAKE Flickr Pool! |
Gareth Branwyn
Editor-in-Chief
Phillip Torrone
Senior Editor
| Web | Twitter
Becky Stern
Associate Editor
| AIM | Twitter
Marc de Vinck
Contributing Writer
| AIM | Twitter
John Park
Contributing Writer
| Twitter
Sean Ragan
Contributing Writer
| Twitter
Matt Mets
Contributing Writer
| AIM | Twitter
Dale Dougherty
Editor & Publisher
| Twitter
Shawn Connally
Managing Editor
| Twitter
Goli Mohammadi
Associate Managing Editor
Kip Kay
Weekend Projects
| AIM | Twitter
Collin Cunningham
Contributing Writer
| AIM | Twitter
Adam Flaherty
Contributing Writer
| AIM | Twitter
John Baichtal
Contributing Writer
| AIM | Twitter
More contributors: Mark Frauenfelder (Editor-in-Chief, MAKE magazine), Kipp Bradford (Technical Consultant/Writer), Chris Connors (Education), Diana Eng (Guest Author), Peter Horvath (Intern), Brian Jepson (O'Reilly Media), Robert Bruce Thompson (Science Room)
Why advertise on MAKE?
Read what folks are saying about us!
Click here to advertise on MAKE!
Behind the Scenes at MAKE and CRAFT
In January, many of the remote MAKE/CRAFT team members (myself included) convened at the Maker Media headquarters at O'Reilly Media in Sebastopol, California. Take a look behind the scenes of your favorite DIY publications as Goli Mohammadi gives us...
More...
Help | Write for MAKE | Contact Us | Subscribe | Advertise with Us | Privacy Policy| About MAKE | FAQ
© 2010 O'Reilly Media, Inc.
All trademarks and registered trademarks appearing on makezine.com are the property of their respective owners.
RSS
saw a massive APR based touchscreen at an Industrial Design expo in Miami a few years back that I thought was the next big thing, kind of surprised APR didn't take off more, since its just a few piezoelectric transducers and some signal processing and sample matching you could turn any sound transmitting surface into a touch screen
only downside of APR is it is based on sound, so it only works on touch, not drag, its like passive surface wave
although... I don't see why surface wave couldn't be used, same concept but with transmitters as well.
Reply to this comment
I'm curious what happens if the plexiglass is scratched ?
the APR stuff looks interesting too, i wonder how resistant it is to external sounds.
http://www.elotouch.com/
Reply to this comment
FTIR with a scratch should cause a "touch", unless the application handling processing is written as to handle them, like an "alignment" of sorts
APR handles scratches very well, even seen some systems that could handle cracks although I imagine again, its more about signal processing and tuning than anything specific with the hardware design.
Reply to this comment
i am very excited to khow that what will happen if plexiglass scratches.
Reply to this comment
i wonder how resistant it is to external sounds
Reply to this comment