Hey guys, we are building an FTIR surface and everything is ready but tbeta can’t recognize our blobs/fingers, they are tooo small or even not visible.

We only have one day left to finalize our project and present friday in school.

Do we have to make a silicon surface/ compliant surface on our polycarbonate/glass? Until today we are working without compliant surface, we just only have polycarbonate/plexiglass in our setup. The IR-LEDs are at the sides and edges of the plexiglass/polycarbonate surface. (still FTIR)

It’s german but here is our project wiki: http://gso.huetter-it.de/wiki/doku.php?id=natural_user_interface

Pictures of our setup: http://ul.to/7v4ccv

Can you post some screenshots of CCV running so we can see the blob issues?

whitenexx - 27 January 2010 01:04 PM

Hey guys, we are building an FTIR surface and everything is ready but tbeta can’t recognize our blobs/fingers, they are tooo small or even not visible.

We only have one day left to finalize our project and present friday in school.

If you have only one day, then theres no time for creating a compliant surface.
You can try another thing: LED-LP (the leds are a little bit over the surface).
Then you will get large blobs, but no single finger—but you have two hands

You can also try in CCV to amplify the picture.
(I’ planing also such a project in Essen from 7-13.2—therefore I have some time for experiments)

bernt - 27 January 2010 02:51 PM

If you have only one day, then theres no time for creating a compliant surface.
You can try another thing: LED-LP (the leds are a little bit over the surface).
Then you will get large blobs, but no single finger—but you have two hands

Why not? Tomorrow we’ll have some transparent silicon (and silicon spray too) and we’ll make a compiliant surface. (I hope so)
Amplify does help, but i don’t think the blobs are so fine. (Tomorrow we will test more and post some screenshots!)

Thanks for your answers!