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May 23, 2007

Updated my ftir multi touch display how-to guide

Filed under: multitouch — Harry van der Veen @ 3:44 pm

update @ 21:15:

After several wishes for a pdf version, I decided to upload that as well ;)

Download the pdf version hereĀ 

end of update

I made some changes to the ftir multi touch display how-to guide I released a while ago.

You can download the latested revised version (alpha version 2) here

I’m sure there are still some things in there that need to be adjusted.

I’ll be revising and updating this document at a later stadium.

If you have any suggestions/feedback, let me know.

Maybe I’lll do a section on software as well later on.

Changes:

* Added a couple of more pictures

* Added a section about how to make a silicone rubber sheet

* Revised layout/spelling/grammar

* Put the prices in there as well, for the materials used

May 22, 2007

Rosco rear projection screen tested with silicone rubber sheet

Filed under: multitouch — Harry van der Veen @ 3:25 pm

http://www.multitouch.nl/sverige/roscotest.jpg

Today we received a sample of Rosco grey rear projection screen, which one of my project mates from Holland sent me (thanks Martin). We wanted to test it, because the plastic white paper material we used as a projection screen didn’t block any ambient infrared light and we knew Rosco did. But we wanted to know if the Rosco had a good coupling with the silicone rubber sheet.

The left blob on the screen is with rough surface down (on top of the silicone rubber), the blob in the middle is on the bare silicone rubber (without projection material) and the blob on the right is with the rough surface up (on top of the silicone rubber). As you can see the bare silicone rubber works the best (as aspected), but the goal was to see if the silicone rubber sheet would work with the Rosco rear projection screen. The blob on the right is a bit brighter then to other one, so we definitely want the rough surface up. The blob, with the projectionscreen with the rough surface down is also slowly getting more vague over time.

So probably the next step will be to order a layer piece of Rosco rear projection screen, so we can apply it to our box.

May 21, 2007

Box painted

Filed under: multitouch — Harry van der Veen @ 12:35 pm

Here are some pictures of our painted box.

http://www.multitouch.nl/sverige/paint1.jpg

http://www.multitouch.nl/sverige/paint2.jpg

http://www.multitouch.nl/sverige/paint3.jpg

http://www.multitouch.nl/sverige/paint4.jpg

http://www.multitouch.nl/sverige/paint5.jpg

http://www.multitouch.nl/sverige/paint6.jpg

http://www.multitouch.nl/sverige/paint7.jpg

http://www.multitouch.nl/sverige/paint8.jpg

Our idea is to finish it off with a nice airbrushed logo of the university.

Lateron we will probably add speakers (1 on both sides) and attach a floor as well, optional with wheels.

tDesk & Touch Tracer - multitouch demo applications

Filed under: multitouch — Harry van der Veen @ 10:52 am

Falcon4ever of NUIgroup, created a small demo application called tDesk.
tDesk is an experimental tool running on Windows XP, which enables users with an FTIR multitouch screen to move and resize (multiple) applications with their bare hands.

(1) This movie shows how to move and scale dialogs in windows:

(2) This movie shows how to move multiple dialogs in windows:

Falcon4ever also wrote the Touch tracer application, which works on both Windows XP and Linux.

Touch Tracer v0.2
Touch Tracer v0.2 source code

Optional downloads
msvcr80.dll and msvcp80.rar - Required if no vs2k5 runtime dlls are installed
Visual Studio 2005 sp1 redist. package - Entire package if the one above fails

Visit Falcon4ever’s blog for more info.

May 20, 2007

Alternative forward page option in browser

Filed under: multitouch — Harry van der Veen @ 8:15 am

What annoys me sometimes, yeah I’m kinda shortminded, is that when you want to browse through a certain site, that you explicity have to go to the location of the “next” button or click on a number on the button of the page, like 1 2 3 4 5 (where as every number is a different page) But what if you are somewhere in the middle of a long scrollable page and you don’t want to hit the home or end button (to respectively go back to the top and bottom of the page) and continue by clicking on a button that navigates you to the next page. Wouldn’t it be easy if there’s some kinda of alternative “forward” button, not the ones used in the browser that navigates you back to the page where you were, in case you hit the “go back on page” button. But some kind of button that checks the URL on a variable, for example the variable, page or any other often used variable that indicates a pagenumber. Making some short of hierachy of variables (library) to check and see if that URL really exists (I don’t know how long this would actually take though), and if so, navigate to that certain URL.

For example: My url: http://www.multitouch.nl/?p=48

Look for the variable “page” in the url, which doesn’t exsist.

Look for the variable “p” (hierachy), because it’s a commonly used var for indicating pages.

Okay it finds the “p”. In this case the p=48.

Then do a calculation of 48 - 1 = 47

And applying the new p var to next button.

Maybe this is something that is already been done, I don’t know. It just came up in my head. If there’s some sort of firefox plugin like that, please let me know.

Another example:

Look for a number in a URL:

http://tweakers.net/nieuws/47594/

It finds 47594. Recalculate 47594 -1 = 47594 and it will get you the the next (in this case) an older news message) page.

I’m sure there are some hickups to this, but it’s just a concept.

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Multitouch software developer, custom multitouch software provider, multitouch application development, touchscreen software, multitouch software suite and platform/framework



Working with multitouch technology since Fall 2006. Thats right, before the iPhone existed ;)

By Harry van der Veen
CEO of pioneering multitouch software developer NUITEQ





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