My multitouch screen has reached a state in which it is completely stable.
I can walk away and come back an hour later and still have a working multitouch.
I like it, i made some videos.
The famous Smoke Demo
PhotoApp
My Typo Flash App with menu functions
The box. Its almost finished, got to add some wheels for the rolin’.
All the technology is now fixed in the box, a stable setup after all!
Soon a view on the inside.
The wiggle in the blobs is completely eliminated. The only bad side effect is that i lost a small portion of sensibility but thats way better than wiggling blobs. Thanks to Seb from the Nuigroup forum. Additionally i added some code so i could adjust the wiggle sensibility from within a xml config file. No more C++ compiling for now.
Last night was my first experience with C++. Actually it looks alot like As3.0 or is it the other way around ;).
The case with the shaky fingers bothered me so much that i opened up the source code and with good help from the Nuigroup i was able to eliminate most of the shaking. The side effect is that a finger isn’t tracked when it moves extremely slow. But with help from the Nuigroup community i might be able to fix that also.
Still C++ feels like your dealing with “The real thing!”. Very Mature, or so. Zipp it.
Some progression, mounted the mirror in the box and fixed the infrared led clusters in the box. With a bit of tweaking i managed to get the screen evenly lightened by the infrared light. I did some first photo app tests on the new setup and i am pleased!
The blob detection is still a bit shaky but i hope to fix that later. Next step is to get rid of the hot spots from the led clusters, i’m gonna put a reflective soft filter on the inside of the box and point the led clusters towards it.
This is the final setup. Very much under construction though. But the industrial look remains the same.
Rock on.
Today also the mirror arrived in the mail. This mirror is a Polystyrene mirror which means that you can bend it, like a laugh mirror, which is not that funny for accurate vision. Also this mirror has the reflective layer as front surface which means i wont get any double reflections, i hope. I wil test it later. If everything fails i can stil make a nice Barbie House from it.
Finally i received my Lee Filters in the mail today. This filter is used for projecten and touch surface, its a sort of plastic so dirty fingers and wet fingers are less of a problem instead of vellum.
I found an awesome overview of multitouch techniques from 1982 up to the iPhone. I already knew that the multiouch principle was not a new thing, but this overview helps me understand how it evolved in the years. A nice fact is that the quite famous “pinch” gesture, for transforming pictures on a multitouch setup was already created in 1992. I thought it was Jeff Han who invented that gesture, but no. Eveything has be done before.
Finally i made a drawing, with this drawing the fabrication phase of the multitouch setup has started.
