Entries from BlaXwan's tagged with 'FTIR'
Multitouch Display: CD burner infrared laser short test
This is a very short post compared to the ones that I write normally.Anyway, I was looking around to find how I can achieve the great results that AlexP got in his laser multitouch. I really suggest you to read that link, Alex method is really cool!So, basically I was guessing where I could find a suitable infrared laser to use for generating a very thin flat plane of infrared light just in front of the multitouch screen.Googlin' around I found that the laser included in the DVD player/burner is not good as it is a visible red laser of...
Multitouch Display: a plexiglas case for the LCD FTIR multitouch (part two)
Look at this, isn't it wonderful?!?! Yessss!!! It looks very very nice!Anyway, of course it is still to be completed, I need to prepare all the braces for the circuit boards, the bracket for the webcam and, of course the infrared setup and the front mask.So, let's start with this second part of the construction notes! After bending all the parts, I had to refine them because, as I said, I abounded with measures because I was not knowing how much material I would loose with the bend. In this phase I discovered how useful is the circular saw for...
Multitouch Display: a plexiglas case for the LCD FTIR multitouch (part one)
As you surely remember, three weeks ago I posted about my first test with an LCD panel for multitouch applications. I saw that it had enough chances to work out but I was so scared about the fact that the bare LCD panel is extremely delicate. So, as I was saying at the end of the post, I started to think, then work, to a case for this multitouch display.Of course I thought about a case that should also look nicely, what's better than a plexiglas one? So, after some weekends of work, this is how the case is looking...
Multitouch Display: testing LCD screen panel for FTIR
Quite a long time has passed since I did something more for my multitouch display. My last post on this topic was on November!Unfortunately I did not any progress basically because I don't own a projector, so, everytime I should ask to someone to lend me a projector then I have limited time to do some tests with it. This is not exactly comfortable especially because I have very limited spare time and quite never in consecutive days.So, in the last months, I was thinking more often that it would be nice to achieve the goal to use an LCD...
Homemade Multitouch Display: mini guide first release
..:.:: Click here to go to the guide ::.:..In the last month I was very busy with my work so I didn't find enough spare time to dedicate to my multitouch. That's why I didn't posted anything, because there were no news to post about.In this week finally I arranged to find a little bit of time at evening so, paragraph after paragraph I completed what I can say the "alpha" version of my multitouch display DIY guide!Compared to the "work in progress" version that hopefully you saw after my last post, I completed the section two and basically wrote...
Homemade Multitouch Display: a mini guide is coming
I know that my Multitouch Display page has been left alone since I wrote it, with no updates even while I was anyway going on with my multitouch work and tests. In addition, when I write something on the multitouch matter, I'm assuming that everybody knows a lot of things, quite all I've learnt on it until now and I know that is not so useful. On the other side some of you rightly wrote me saying "why you don't give further and detailed informations on the construction, the components used etc.?".I know that there are already tons of informations...
Multitouch Display - Part Three
Table of Contents(last update November 13th 2007)Part One Intro What is a Multitouch Display? DI Multitouch FTIR Multitouch Part Two Ok, I want to build one! What I need? Choose your destiny Design considerations Infrared LEDs and filter Electronics and power supply Rear projection Compliant surface Infrared camera List of materials Part Three Let's build it! Plexiglas Alluminium frame IR light The camera First test The compliant surface Wooden frame Let's build it! Let me see... if you are reading this page for the first time, probably you want just to understand how you can build a multitouch display....
Multitouch Display - Part Two
Table of Contents(last update November 13th 2007)Part One Intro What is a Multitouch Display? DI Multitouch FTIR Multitouch Part Two Ok, I want to build one! What I need? Choose your destiny Design considerations Infrared LEDs and filter Electronics and power supply Rear projection Compliant surface Infrared camera List of materials Part Three Let's build it! Plexiglas Alluminium frame IR light The camera First test The compliant surface Wooden frame Ok, I want to build one! What I need?If you reached this point, probably you're starting to think that, maybe, you want to build your own multitouch display. Otherwise,...
Multitouch display, build your own: new compliant surface complete test
Some days ago I was finally able to make a complete test of my new compliant surface made of the silicone rubber layer and the sketch paper. As usual, I can say that this was also a partial success.The layers of silicone and paper gave great sensibility to my FTIR multitouch setup. Actually a very light touch is enough to trigger the blob recogniction, even the passage of a paper tape roll is detected!As I was saying, there are anyway something to work on. The silicone rubber is still a little bit sticky and this cause the sketch paper to...
Multitouch display, build your own: silicone rubber preparation video in progress
After I successfully tested the sketch paper I promoted the silicone rubber layer to the status of "useful". So I proceeded to acquire from the camcorder the video of the silicone layer preparation that I shooted two weeks ago.Actually the video is nearly two hours long, so I will take some time to me to edit it and shorten to a more reasonable lenght but without loosing important informations. So, if you're going to prepare a silicone rubber layer by your own and you have particular doubts or questions, feel free to comment in this blog and to ask, so...
Multitouch display, build your own: testing tracing paper and sketch paper
Finally I was able to use some spare time to buy and try the tracing paper, to be honest, I din't post the tests done with it because it didn't worked out as expected! Sorry for being away so much time! Of course there's another reason why I'm writing this post, I could not be so motivated by a tracing paper flop!Last sunday, after I wrote the last post in which I said that I didn't have the tracing paper to test, a friend of us came home. Before she came, I was speaking with her on the phone and,...
Multitouch display, build your own: paper on the silicone rubber layer
Thanks to the first great suggestions from Cirrus and Cerupcat from NUI Group, this morning I tried an early workaround to solve my problems with the silicone rubber. Some indications came out also from Gravano and, actually, we're quite sure that the silicone rubber failure is most probably due to its excessive stickiness. This silicone rubber stikiness is the cause of the high cohesiveness of the rear projection surface on it and this frustrate the whole screen surface setting off the FTIR effect without any finger touch. Most probably this is why any other touch is not detected and why...
Multitouch display, build your own: silicone rubber layer first test
I've just completed the frame for my multitouch display and I could not resist from making an early test tonight!To be honest, I have nothing to be enthusiastic for...This is because this first test went really really bad. I had no usable "blobs" at all! I made also a short video that from the IR camera's view shows no blobs with the rear projection film applied. To be more precise, I had great effect on the bare silicone layer, the blobs were really clear and fast responding. As soon as I place the rear projection film on it all that...
Multitouch display, build your own: a compliant surface with a silicone rubber layer
Finally I arranged to prepare a silicone rubber layer to use in the multitouch display. I will use it to improve the coupling beetween the plexiglass and the rear projection film so that the display will be more sensible to finger touches and will require no more hard pressing to detect touches, yes, it is also an hope! <img src="http://www.diniro.net/fabbblog/fabbbultitouch_silicone_rub.jpg"> If you're trying to do the same don't worry! I video recorded the whole process and I...
Multitouch display, build your own: silicone rubber and a wooden frame
Finally I decided to build a wooden frame for my multitouch display. Basically I'm trying to build a light frame that may hold the plexiglass with the alluminium frame holding the IR LEDs together with the projection surface and the compliant surface that I'm going to make with silicone rubber. Here you can take a look at the actual stage of the wooden frame, it is quite complete, the glue is drying! On the right side you can see the silicone rubber I bought to make the compliant surface.Once the frame will be ready I hope to handle more comfortably...
Multitouch display, build your own: the video of my first test
Probably you already saw the page called Multitouch Display. which is in the Projects section of this site.Probably you were just scrolling it trying to figure out what this bunch of LEDs, wires and plexiglas are used for.Probably you perfectly understood what that page was talking about but you thought that it can't work.In every case, I was finally able to upload a video that I recorded the first week of August, it is the video of the first test of my Multitouch Display! Here we go: Please excuse me for the poor quality of the video but my camcorder...
Multitouch Display - Part One
Multitouch video collection Table of Contents(last update November 13th 2007)Part One Intro What is a Multitouch Display? DI Multitouch FTIR Multitouch Part Two Ok, I want to build one! What I need? Choose your destiny Design considerations Infrared LEDs and filter Electronics and power supply Rear projection Compliant surface Infrared camera List of materials Part Three Let's build it! Plexiglas Alluminium frame IR light The camera First test The compliant surface Wooden frame Intro Have you seen the Jeff Han's video showing his incredible multitouch table? Me too, that's why I could not resist and I started to try...
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