36,895 views 29 comments

My Finished DIY Multitouch Table

Well, I haven’t been able to post everything leading up to this point yet, but I wanted to get the finished images up. I’ll be writing about the process up to this point soon so that there are no gaps in the “how to” of building my table.

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New video! The table is (almost) completed!

New video showcasing the final table at work. The software is all a work in progress and new releases will be coming soon of all applications as well as new ones. If you like the video, please pass it on. If you don’t like the video, please pass it on anyway. Enjoy!

[youtube JrTI2uoGEBI]

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MultiKey Updates…it works with a mouse too!

No, I haven’t forgotten about the other programs that I first started on. I’m still developing Audioshape Sequencer as well as Musical Squares, but recently I have made some big changes/additions to the MuliKey application. I think all of the changes are great improvements and will allows for much more functionality and experimentation within a simple application like MultiKey.

First, if you’ve seen the first versions, you’ll notice that the look has changed slightly. I’ve gotten rid of the background (for now) to allow for best performance. Also the border of the keyboard has changed a bit so that it is easier to resize the keyboard. Previously the border width made it somewhat hard to select the keyboard for moving,

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New application: Audioshape Sequencer

Audioshape Sequencer is modeled after Tangible Sequencer and originally inspired by Nicolas Clavaud.This application works with a mouse and/or multitouch table (touchlib/tuio simulator or other TUIO program).

There are three main things to know about the program.

  1. There is the shape (square),
  2. signal (transparent orange shape),
  3. and sensor (Blue dot on square. Pink when activated).
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Projector Latency

Latency is a time delay between the moment something is initiated, and the moment one of its effects begins or becomes detectable. When it comes to projectors, latency refers to the time difference between the computer screen and projection from the projector. There will always be some latency (time difference) between the source image (computer) and the displayed image (projector).

Laurence Muller has a Beamer Latency Measurement Tool v0.2 that will measure the latency of the projector. Ideally anything under 20ms is really good. For multitouch, if the latency of the projector is high, there will be visible lag between finger movement of objects and the projection of these objects.
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Video featuring more multitouch software…

Here’s another video of more software running on the table. This includes “smoke”, “ripples”, “artgen”, “photo”” and my own applications “multiKey” and “MusicalSquares.”

 

[youtube=http://www.youtube.com/watch?v=cM3wM61PCmc]

1,540 views 0 comments

My first videos…

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Full Multitouch Table (without sides) Picture

Current progress. Side walls are ready, but not attached yet.

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Projection Screen tests…

I took some pictures of the projector projecting on 3 different types of materials. I’m using a Casio XJ-S30 Projector which has 2000 lumens and 1800:1 contrast.


The following images consist of Rosco Grey Projection Screen (left), tracing paper (middle), and Rosco Black Projection Screen (right).

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Rosco Projection Screen

Rosco Projection screen is an inexpensive projection screen that seems to give pretty good results. There’s a few places online you can buy it. I ended up purchasing it from rosebrand.com. All places sell by the yard and the the minimum size is 55″ by 1 yard. The price is $15 per yard at 55″ width. I ended up buying both the Rosco Black and Rosco Grey to see which would work best with my setup.
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