The long awaited Multitouch Technologies book authored by members of NUI Group (http://www.nuigroup.com) has officially found it’s first release! As one of the co-authors of the book, I am proud to see a final initial version come to fruition. The book, which consolidates articles from the NUI Group Wiki, includes sections on how to build Multi-touch devices, multitouch software resources, a glossary of terms and more. I  believe, as the book develops further, this will be the best resource for multitouch information on both the web and in print.
If you’re …

Well, it’s about time I released another application right? If anyone has ever played Bloom on the iphone, I’m sure you’ll recognize my port from iphone to table.
If you’re not familiar with bloom, it’s a very simple music creation application. Press anywhere on the screen to create circles that grow and ‘bloom.’ As they fade out and re-appear, they play a note. The note is based on the x-axis. As you move right, the notes go higher.

Click the above image to play
How to use:
-Press on screen (mouse, touch, multi-touch)
-Rollover/touch/click already …

Pictures from when my table was on display for a few days. I have larger pictures if you want specific ones. This post has a lot of pictures, so if they don’t all load, you may need to refresh this page.

New video of the new system that loads and unloads applications. Also, the desktop is now sending out OSC message to PureData to create some sounds based on finger number and position on screen.

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.

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!

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 …

I finally have everything up and running decently enough to make some videos. So here’s a couple videos of the software I’m currently working on. I combined both the multiKey and Musical Squares applications into one canvas. A user can move the canvas, or the individual applications around, rotate, resize them as well as some subtle extras.
Enjoy! Hopefully I’ll have some better quality videos up soon.

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).

Here’s one picture with the lights on with Rosco Black (left), and Rosco Grey (right). In the picture the Rosco Black may look slightly better, but in person the Rosco Grey is the clear winner.

It’s really hard to get an …

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.

Screen comes packaged on a roll.

Rosco Grey on the roll and Rosco Black on …