Sunday, April 25, 2010
Last weekend Jess and Jason (me) installed hinged doors with magnetic holders and the weekend before that we installed wheels; don't be fooled, those are no small tasks! There is of course more left to do: such as a diffusion layer under the surface, protective acrylic on the top of the surface, paint, cable management and interface ports. But these will be summer projects, maybe work for younger students.
What is paramount now is software, specifically demonstration apps. Due to time constraints I will be simply trying to get apps that have already been created for MT surfaces to run in preparation for display on the 30th of this month. But over the summer and on the horizon this table will serve as the basis for several very exciting projects to come (catch up with me if you have an idea for a project you'd like to do!)
Stay tuned for photos of the table in use!
Saturday, March 13, 2010
Click here to view a sweet photo set of the new developments!
Thursday, March 11, 2010
- We successfully cut a mount for the projector out of a 1/16" sheet of aluminum so we can mount it upside down.
- Worked on a rail-based mounting system for the projector (and mirror eventually) . Some parts are cut, some need to be cut but its coming together smoothly.
Click here to view more build photos on Flickr!
Monday, February 22, 2010
Sunday, October 25, 2009
I have tested the acrylic layer out with the vision system and it works great, though blob tracking was not great. I suspect its just a matter of isolating the IR inside an enclosure and probably more importantly tweaking settings in the vision system software to get the best out of our system. All in all things are going very well, expect some build photos in a while.
Friday, October 16, 2009
As for the projector the make and model are listed in the previous post. I hooked it up today and tested it out and am happy to say that the picture quality is crisp and bright and the throw distance is amazing. Its also very compact and quiet, which are real bonuses.
If I can find the time over fall break I will try to get the surface built (i.e., enclosing the LEDs and acrylic within a metal frame) so we can have that ready to drop into a table later on. If that sounds a little confusing here is a graphic that may help:
(click for full size)
Sunday, October 11, 2009
Our build process will hopefully be documented here in the days / weeks / months to come, but to start things off and get everyone up to speed. Check out the links on the sidebar to get to some valuable information about MT technology and what we're looking to achieve with this project.
Here is the status of our project at the start of this blog:
BenQ Mainstream MP522 ST - A short throw projector that should fit our needs well
Modified PS3Eye from PeauProductions.com - has been modified to include a suitable IR bandpass filter (meaning the camera will only see light in the IR range, specifically 850nm wavelength) as well as an adjustable M12 camera mount and lense. This is a standard lense mount for cameras and will allow us to focus and fine tune our vision area to achieve the best blobs possible
5m long flexible strip of IR LEDs from EnvironmentalLights.com - specially made 8mm wide flexible strip of SMD mount IR LEDs that will essentially be wrapped around the edge of our acrylic surface to provide IR light from within the acrylic layer itself. This item has been ordered with accompanying 60W power supply
33”x25”x8mm sheet of EndLighten acrylic - A special made type of acrylic that has been manufactured with a lot of very small reflective bits, which essentially will diffuse the IR light coming from the edges uniformly. This piece of acrylic will “glow” with IR light, which will be reflected downward when someone touches the surface. Due to high degree of illumination, no compliant surface layer will be needed, though an extra layer of very thin acrylic may be placed on top to prevent scratching. HUGE thanks to Eli Fox-Epstein from the NUIGroup.com forums for providing us with this acrylic and being super patient while payment was sorted out.
Once we have all of these parts we will test them out and then design a free-standing table to house them in.
Status of parts:
Projector - ordered
Vision system - acquired
Lighting - acquired
Acrylic - ordered