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Wiimote Project » Hardware Support » Other » Setup for small space or tidy booth!
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Author Topic: Setup for small space or tidy booth!  (Read 2156 times)
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A Light Shines in the Darkness...
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« on: August 11, 2010, 07:40:35 PM »

I've been looking at making my setup into a sort of booth. Maybe like a large rear projection TV type affair!

My current projector needs to be about 3m away from the rear pro screen I have 244cm x 18cm (305cm diagonal) It's a da-lite fastfold.  I put the wiimote on top of the projector. Calibration is usually around 82% but I still have issues in the corners and a dotted line. Maybe its the power to the LED that's sporadic?

I'd like to be able to have a smaller area behind the screen - that I can box in to make it all neater. I was wondering about using an Ultra Short Throw projector that will need less space - or else trying to fold the image using mirrors.

The other thing about using a booth would be it might help with reducing stray ir light.

Anybody have experience of this? One of my concerns is that with a shorter area - the wiimote might have trouble seeing the whole screen. Should I use 2 at the back in this instance? Or would I be better off looking at using freetrack and a webcam instead with a wide angle lens fitted?
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« Reply #1 on: August 12, 2010, 05:48:06 PM »

Hi,

You can use a normal projector but projecting the screen on the rear with using mirrors. As the field of view of the Wiimote will be similar to the projection of a normal projector. Therefore, you can place it next to the projector.

Do you mean the tracking is inconsistent with sporadic tracking? If so, you may have issues with the IR pen.

Regards,
Boon Jin
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« Reply #2 on: October 21, 2010, 12:49:07 PM »

I seem to have got to the bottom of this. My rather large purchase of the rear projection screen looks to have been a mistake Sad the screen material appears to filter so much of the IR light - that I can't use it for rear projection in this setup. I'm really annoyed - as you can imagine.  I've been asking around and people have had success with thin cotton fabric and various other things like tracing paper on a window. Those are OK - but not great for me touring around at events with the setup!  I have found a supplier of spandex/lycra screens in Canada - but I don't know if these will be ok for letting the IR light through
http://www.djscreen.com/index.php

Hopefully once I get to the solution - it will help others who try to build a similar thing!
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