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Messages - Ulfilas

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Other / Re: Setup for small space or tidy booth!
« on: October 21, 2010, 03:49:07 AM »
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 :( 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

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

oh.... yes... and I've actually played with it successfully :))
 MT software of John Hardy and Christopher Bull, mentioned here:

The download link is:

Wiimote Interactive Whiteboard / Re: Wiimote Camera Angles
« on: October 10, 2010, 04:52:04 PM »
What I'm trying to work out - is what is the maximum distance you can put the wiimote before it's out of focus!
I use a fairly large screen with rear projection and have been having some problems (still working out what they are)
The screen - if the full area is used - is about 8ft W x 6ft H

I understand that the basic rule is twice the height should be the distance away - so 12 feet in my case does the wiimote also need to be at a particular height and angle in relation to the screen as per the diagram above in this thread?

As we can't see an image of what the wiimote is "seeing" it does make it difficult to get things spot on!

IR Pens / Re: Really Bright LEDs - Instead of Vishay? Rear Projection
« on: October 10, 2010, 03:33:50 PM »
I'm wondering whether the fabric of this screen has some IR filtering built in. I've sent the manufacturers a message to find out! I'll try a few other surfaces too. My ideal setup will be a rigid screen probably made of plexiglas/perspex with a frosted finish. I've seen some posts on the nuigroup forums about rear projection materials so once I find something that works well - I'll share it with the community here :)

Wiimote Interactive Whiteboard / Re: Whiteborad and Multitouch
« on: October 08, 2010, 08:25:47 AM »
sorted it... you have to put the "" marks in so it should be "install driver.cmd"
it wasn't obvious...

Wiimote Interactive Whiteboard / Re: Whiteborad and Multitouch
« on: October 08, 2010, 06:58:53 AM »
I'm having trouble loading this.... I get stuck at the stage where I'm supposed to type Install driver.cmd - running as administrator  - I get error messages

Wiimote Interactive Whiteboard / Re: Rear projector screen
« on: October 08, 2010, 06:56:50 AM »
the guys over at have used it on a shop window at night.

Wiimote Interactive Whiteboard / Re: UK Power supplies
« on: October 08, 2010, 06:55:06 AM » do them... they look pricey though

Even using command prompt as administrator - I can't get past the Install driver.cmd stage. I get error messages :(
Anyone got any ideas? I'm running Windows 7 64bit Ultimate

this is great stuff - will be downloading and playing with it NOW!

General Software Talk / Re: Support of Multi Touch in Windows 7
« on: October 08, 2010, 05:37:41 AM »
It obviously does work with ir pens... its just as far as I can see noone has yet incorporated it into their whiteboard application for wiimote. It has been incorporated into the software the Eduard from Webcam Whiteboard has developed in his own hardware and software solution - that looks a little like a reboxed wimote system of sorts! Very interesting. Also I understand that Hitachi/Epson and a few others have now started to incorporate interactivity into their projectors including multitouch

Project Ideas / Re: no pen whiteboard
« on: October 07, 2010, 10:02:36 AM »
There are several multitouch things using lasers - over at the nuigroup forums. One really nice one uses a rear projection tv with lasers and cameras to do it.

There are also multitouch overlays available for plasma/lcd screens - I am going to look into these to see if they can be used on say a rear projection screen instead...

Project Ideas / Re: Laser Tag - adapted?
« on: October 07, 2010, 09:58:58 AM »
I just came back to this after ages... and I wondered what the actual range of the wiimote camera was? does it have a maximum focal length... I'd be interested in trying the remove IR filter idea - but would this work with smoothboard - or does it only see IR blobs?

General Hardware Talk / Re: Wii IR camera as standalone sensor
« on: September 30, 2010, 06:31:19 PM »
oh - you mean like these?

I really need to know if there has been any research into this - and if it's possible to help the wiimote see the ir source better by using multiple LEDs? I am using quite a large screen - and a standard projector that needs to be a few metres away.  Is there a definitive guide on maximum distance the wiimote can see as standard and what the maximum screen size is with one wiimote?

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