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This has to be one of the most amazing hardware hacks ever. Using a Nintendo Wii remote and some software that he ginned up himself, Johnny Chung Lee of Carnegie Mellon University took a few ballpoint pens, replaced them with IR lights, and presto! Since the Wii tracks IR lights, Lee found that practically any surface -- a projector screen, a tabletop, an LCD screen -- could be turned into a multi-touch screen reminiscent of the iPod Touch or Microsoft Surface.

The software can be downloaded here. Found via the Quarter to Three forums.

Posted by: Nick
December 18, 2007 7:18 PM

ABSOLUTELY AMAZING! That's one of the best ideas I've seen in a while. You should seriously sell this idea to a company, because it could really revolutionize the touchscreen/projector industry.


Posted by: Rob McNealy
December 19, 2007 9:47 AM

You are a very creative and talented engineer! Got any great business ideas?


Posted by: Microsoft CRM
December 19, 2007 10:24 AM

Although the resolution may not be that of a commerical unit, the price/performance simply cannot be beat. Also, I think for most business applications anyone would notice. Most impressive and well done!


Posted by: Paul May
December 19, 2007 10:28 AM

That's cool. I did something similar a few years ago; but it used visible light, and had no multi-touch elements. Johnny's implementation is excellent; and affordable.


Posted by: Ken
December 19, 2007 10:41 AM

I just planned my afternoon


Posted by: Rick
December 19, 2007 11:08 AM

How do you control the mouse clicks?


Posted by: Dave
December 19, 2007 11:10 AM

An excellent low-cost alternative to touch-screen systems. Hope you patent the idea for new types of projectors and similar, and run with it.

At the very least, giving the software for use with the wiimote away is most awesome of you.


Posted by: Nhiko
December 19, 2007 11:27 AM

This is just fabulous !


Posted by: Tim
December 19, 2007 11:27 AM

Genius, pure and simple. Nick is right, you need to find someone to commercialize this if you haven't already. Seriously, I would love to walk into a store and buy something like this. It's hard enough to find a Wii as it is without people buying them to setup touchscreen terminals.


Posted by: Dave
December 19, 2007 11:28 AM

You can pick up a cheap IR light from http://www.photonlight.com/Photon-Micro-Light-I-Keychain-LED-Flashlights-p/p1-keychain-led-flashlight.htm

I'm about ready to buy one to try this out.


Posted by: Russ @ bombay potatoes
December 19, 2007 11:31 AM

That really is quite an impressive hack.


Posted by: Joel Odom
December 19, 2007 11:44 AM

Brilliant!


Posted by: Paul
December 19, 2007 11:46 AM

NICE


Posted by: Jim
December 19, 2007 11:47 AM

should try using two wiimotes and doing this in three-dimensions, like Minority Report. Or to detect when the LED is resting on the 2D surface, so you don't have to turn the LED on and off all the time.


Posted by: WiseGuy
December 19, 2007 11:54 AM

Incredible. Correct me if I'm wrong, but you could also use this as a light pen on any desktop surface and project to a screen overhead. The applications are endless, and all it will cost is a WiiMote and some bits and pieces I have lying around... wicked sick.


Posted by: RunLevelZero
December 19, 2007 11:56 AM

Nice job. I'll take two. :)


Posted by: Maalstrom Aran
December 19, 2007 12:41 PM

That is pretty sweet! Cheap too!
I'm impressed


Posted by: Giovanni
December 19, 2007 12:42 PM

Really grat!!


Posted by: Neil
December 19, 2007 1:05 PM

Just goes to show you that with some real ingenuity, a college kid can come up with something Microsoft has probably spent millions developing and now, will never be able to market, since this makes the whole "Microsoft Surface" a moot product, don't you think?


Posted by: lirathal
December 19, 2007 1:16 PM

it's called a smartboard. It's been invented, but it's very cool that he's done it with a WiiMote

http://www2.smarttech.com/st/en-US/Products/SMART+Boards/default.htm


Posted by: Tom
December 19, 2007 1:28 PM

Very impressive. I don't own a Wii but will consider getting a wiimote just to play with this!


Posted by: ms
December 19, 2007 2:12 PM

Sell to a company?

He's given it away to everyone. It's more valuable now. Now a company doesnt' need to buy it, and neither do you.


Posted by: Antonio Costa
December 19, 2007 3:02 PM

GREAT! One of the best constructive hacks I've seen lately.
I'm thinking of buying one Wiimote and some cheap IR pointing devices to use at school (where we have hanging projectors) and at home...


Posted by: Jim
December 19, 2007 3:18 PM

Yes, that really is amazing! And for such an inexpensive cost too. I can't wait to see if something like this will ever surfaces in the consumer market as an inexpensive input system.


Posted by: John
December 19, 2007 3:37 PM

wow, very impressive


Posted by: Arnout Symoens
December 19, 2007 4:16 PM

This is a really great hack ! And cheap!



Posted by: Sum Gai
December 19, 2007 4:55 PM

This is pretty stinking cool. So much for needing 60" LCD's to make the M$ interface work. Combine this with the "bump" interface and things could get very interesting.


Posted by: Kelwin
December 19, 2007 5:16 PM

That is friggin awesome... the versatility makes this something that can be afforded on nearly any budget... great for small businesses that cannot afford to get all the high priced presentation equipment that the large corporations have....


Posted by: Kelwin
December 19, 2007 5:17 PM

That is friggin awesome... the versatility makes this something that can be afforded on nearly any budget... great for small businesses that cannot afford to get all the high priced presentation equipment that the large corporations have....


Posted by: joe
December 19, 2007 5:23 PM

you rock brother


Posted by: chewbacca
December 19, 2007 5:27 PM

C+ at best. Nowhere near as cool as my baking soda volcano for my grad project.


Posted by: Psi
December 19, 2007 5:52 PM

NICE!
You could also use a IR laser instead of the pen+IRLED. Then you could use it from far away :)


Posted by: safarisucks
December 19, 2007 9:15 PM

If you're not a millionaire already, I hope you become one soon. Excellent work. :)


Posted by: Microsoft CRM
December 19, 2007 9:50 PM

Well done!


Posted by: crimius
December 19, 2007 11:30 PM

pretty cool. as to selling this idea to another company however, the Microsoft surface table already uses infra red cameras to track touch, so you might run into some issues there. otherwise, this is an amazing hack. very nice.


Posted by: James Tsai
December 19, 2007 11:52 PM

Hey Johnny, this is James Tsai your fellow CS major from UVA. Definitely glad to see that you're doing such amazing and cool stuff now. Congrats!


Posted by: Piffer
December 20, 2007 12:37 AM

WWWWOOOOOOOOOWWWWW

Hehehe Now I know what my next project in the office will be :-) We show a lot of maps etc on a projector screen for presentations, so if we can rotate and resize them that easy, this will be soooooo cool!

Thanks!!!!

-P


Posted by: Jonathan
December 20, 2007 1:24 AM

That is pretty much freakin awesome.


Posted by: Dee
December 20, 2007 1:29 AM

This is great! I teach second grade...the kids are going to love it!


Posted by: PTD
December 20, 2007 2:03 AM

Curious, is it possible to have the IR light pressure sensitive? That way, when you are pushing down to "write", it would turn on without the need to push a separate button. I am just curious if this would provide a more nature system. This would only be useful for the later demonstrations using a table top rather than use on the screen of course.


Posted by: jeremy
December 20, 2007 2:13 AM

As wiimotes are so cheap, have you thought about combining 2 or more wiimotes to increase the resolution? You could dedicate a wiimote to track a quadrant of the screen for example.


Posted by: iva
December 20, 2007 3:08 AM

Jeremy, you are a total dumbass


Posted by: chewbacca
December 20, 2007 9:24 AM

iva rules


Posted by: Kit
December 20, 2007 11:51 AM

Total genius! He needs to start selling a ready made kit for end-users (less the Wii mote of course, so not to incur copyright/trademark issues). I'd buy that in a flash!


Posted by: jeremy
December 20, 2007 5:44 PM

As wiimotes are so cheap, have you thought about combining 2 or more wiimotes to increase the resolution? You could dedicate a wiimote to track a quadrant of the screen for example.


Posted by: jeremy
December 20, 2007 5:48 PM

As wiimotes are so cheap, have you thought about combining 2 or more wiimotes to increase the resolution? You could dedicate a wiimote to track a quadrant of the screen for example.


Posted by: Chris
December 20, 2007 7:18 PM

Could you use something like a commercial laser pointer for this? I'm not very savvy when it comes to LEDs and IR.


Posted by: Russ
December 20, 2007 7:46 PM

Cool application of this would be to have a remote network-based small projector and wimote type sensor integrated. That way you could have say, the computer running like your home server in basement or wherever and then interact with it through the network via a touch surface. Something like having the projector in the ceiling over your countertop in the kitchen would then allow you to control and interact with a remote PC.


Posted by: vasr
December 20, 2007 10:54 PM

Below is a link to an article on how to make a cheap Infrared LED Pen and also some info on BT adapters for connecting up your Wiimote to your PC.

http://www.terracode.com/IR_Pen/DIY_IR_Pen.html


Posted by: Bob
December 21, 2007 7:16 AM

I love that fat Asian guy, all i want for xmas his him in just his glasses hanging out of my stocking


Posted by: alex
December 29, 2007 4:05 PM

hi
o would urgently need the software but his site is down
i allready ordered a wii and needed it for a exhibition
how downloaded it and could send it to me???
alex


Posted by: alejandro
January 10, 2008 12:47 PM

cool hack.I bought a wiimote just for this.......so far no problems I love it... even better when I plug it to the projector


Posted by: Stephan Doshev
January 16, 2008 8:07 PM

This is great. How did you come find this idea out? This is amazing.


Posted by: Stephan Doshev
January 16, 2008 8:08 PM

This is great. How did you figure this out? What made you thing that you can make this out of Nintendo Wii controller? This is amazing.


Posted by: Duane Elderkin
January 26, 2008 12:30 PM

Hey this is awesome. I will be showing this to the instructors and Dean at ITT Tech in Knoxville TN. We have electronics students and engineers, computer science people etc. Surely we can develope this into something quick and easy to use. All the classrooms already have projectors and pull down white screens. This is great!


Posted by: Dilip
March 18, 2008 1:12 AM

TOP HACK MAN !! AMAZING


Posted by: dokdoggy
March 24, 2008 8:18 PM

Just plain ZINGOWIE!! Z I N G O W I E--- that's the tech kids' new word for "sweet". "sweet is so '07" as I hear from my students. Pass it on, let's keep ahead of 'em.
Great app for the wii


Posted by: Daron
April 26, 2008 9:51 PM

Would this product work with this project (the LED flashlight or the laser)?

http://www.1powershop.com/en/audio-multimedia/4-in-1-led-teaching-laser-pointer-ball-pen-flashlight.html

BTW: This has to be one of the most incredible implementations of off-the-shelf tech I have ever seen. Amazing!!! You are a genius. Seriously.


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