Author Topic: HOWTO build an IR pen (without resistor nor soldering)  (Read 9702 times)

Offline choulo

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on: February 06, 2008, 06:36:26 PM
Hello,

I've just uploaded a video explaining how to build an infrared pen from a LED light PEN (1)

You get a light IR pen and there's no need to solder anything.

[youtube]http://es.youtube.com/watch?v=I568NyZLJkY[/youtube]

Hoping to be useful for you.

Cheers,
Choulo.



Offline Gilthalas

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Reply #1 on: February 06, 2008, 06:45:24 PM
Very nice!  What was the exact pen you used?



Offline choulo

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Reply #2 on: February 07, 2008, 03:57:35 AM
I attach two pictures of the pen case. I bought it in a chinese bazaar.



Offline atomriot

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Reply #3 on: February 07, 2008, 12:04:04 PM
have you used this pen with the whiteboard app? It doesnt seem like the wiimote will pick it up when it is behind you.

Details, details. Things to do. Things to get done. Don't bother me with details, just tell me when they're done.
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James Lionel Price



Offline DominiKing

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Reply #4 on: February 07, 2008, 02:29:59 PM
Seems like a great idea, I'll be looking for this pen or something similar.

By the way, why do you say that this wouldn't work with the whiteboard app? The only reason why I see it wouldn't is because the IR light is inside the holster but that shouldn't really make a difference.



Offline dice

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Reply #5 on: February 07, 2008, 03:10:37 PM
Seems like a great idea, I'll be looking for this pen or something similar.

By the way, why do you say that this wouldn't work with the whiteboard app? The only reason why I see it wouldn't is because the IR light is inside the holster but that shouldn't really make a difference.

It will make a big difference, the board would have to be very reflective, and it would probably not work as well on LCD screens. 



Offline DominiKing

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Reply #6 on: February 07, 2008, 03:38:25 PM
does that mean that i'll need a high powered IR LED or have it exposed at the front?



Offline atomriot

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Reply #7 on: February 07, 2008, 07:34:51 PM
well you dont want a shiny board because the idea is to have a projected image on it so you dont want the image bouncing off too much or you will not be able to see it very well.

you want the IR to be visible to the wiimote so you dont have to make the led stick out, just put something that will disperse the light on the end of it like a dab of hot glue or a semi transparent piece of plastic. doing either of the last two will tak away some oomph but will make it so that it can somewhat be seen

Details, details. Things to do. Things to get done. Don't bother me with details, just tell me when they're done.
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James Lionel Price



Offline choulo

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Reply #8 on: February 11, 2008, 03:59:35 AM
I've tested this IR pen on my TFT screen and on a whiteboard and it works fine.

The wiimote reads the reflection of the IR LED.