Subject:
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Re: ir-transmitter
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 25 Mar 1998 05:55:18 GMT
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Original-From:
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Will Bain <WILLBAIN@CSsaynotospam.UMT.EDU>
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Viewed:
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2422 times
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At 07:48 PM 3/24/98 -0800, Richard wrote:
<snip>
> Also..does anyone know a common household material that will stop infrared
> transmissions within a foot or so? I built some shielding for the ir
> reciever with some bits i cut from an AOL CDROm so it can localize where
> the signal is coming from and go there.
> The problem is that its only good at insulating once you get outside of
> this about 3ft. zone around it.
Aluminum foil will stop everything bigger than x-rays (and that includes
IR). A CD looks highly reflective, but it probably refracts and reflects a
lot of energy, too. I realize they don't send foil directly to your house
like they do those AOL CD-ROMs, but it's worth the extra trouble.
--Will
, ,
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~~~~~~~~~ ' ` ~~~~~~~~~~~ ` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wendy Parson, Every improvement in communication
Will Bain, makes the bore more terrible.
& Tatoosh --Frank Moore Colby
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