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Article #7067Re: Need encoding scheme for TV remote infrared controller
From: Keith Mancus
Date: Wed, 02 Sep 1992 18:15
Date: Wed, 02 Sep 1992 18:15
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In article <BtyE2K.3ts@news.cso.uiuc.edu>, tmkk@uiuc.edu (Khan) writes:
> In article <1992Sep2.003540.24065@aio.jsc.nasa.gov> mancus@roger.jsc.nasa.gov (Keith Mancus) writes:
>> (1) Is there a standard [IR ]carrier frequency [for TV remotes]?
> There isn't a standard ANYTHING. Many remotes operate on 40kHz IR carrier
> frequencies, but it's far from being a standard.
Sigh. That's what I was afraid of.
>>The IR sensor we're using detects 40 MHz.
> Unless that was a typo and you really meant 40kHz....
Oops. :-) The sensor I am using (sorry, I don't have the part # handy)
is supposed to be commonly used in remotes.
>> (2) Is the encoding scheme standardized?
> Not by a long shot.
Odd. I've seen "generic" controllers that can be programmed to
drive a wide variety of remote-controlled devices. It seems pretty
difficult to do this w/out any standards!
> Borrow/obtain an oscilloscope....after playing around a bit,
>you should be able to determine the encoding scheme used, or at the very
>least which patterns go with which....
<groan> That's just what I was hoping to avoid. Sigh.
--
Keith Mancus <mancus@sweetpea.jsc.nasa.gov> |
N5WVR |
"If I owned Texas and I owned Hell, I'd rent out Texas and live |
in Hell." -General Sheridan |
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Path: arc1-ca.pugleaf.net!sparky!uunet!wupost!bcm!aio!zaphod!mancus From: mancus@zaphod.jsc.nasa.gov (Keith Mancus) Newsgroups: sci.electronics Subject: Re: Need encoding scheme for TV remote infrared controller Message-ID: <1992Sep2.181547.28000@aio.jsc.nasa.gov> Date: 2 Sep 1992 18:15:47 GMT References: <1992Sep2.003540.24065@aio.jsc.nasa.gov> <BtyE2K.3ts@news.cso.uiuc.edu> Sender: news@aio.jsc.nasa.gov (USENET News System) Organization: nasa-jsc Lines: 32