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From: dave@dlb.uucp (Dave Buck)
Newsgroups: sci.electronics
Subject: Re: X-10, GE Homeminder Tech info needed
Keywords: x-10, homeminder, bsr
Message-ID: <1990Nov29.164724.10197@dlb.uucp>
Date: 29 Nov 90 16:47:24 GMT
References: <1990Nov28.200654.29590@jato.jpl.nasa.gov>
Reply-To: dave@dlb.UUCP (Dave Buck)
Distribution: na
Organization: D.L.Buck & Associates, Inc.; San Jose, Calif.
Lines: 26

In article <1990Nov28.200654.29590@jato.jpl.nasa.gov> whoffman@jato.Jpl.Nasa.Gov (Walt Hoffman) writes:
>I recently bought a surplus GE Homeminder system which controls BSR X-10
>modules.  ....
>Everthing appears to work (video, telephone, memos, programming) but the
>x-10 codes don't seem to be transmitted. ....
>Is the any documentation available on the BSR/X-10 interface that I could
>use to understand how the Homeminder is sending out the codes on the AC
>line?  ....

You don't state how you come to the conclusion that it doesn't send the
codes.  I can either assume you're experienced with X-10 devices, or that
you're a novice.  If you're the latter send me mail, we'll discuss it offline.
If you're experienced, then I assume you've plugged some other X-10 controller
into the same outlet and verified you don't have a basic problem.
Basic problems include the device you're wanting to control being on a
different 120v leg of your house wiring (fairly common problem), interference
from wireless intercom (which also uses carrier current transmission),
wrong house code selected, ....
BSR/X-10 controllers use a proprietary circuit to transmit a serial message
with pulses at the top of each AC cycle, I believe.  And I seem to have read
a technical description of the coding in the documentation included with
the CP290 PC-programmable X-10 controller, which is not with me at the moment.

-- 
Dave Buck	{aeras,amdahl,ames,ardent,daver,netcom,sun,zygot}!dlb!dave
D. L. Buck and Associates, Inc.; San Jose, California 95119; (408)972-2825