Subject: Re: Modification of X-10 Motion Detector -- Need Help
References: <email@example.com> <firstname.lastname@example.org>
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NNTP-Posting-Date: Mon, 06 Jan 2003 06:08:13 GMT
Organization: AT&T Broadband
Date: Mon, 06 Jan 2003 06:08:13 GMT
Thanks so much for your help, it worked perfectly, I only made
one little change, I covered the photocell with tape so I would not
have to guess the resistor value or make a run to radio shack.
As a funny side note, after I changed it to how you suggested I
noticed that about every 15 seconds the transmitter fired off, however
it appeared to be just sending another ON command but I got worried it
would kill the batteries too quickly, then I realized what it really
Although I had the motion sensor covered, I was breathing on it as I
looked at the circuit, and about every 15 seconds I guess it put in
enough heat to trigger the PIR detector. LOL, in any event, I cut the
trace between +V and the PIR and it cut the power consumption by 2/3's
of the overall circuit.
I now have it all mounted in the LUX Set-Back Thermostat case, it's on
the wall and working perfectly.
On Sun, 05 Jan 2003 22:19:34 GMT, email@example.com (John Fields)
>On Sun, 05 Jan 2003 20:48:47 GMT, WildOne
>>I know this modification should be pretty easy, but I have not been
>>hands-on in electronics for over 15 years now and obviously lost a lot
>>of my touch, because I just can't figure out a clean way to re-modify
>>the circuit to work the other way.
>>Any chance anyone here could take a look at the schematic from the
>>line above and tell me where I need to hack this thing to get the
>>result I want.
>Put everything back like it was originally, then remove CDS1 and
>replace it with a 30 k ohm resistor. lift the end of R11 going to
>+V and connect it to the NO contact of the relay. Connect the
>relay's COMMON terminal to +V. If it doesn't work, increase the
>value of the resistor used to replace CDS1 until it does.
>Professional circuit designer