Uh... X10 is an international standard for communicating amongst home automation products. I might start there:<div><br></div><div><a href="http://en.wikipedia.org/wiki/X10_(industry_standard)">http://en.wikipedia.org/wiki/X10_(industry_standard)</a></div>
<div><br></div><div>There are other protocols designed specifically for home automation, like a stripped down version of Zigbee, but my money is on this one.</div><div><br></div><div><a href="http://en.wikipedia.org/wiki/X10_(industry_standard)"></a>Christie<br clear="all">
_______<br>"Great spirits have always found violent opposition from mediocrities. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence." -- Albert Einstein<br>
<br><br><div class="gmail_quote">On Thu, Jun 10, 2010 at 10:00 AM, Jonathan Foote <span dir="ltr"><<a href="mailto:jtfoote@ieee.org">jtfoote@ieee.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Have you busted open a unit to see what the wireless transceiver is?<br>
<br>
Chances are high it's a cheap commodity chipset like Nordic or Zigbee.<br>
If so, you can sniff the serial commands to the transceiver with a<br>
scope and roll your own with a microcontroller.<br>
<br>
I'd be interested in looking inside the box but reverse-engineering<br>
the protocol will likely be more labor-intensive.<br>
<font color="#888888"><br>
-J<br>
</font><div><div></div><div class="h5"><br>
On Wed, Jun 9, 2010 at 1:26 PM,<br>
<<a href="mailto:travis%2Bml-noisebridge@subspacefield.org">travis+ml-noisebridge@subspacefield.org</a>> wrote:<br>
> Hey all,<br>
><br>
> You may have seen X-10 home automation equipment. It's kind of<br>
> hackish, but it's cheap. There's also an alarm system, which is quite<br>
> cheap.<br>
><br>
> I did a talk on it a LONG time ago:<br>
> <a href="http://www.subspacefield.org/~travis/x10_talk.html" target="_blank">http://www.subspacefield.org/~travis/x10_talk.html</a><br>
><br>
> Anyway, I was wondering if anyone had an ideas on how to design a<br>
> computer interface for the wireless security system. You see, they<br>
> sell a RS-232 computer interface for the regular X-10 security<br>
> protocol, but the wireless SECURITY modules use a completely different<br>
> protocol, and the console will do these (and only these) in response:<br>
><br>
> (a) dial a number on a hard line<br>
> (b) sound an alarm<br>
> (c) send regular X-10 commands to flash lights on and off<br>
><br>
> At the moment, it will only call a number (up to 11 digits I think),<br>
> repeat a message, and if you hit "0" you can listen in over the<br>
> microphone.<br>
><br>
> I was thinking that if you could tap into the circuitry somehow, you<br>
> could interface that with a computer and make the alarm response<br>
> rather flexible, for example:<br>
><br>
> (a) silent alarm - just log to the computer<br>
> (b) send an email<br>
> (c) start recording video (see GNU motion)<br>
> (d) SMS you<br>
> (e) allow you to see and/or have a two-way dialogue with the intruder<br>
><br>
> The general idea of a flexible, powerful home alarm system is<br>
> something I've actually been thinking about for over a decade, so if<br>
> anyone else is interested in this please let me know. I knew a guy at<br>
> a previous job who had an AWESOME system he wrote himself in Java, but<br>
> having worked on it for over a decade himself, I didn't feel like<br>
> asking him to share the code.<br>
> --<br>
> A Weapon of Mass Construction<br>
> My emails do not have attachments; it's a digital signature that your mail<br>
> program doesn't understand. | <a href="http://www.subspacefield.org/~travis/" target="_blank">http://www.subspacefield.org/~travis/</a><br>
> If you are a spammer, please email <a href="mailto:john@subspacefield.org">john@subspacefield.org</a> to get blacklisted.<br>
><br>
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