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      <title><![CDATA[Home Automation - sethejaffe.com]]></title>
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      <pubDate>Tue, 09 Feb 2010 18:29:00 +0200</pubDate>
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      <category><![CDATA[Home Automation]]></category>
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         <title><![CDATA[Laszlo Lives Again]]></title>
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I’m happy to report that Laszlo, the home automation computer, is back with us.&#160; The 2.0 version sports a dual core processor, more onboard cache, and significantly faster memory.&#160; Of course, home automation mostly just telemeters bit commands and so the computer doesn’t really require much speed.&#160; It’s actually why we still fly 386 processors on the International Space Station.&#160; Laszlo, as a result, is severely overpowered.&#160; But then again, he has a decent iTunes...]]></description>
         <pubDate>Tue, 09 Feb 2010 18:29:00 +0200</pubDate>
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         <title><![CDATA[That Special Visitor (or how to securely let someone into your house on the cheap)]]></title>
         <link>http://www.sethejaffe.com/news/that-special-visitor-or-how-to-securely-let-someone-into-your-house-on-the-cheap-/</link>
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Because I keyed every lock in my house off a master, I don’t like letting anyone borrow a key.&#160; If I were to lose a key, it would require changing 11 locks.&#160; It takes me on average of 20 minutes to rekey a lock (yes, I’m very slow) so I came up with a way to let people into my house without giving them a key.&#160; I happen to have a magnetic card reader on my house but this system works with just a common electric door strike that will cost $30.&#160; The second item you’ll...]]></description>
         <pubDate>Thu, 27 Aug 2009 14:32:00 +0200</pubDate>
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         <category>Home Automation</category>
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         <title><![CDATA[Ghost in the machine]]></title>
         <link>http://www.sethejaffe.com/news/ghost-in-the-machine/</link>
         <description><![CDATA[The problem with X-10 technology is, well, X-10 technology.&#160; Now I must caveat that it works very well on clean lines.&#160; The problem is that there are several "dirty devices" that produce an inordinate amount of line noise.&#160; For the last few months, I've been chasing a pest in my lines that inadvertently turns on lights or changes temperatures.&#160; Annoying, to say the least.&#160; It requires some on-the-spot programming to check for bad signal reports.&#160; That way I can...]]></description>
         <pubDate>Sat, 10 Jan 2009 17:56:00 +0200</pubDate>
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         <category>Home Automation</category>
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         <title><![CDATA[Night Lights]]></title>
         <link>http://www.sethejaffe.com/news/night-lights/</link>
         <description><![CDATA[






 




One of the nicest aspects of having a central home computer is that I can tie in the lighting system to the alarm system.&#160;This gives me an inexpensive way to create a feedback control loop using $10 motion sensors. &#160;When I built the house, I made the decision to run extra wire to all of the rooms. &#160;While I never thought I would use all of the wire, originally, it turns out that I wish I had run even more. &#160;I hooked motion detectors into the 18/4 wire in most of...]]></description>
         <pubDate>Sun, 02 Nov 2008 07:29:00 +0200</pubDate>
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         <title><![CDATA[Laszlo Online]]></title>
         <link>http://www.sethejaffe.com/news/laszlo-online/</link>
         <description><![CDATA[I'll try to slowly migrate all of the tip and tricks from my last site.&#160; I don't think I'll have enough time to moderate a forum so I apologize in advance.&#160; 
Laszlo, the super smart guy who lives in the closet, was named after Lazlo Hollyfeld from the movie Real Genius.&#160; I named him as such because he happens to be housed in a custom server room I built into my house.&#160; Laszlo currently runs on an AMD 2000+ in a rack-mount high fan server.&#160; At this time, he is capable of...]]></description>
         <pubDate>Wed, 01 Oct 2008 10:35:00 +0200</pubDate>
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         <category>Home Automation</category>
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