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	<description>art + science hacking</description>
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		<title>Hack &#8211; Hacking Your Intercom System</title>
		<link>http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/</link>
		<comments>http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/#comments</comments>
		<pubDate>Wed, 21 Oct 2009 02:08:13 +0000</pubDate>
		<dc:creator>dominic</dc:creator>
				<category><![CDATA[electronics]]></category>

		<guid isPermaLink="false">http://dominic-tancredi.com/?p=117</guid>
		<description><![CDATA[Ever need to hack your intercom system? I asked my friends on NYC Resistor and they helped me figure out how: Get an RF remote transmitter and receiver and power adapter &#8211; they&#8217;re pretty cheap from electronickits.com strip the power adapter wires wire the power adapter wires into the RF receiver (check voltage to know [...]]]></description>
			<content:encoded><![CDATA[<p>Ever need to hack your intercom system? I asked my friends on <a href="http://www.nycresistor.com/">NYC Resistor</a> and they helped me figure out how:</p>
<ol>
<li>Get an <a href="http://www.electronickits.com/remote_control/rf2.htm">RF remote transmitter and receiver</a> and power adapter &#8211; they&#8217;re pretty cheap from <a href="http://www.electronickits.com/remote_control/rf2.htm">electronickits.com</a>	</li>
<li>strip the power adapter wires</li>
<li>wire the power adapter wires into the RF receiver (check voltage to know which is negative and positive)</li>
<li>test the power by pressing the &#8220;learn&#8221; button on the receiver</li>
<li>&#8220;learn&#8221; your receiver &#8211; press the &#8220;learn&#8221; button on the receiver and start transmitting with your key transmitter</li>
<li>open up your intercom system and find the wires that hook in the &#8220;unlock door&#8221;</li>
<li>using the voltometer, test your intercom to see if your circuit is closed and needs to be opened (via the relay) or opened and needs to be closed (again via relay)</li>
<li>wire from the RF reciever to the intercom, then from the intercom back to the receiver to complete the circuit &#8211; it&#8217;ll either be Normally Closed or Normally Open</li>
<li>test the transmitter triggers the relay (button one does Normally Open, button two does Normally Closed for me) and it should trigger the intercom &#8220;unlock door&#8221;</li>
<li>Celebrate!</li>
<p>Here&#8217;s another solid example of <a href="http://www.cravediy.com/index.php?/archives/40-Keyless-Entry.html">keyless entry from Make</a></p>
<p>Below is a quick gallery of images of the process! Hope this helps!</p>
<p>FTD</p>

<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0648/' title='RF Remote Control Relay Board'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0648-150x150.jpg" class="attachment-thumbnail" alt="RF Remote Control Relay Board" title="RF Remote Control Relay Board" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0649/' title='Stripped Power Adapter'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0649-150x150.jpg" class="attachment-thumbnail" alt="Stripped Power Adapter" title="Stripped Power Adapter" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0650/' title='Intercom System'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0650-150x150.jpg" class="attachment-thumbnail" alt="Intercom System" title="Intercom System" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0651/' title='Intercom System - Faceplate Removed'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0651-150x150.jpg" class="attachment-thumbnail" alt="Intercom System - Faceplate Removed" title="Intercom System - Faceplate Removed" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0652/' title='Tools - Transmitter, Receiver, Wire, Screwdrivers'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0652-150x150.jpg" class="attachment-thumbnail" alt="Tools - Transmitter, Receiver, Wire, Screwdrivers" title="Tools - Transmitter, Receiver, Wire, Screwdrivers" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0653/' title='Receiver - with Power'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0653-150x150.jpg" class="attachment-thumbnail" alt="Receiver - with Power" title="Receiver - with Power" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0654/' title='Receiver - With Transmitter Testing'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0654-150x150.jpg" class="attachment-thumbnail" alt="Receiver - With Transmitter Testing" title="Receiver - With Transmitter Testing" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0655/' title='Intercom System - green wires into receiver + system'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0655-150x150.jpg" class="attachment-thumbnail" alt="Intercom System - green wires into receiver + system" title="Intercom System - green wires into receiver + system" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0656/' title='Intercom System - green wires into receiver + system (CLOSE-UP) '><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0656-150x150.jpg" class="attachment-thumbnail" alt="Intercom System - green wires into receiver + system (CLOSE-UP)" title="Intercom System - green wires into receiver + system (CLOSE-UP)" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0657/' title='Wireless Receiver - Top'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0657-150x150.jpg" class="attachment-thumbnail" alt="Wireless Receiver - Top" title="Wireless Receiver - Top" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0658/' title='Wireless Receiver - Inside Box'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0658-150x150.jpg" class="attachment-thumbnail" alt="Wireless Receiver - Inside Box" title="Wireless Receiver - Inside Box" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0659/' title='Wireless Receiver - Inside Box 2'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0659-150x150.jpg" class="attachment-thumbnail" alt="Wireless Receiver - Inside Box 2" title="Wireless Receiver - Inside Box 2" /></a>
<a href='http://dominic-tancredi.com/2009/10/21/hack-hacking-your-intercom-system/img_0660/' title='Wireless Receiver - Inside Box 3'><img width="150" height="150" src="http://dominic-tancredi.com/wp-content/uploads/2009/10/IMG_0660-150x150.jpg" class="attachment-thumbnail" alt="Wireless Receiver - Inside Box 3" title="Wireless Receiver - Inside Box 3" /></a>

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		<title>Pirate Radio &#8211; USB FM Transmitter</title>
		<link>http://dominic-tancredi.com/2008/10/07/pirate-radio-usb-fm-transmitter/</link>
		<comments>http://dominic-tancredi.com/2008/10/07/pirate-radio-usb-fm-transmitter/#comments</comments>
		<pubDate>Tue, 07 Oct 2008 04:13:31 +0000</pubDate>
		<dc:creator>dominic</dc:creator>
				<category><![CDATA[electronics]]></category>

		<guid isPermaLink="false">http://dominic-tancredi.com/?p=37</guid>
		<description><![CDATA[The war is on. The robots / aliens / zombies take down our communications and you&#8217;re stuck in pre-net era. Now is the time of the pirate. How do you communicate? Radio. You need radio to communicate. Well before Thunderstruck, I was fascinated by radio. How does it curve around the globe? (bounces off the [...]]]></description>
			<content:encoded><![CDATA[<p>The war is on. The robots / aliens / zombies take down our communications and you&#8217;re stuck in pre-net era. Now is the time of the pirate. How do you communicate?</p>
<p>Radio.</p>
<p>You need radio to communicate. Well before <a href="http://www.amazon.com/Thunderstruck-Erik-Larson/dp/1400080665" target="_blank">Thunderstruck</a>, I was fascinated by radio. How does it curve around the globe?  (bounces off the atmosphere) How does it go through walls? (magic) To fight the forces of dark, you need radio.</p>
<p>Thanks to Jens, <a href="http://www.kulturserver-berlin.de/home/piradio/prolog.htm">a kickass pirate radio technocrat in Germany</a>, I assembled the components and instructions to build my own pirate radio USB FM-transmitter&#8230;allowing me to broadcast my own pirate show: &#8220;Tales from the Rusty Pelican&#8221;. You could gather the parts yourself but Jen&#8217;s sells everything you need in his <a href="http://www.kulturserver-berlin.de/home/piradio/shop.htm">store</a>. Support pirates. Buy from (relatively local) pirates.</p>
<p>The instructions for assembly are <a href="www.kulturserver-berlin.de/home/piradio/bilder/senderbausatz_usb.pdf -" target="_blank">here</a>&#8230;and interestingly, completely in german. But I&#8217;ll help out. Please forgive the fuzzy pictures. I left my camera in Chicago and had to make do with the iPhone&#8217;s 2.0 megapixel.</p>
<div id="attachment_39" class="wp-caption alignnone" style="width: 310px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0021.jpg"><img class="size-medium wp-image-39" title="Radio Component List" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0021.jpg" alt="Radio Component List" width="300" height="225" /></a><p class="wp-caption-text">Radio Component List</p></div>
<p>First: lay out all your components and your instructions. You&#8217;ll have:</p>
<p>1 x 510 ? (grün – braun – braun) (green &#8211; brown brown)<br />
1 x 100 k? (braun – schwarz – gelb)  (brown-black-yellow)<br />
2 x 1 M? (braun – schwarz – grün) (brown-black-green)<br />
1 x Kondensator 0,1 µF (0,1) (red condensor)<br />
1 x Kondensator 47 nF (0,047) (light yellow condensor)<br />
1 x Kondensator 4,7 pF (479) (red condensor)<br />
2 x Kondensator 22 pF (22) (brown condesnrors &#8211; look like advil)<br />
1 x Drehko 1,5..15 pF (blue dial)<br />
2 x Transistor BF 246 (F246A) (two black transistors)<br />
1 x Leuchtdiode rot (red diode)<br />
1 x NF-Anschlußleitung  (cable wire for input)</p>
<p>And a red wire to bridge a connection as well as act as antenna!</p>
<div id="attachment_40" class="wp-caption alignnone" style="width: 235px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0022.jpg"><img class="size-medium wp-image-40" title="Component list - Translations" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0022-225x300.jpg" alt="Component list - Translations" width="225" height="300" /></a><p class="wp-caption-text">Component list - Translations</p></div>
<p>Translate all the german instructions using <a href="http://babelfish.yahoo.com/">babelfish</a> and label all your components. Set our your workspace (3rd hand, soldering iron, wet sponge, solder vacuum, solder cleaner, and of course&#8230;solder!)</p>
<p>I&#8217;ve actually mislabeled one of the components. The 1u condensor is mislabled (yellow &#8211; 4th down) with the 0.047 condensor. It was only after examining this <a href="http://www.kulturserver-berlin.de/home/piradio/bilder/usb-aufgebaut-gr.jpg" target="_blank">image</a> and the schematics did I realize the error. Always double check.</p>
<p>Read your schematics, set up your clamp to hold the board in position.</p>
<div id="attachment_41" class="wp-caption alignnone" style="width: 310px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0023.jpg"><img class="size-medium wp-image-41" title="img_0023" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0023.jpg" alt="Schematics + Board" width="300" height="225" /></a><p class="wp-caption-text">Schematics + Board</p></div>
<div id="attachment_42" class="wp-caption alignnone" style="width: 310px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0024.jpg"><img class="size-medium wp-image-42" title="Third Hand steadies the component for you to solder" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0024.jpg" alt="Third Hand steadies the component for you to solder" width="300" height="225" /></a><p class="wp-caption-text">Third Hand steadies the component for you to solder</p></div>
<p>I used the third hand to hold in place all the components. My right hand held the 500 degree soldering iron&#8230;the left held the solder metal&#8230;and since the board was flat, it was up to the hand to hold everything in place. Generally, I soldered one end, then removed the hand, and soldered the other (since it stayed in place). My first project without ANY burns!</p>
<div id="attachment_43" class="wp-caption alignnone" style="width: 310px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0025.jpg"><img class="size-medium wp-image-43" title="Half-way done!" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0025.jpg" alt="Half-way done, adjust the clamp position to solder well" width="300" height="225" /></a><p class="wp-caption-text">Half-way done, adjust the clamp position to solder well</p></div>
<div id="attachment_44" class="wp-caption alignnone" style="width: 310px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0026.jpg"><img class="size-medium wp-image-44" title="Hand + Solder + Clamp Overview" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0026.jpg" alt="Hand + Solder + Clamp Overview" width="300" height="225" /></a><p class="wp-caption-text">Hand + Solder + Clamp Overview</p></div>
<div id="attachment_45" class="wp-caption alignnone" style="width: 310px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0027.jpg"><img class="size-medium wp-image-45" title="Finished Assembly!" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0027.jpg" alt="Finished Assembly!" width="300" height="225" /></a><p class="wp-caption-text">Finished Assembly!</p></div>
<div id="attachment_46" class="wp-caption alignnone" style="width: 310px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0029.jpg"><img class="size-medium wp-image-46" title="Finished Assembly! (side-view)" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0029.jpg" alt="Finished Assembly! (side-view)" width="300" height="225" /></a><p class="wp-caption-text">Finished Assembly! (side-view)</p></div>
<div id="attachment_47" class="wp-caption alignnone" style="width: 310px"><a href="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0030.jpg"><img class="size-medium wp-image-47" title="Radio plugged in" src="http://dominic-tancredi.com/wp-content/uploads/2008/10/img_0030.jpg" alt="Radio plugged in" width="300" height="225" /></a><p class="wp-caption-text">Radio plugged in</p></div>
<p>Now being a pirate isn&#8217;t all blood and glory. Plugging in and transmitting sound waves is <a href="http://en.wikipedia.org/wiki/Pirate_radio">illegal</a> and automatically qualifies you as <a href="http://maddox.xmission.com/images/pirate.html">pirate</a>. </p>
<p>But when the s hits the f, here&#8217;s one more way I fight the dark. </p>
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