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	<title>todbot blog</title>
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	<link>http://todbot.com/blog</link>
	<description>Random experiments, circuits, code, rapid prototyping, sometimes things to buy, and the odd tune by Tod E. Kurt.</description>
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			<item>
		<title>Momentary Button as On/Off Toggle using 555</title>
		<link>http://todbot.com/blog/2010/01/02/momentary-button-as-onoff-toggle-using-555/</link>
		<comments>http://todbot.com/blog/2010/01/02/momentary-button-as-onoff-toggle-using-555/#comments</comments>
		<pubDate>Sun, 03 Jan 2010 06:29:15 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[blinkm]]></category>
		<category><![CDATA[hardware-hacking]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=755</guid>
		<description><![CDATA[A recent question from a friend who made a really cool BlinkM hoodie was: How can you turn a momentary button press into an on/off toggle?  
There are tons of ways to do this if you like getting into electronics.  Most all work off of some flip-flop like principle.  And while I [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2010/01/02/momentary-button-as-onoff-toggle-using-555/feed/</wfw:commentRss>
		<slash:comments>15</slash:comments>
		</item>
		<item>
		<title>I2CScanner.pde: Arduino as I2C bus scanner</title>
		<link>http://todbot.com/blog/2009/11/29/i2cscanner-pde-arduino-as-i2c-bus-scanner/</link>
		<comments>http://todbot.com/blog/2009/11/29/i2cscanner-pde-arduino-as-i2c-bus-scanner/#comments</comments>
		<pubDate>Sun, 29 Nov 2009 21:28:31 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[arduino]]></category>
		<category><![CDATA[blinkm]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=731</guid>
		<description><![CDATA[One of the challenges of working with I2C (aka &#8220;two-wire&#8221; or &#8220;TWI&#8221; or &#8220;Wire&#8221;) devices is knowing the I2C address of the device.  Older devices have a fixed address, or a &#8220;choose one-of-four&#8221; approach. But newer I2C devices have fully programmable addresses, leading to cases of not knowing what address a device is at.
Fortunately, [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/11/29/i2cscanner-pde-arduino-as-i2c-bus-scanner/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Too Much RFID</title>
		<link>http://todbot.com/blog/2009/11/19/too-much-rfid/</link>
		<comments>http://todbot.com/blog/2009/11/19/too-much-rfid/#comments</comments>
		<pubDate>Thu, 19 Nov 2009 17:11:37 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[hardware-hacking]]></category>
		<category><![CDATA[ramblings]]></category>
		<category><![CDATA[ubicomp]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=718</guid>
		<description><![CDATA[[This post was part of a CrashSpace mailing list discussion on a "proximity t-shirt": a shirt that would light up or similar when other similar t-shirts were nearby.  People were wondering how good RFID was at localized detection of tags.]
Okay so I’m a big RFID nerd, did a lot of consulting work using it. [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/11/19/too-much-rfid/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Scary Shifty Servo Eyeballs</title>
		<link>http://todbot.com/blog/2009/10/07/scary-shifty-servo-eyeballs/</link>
		<comments>http://todbot.com/blog/2009/10/07/scary-shifty-servo-eyeballs/#comments</comments>
		<pubDate>Thu, 08 Oct 2009 03:18:42 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[arduino]]></category>
		<category><![CDATA[blinkm]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=692</guid>
		<description><![CDATA[If you want a slightly different look for your Halloween pumpkin or skull, you can pretty quickly whip something up with a few servos and an Arduino.  Here&#8217;s a set of Scary Shifty Servo Eyeballs, for instance:

It looks around randomly&#8230;what&#8217;s over there!&#8230; wait, what&#8217;s that!
As you can probably tell it&#8217;s a pretty simple arrangement [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/10/07/scary-shifty-servo-eyeballs/feed/</wfw:commentRss>
		<slash:comments>5</slash:comments>
		</item>
		<item>
		<title>Not a sunrise, but a galaxy rise</title>
		<link>http://todbot.com/blog/2009/09/24/not-a-sunrise-but-a-galaxy-rise/</link>
		<comments>http://todbot.com/blog/2009/09/24/not-a-sunrise-but-a-galaxy-rise/#comments</comments>
		<pubDate>Fri, 25 Sep 2009 04:42:58 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[general]]></category>
		<category><![CDATA[video]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=681</guid>
		<description><![CDATA[This is one of the greatest bits of youtubery I&#8217;ve ever seen, and I generally dislike auto-tuned stuff. Carl Sagan&#8217;s Cosmos was one of the most important things to happen to me as a child.  This video &#038; song gives me the shivvers.  And makes me miss Sagan all the more.

I love the [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/09/24/not-a-sunrise-but-a-galaxy-rise/feed/</wfw:commentRss>
		<slash:comments>9</slash:comments>
		</item>
		<item>
		<title>Behold the Crystal Monster</title>
		<link>http://todbot.com/blog/2009/09/22/behold-the-crystal-monster/</link>
		<comments>http://todbot.com/blog/2009/09/22/behold-the-crystal-monster/#comments</comments>
		<pubDate>Tue, 22 Sep 2009 17:13:38 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[arduino]]></category>
		<category><![CDATA[blinkm]]></category>
		<category><![CDATA[lasercut]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=620</guid>
		<description><![CDATA[The Crystal Monster is an art piece created by Beverly Tang and Tod E. Kurt (me).  It&#8217;s on display in the Continental Gallery on 4th &#038; Spring St in downtown Los Angeles. The shape and structure of the Crystal Monster are Beverly&#8217;s design.  I created the lighting and the electronics.  It&#8217;s made [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/09/22/behold-the-crystal-monster/feed/</wfw:commentRss>
		<slash:comments>4</slash:comments>
		</item>
		<item>
		<title>Arduino Serial protocol design patterns</title>
		<link>http://todbot.com/blog/2009/07/30/arduino-serial-protocol-design-patterns/</link>
		<comments>http://todbot.com/blog/2009/07/30/arduino-serial-protocol-design-patterns/#comments</comments>
		<pubDate>Fri, 31 Jul 2009 03:50:38 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[general]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=601</guid>
		<description><![CDATA[[I posted this to the Arduino developer's mailing list, but figured others might find it useful too]
When I first started with Arduino, I thought Serial.available() was a very loose wrapping of the RXC bit in the USCRA register, i.e. if I didn&#8217;t get data out of there fast, it&#8217;d be gone. That led to convoluted [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/07/30/arduino-serial-protocol-design-patterns/feed/</wfw:commentRss>
		<slash:comments>19</slash:comments>
		</item>
		<item>
		<title>Quickie Laser-cut iPhone/iPod Dock</title>
		<link>http://todbot.com/blog/2009/07/15/quickie-laser-cut-iphoneipod-dock/</link>
		<comments>http://todbot.com/blog/2009/07/15/quickie-laser-cut-iphoneipod-dock/#comments</comments>
		<pubDate>Thu, 16 Jul 2009 01:48:39 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[lasercut]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=578</guid>
		<description><![CDATA[I recently got a case for my iPhone and it&#8217;s the kind that precludes the use of the dock.  I kind of like the dock concept, but instead of taking a Dremel to the existing dock, I spent a few minutes drawing up a replacement that could be cut from acrylic scraps on the [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/07/15/quickie-laser-cut-iphoneipod-dock/feed/</wfw:commentRss>
		<slash:comments>19</slash:comments>
		</item>
		<item>
		<title>Laser Cut Laptop Stand (and o&#8217;scope hugger)</title>
		<link>http://todbot.com/blog/2009/06/16/laser-cut-laptop-stand-and-oscope-hugger/</link>
		<comments>http://todbot.com/blog/2009/06/16/laser-cut-laptop-stand-and-oscope-hugger/#comments</comments>
		<pubDate>Wed, 17 Jun 2009 06:55:02 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[hardware-hacking]]></category>
		<category><![CDATA[lasercut]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=552</guid>
		<description><![CDATA[I have one of those USB-based logic analyzers that needs Windows software to make it go.  I had been doing Windows-in-a-window with VMWare, but it&#8217;s kind of a pain.  If I were to use a real Windows laptop, I&#8217;d need a shelf or something for it.  I wanted it above my oscilloscope, [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/06/16/laser-cut-laptop-stand-and-oscope-hugger/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Minimal Arduino with ATmega8</title>
		<link>http://todbot.com/blog/2009/05/26/minimal-arduino-with-atmega8/</link>
		<comments>http://todbot.com/blog/2009/05/26/minimal-arduino-with-atmega8/#comments</comments>
		<pubDate>Wed, 27 May 2009 00:36:37 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[arduino]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=494</guid>
		<description><![CDATA[Or: A good use for old Arduino boards
Like me, you may have a few old Arduino boards or ATmega8 chips (in the boards) laying around from when you were first playing with Arduino.  Those chips can still be really useful as the heart of a tiny &#8220;Minimal Arduino&#8221; setup.
A normal Arduino board contains support [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/05/26/minimal-arduino-with-atmega8/feed/</wfw:commentRss>
		<slash:comments>34</slash:comments>
		</item>
		<item>
		<title>Arduino chip sticker label</title>
		<link>http://todbot.com/blog/2009/05/23/arduino-chip-sticker-label/</link>
		<comments>http://todbot.com/blog/2009/05/23/arduino-chip-sticker-label/#comments</comments>
		<pubDate>Sun, 24 May 2009 04:53:15 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[arduino]]></category>
		<category><![CDATA[lasercut]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=480</guid>
		<description><![CDATA[I&#8217;ve been working with a super minimal Arduino setup recently.  After seeing Alex&#8217;s awesome Arduino/ATmega breadboard header, where he notes there&#8217;s no room on the PCB for pin labeling, I wondered if it would be possible to make a small sticker that goes on the ATmega chip, labeling the pin names. 
Here&#8217;s my first [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/05/23/arduino-chip-sticker-label/feed/</wfw:commentRss>
		<slash:comments>29</slash:comments>
		</item>
		<item>
		<title>Using MaxM with flexible RGB tape</title>
		<link>http://todbot.com/blog/2009/05/21/using-maxm-with-flexible-rgb-tape/</link>
		<comments>http://todbot.com/blog/2009/05/21/using-maxm-with-flexible-rgb-tape/#comments</comments>
		<pubDate>Thu, 21 May 2009 22:41:30 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[blinkm]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=467</guid>
		<description><![CDATA[A single BlinkM MaxM can easily drive a 5 meter (16 ft) roll of the flexible RGB SMD LED tape that&#8217;s used for architectural lighting.  Each roll contains 150 RGB LEDs.

Each LED in the tape is a SMD RGB &#34;5050&#34; LED, capable of putting out about 6000mcd.  The spacing between LEDs is 3.3cm [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/05/21/using-maxm-with-flexible-rgb-tape/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Multiple BlinkM MaxM Blasters on one Master</title>
		<link>http://todbot.com/blog/2009/04/12/multiple-blinkm-maxm-blasters-on-one-master/</link>
		<comments>http://todbot.com/blog/2009/04/12/multiple-blinkm-maxm-blasters-on-one-master/#comments</comments>
		<pubDate>Mon, 13 Apr 2009 04:50:17 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[blinkm]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=451</guid>
		<description><![CDATA[BlinkM MaxMs will be back in stock soon.  Over on our GetSatisfaction area, there&#8217;s a question on how to use multiple BlinkM MaxM &#8220;Blaster&#8221; LED boards with one MaxM &#8220;Master&#8221; driver board.  It&#8217;s possible and only just a little tricky.  The Blaster board is powered by the 5V voltage regulator built-in to [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/04/12/multiple-blinkm-maxm-blasters-on-one-master/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Tiny Servos as Continuous Rotation Gearmotors</title>
		<link>http://todbot.com/blog/2009/04/11/tiny-servos-as-continuous-rotation-gearmotors/</link>
		<comments>http://todbot.com/blog/2009/04/11/tiny-servos-as-continuous-rotation-gearmotors/#comments</comments>
		<pubDate>Sat, 11 Apr 2009 07:10:27 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[arduino]]></category>
		<category><![CDATA[hardware-hacking]]></category>
		<category><![CDATA[toys]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/?p=400</guid>
		<description><![CDATA[I&#8217;ve been exploring various types of gearmotors. DC motors by themselves spin too fast and have low torque.  Gearmotors are motors with a gearbox that slows down the high speed of the motor and produces higher torque.  Most gearmotors are pretty expensive though.  I want a really cheap, almost throw-away, source of [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/04/11/tiny-servos-as-continuous-rotation-gearmotors/feed/</wfw:commentRss>
		<slash:comments>23</slash:comments>
		</item>
		<item>
		<title>New RoombaComm 0.96</title>
		<link>http://todbot.com/blog/2009/03/26/new-roombacomm-096/</link>
		<comments>http://todbot.com/blog/2009/03/26/new-roombacomm-096/#comments</comments>
		<pubDate>Thu, 26 Mar 2009 21:02:40 +0000</pubDate>
		<dc:creator>todbot</dc:creator>
				<category><![CDATA[general]]></category>
		<category><![CDATA[roomba]]></category>

		<guid isPermaLink="false">http://todbot.com/blog/2009/03/26/new-roombacomm-096/</guid>
		<description><![CDATA[Paul Bouchier has kindly spent time and updated the Java RoombaComm library.  Not only did he add support for the newer 5xx series Roombas, but he fixed a lot of bugs, added new features, made things work easier under Windows, and generally cleaned up the mess of code I had created.  
Check out [...]]]></description>
		<wfw:commentRss>http://todbot.com/blog/2009/03/26/new-roombacomm-096/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
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