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	<title>Hack a Day &#187; tea</title>
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		<title>Hack a Day &#187; tea</title>
		<link>http://hackaday.com</link>
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		<title>Candle stop motion: how&#8217;s it done?</title>
		<link>http://hackaday.com/2010/06/18/candle-stop-motion-hows-it-done/</link>
		<comments>http://hackaday.com/2010/06/18/candle-stop-motion-hows-it-done/#comments</comments>
		<pubDate>Fri, 18 Jun 2010 17:03:46 +0000</pubDate>
		<dc:creator>Mike Szczys</dc:creator>
				<category><![CDATA[HackIt]]></category>
		<category><![CDATA[candles]]></category>
		<category><![CDATA[gimp]]></category>
		<category><![CDATA[pong]]></category>
		<category><![CDATA[real or fake]]></category>
		<category><![CDATA[stop motion]]></category>
		<category><![CDATA[tea]]></category>

		<guid isPermaLink="false">http://hackaday.com/?p=25220</guid>
		<description><![CDATA[[Ollie] tipped us off about a stop motion video that uses a grid of tea candles to animate some classically pixellated game graphics. The image above is obviously a game of pong in progress. It&#8217;s interesting to watch but for us the fun is trying to decide how it&#8217;s done. Click through the break to see the [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=hackaday.com&amp;blog=4779443&amp;post=25220&amp;subd=hackadaycom&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><img class="alignnone size-full wp-image-25221" title="candle-stopped-motion" src="http://hackadaycom.files.wordpress.com/2010/06/candle-stopped-motion.jpg" alt="" width="470" height="345" /></p>
<p>[Ollie] tipped us off about a stop motion video that uses a grid of tea candles to animate some classically pixellated game graphics. The image above is obviously a game of pong in progress. It&#8217;s interesting to watch but for us the fun is trying to decide how it&#8217;s done. Click through the break to see the video and discuss the methodology.</p>
<p><span id="more-25220"></span></p>
<span style="text-align:center; display: block;"><a href="http://hackaday.com/2010/06/18/candle-stop-motion-hows-it-done/"><img src="http://img.youtube.com/vi/EG127HdhWZQ/2.jpg" alt="" /></a></span>
<p>Perhaps the most obvious method used here is plain old stop motion animation. You light the candles, take a picture, snuff the ones you don&#8217;t need and light new ones, and repeat. There&#8217;s also the thought that the creator let the video roll, walked through his planned frames, then edited out the filler video after the fact.</p>
<p>To us, one thing is missing. Whenever we put out a tea candle that&#8217;s been burning for some time it tends to let off a rather vigorous column of smoke. We don&#8217;t see that in the video. Our thought is that you take a picture of all the candles before they&#8217;re lit. You then take several shots of all the candles lit. The multiple shots are so that the video shows flickering flames. From there an image processing program can be used along with a layer mask to digitally stuff the candles that you don&#8217;t need for each frame. Below is our attempt at this using <a href="http://www.gimp.org/">The Gimp</a>. But we want to know how you would have done it so leave us a comment.</p>
<p><img class="alignnone size-full wp-image-25222" title="candles-H" src="http://hackadaycom.files.wordpress.com/2010/06/candles-h.jpg" alt="" width="470" height="345" /></p>
<p><img class="alignnone size-full wp-image-25223" title="candles-A" src="http://hackadaycom.files.wordpress.com/2010/06/candles-a.jpg" alt="" width="470" height="345" /></p>
<p><img class="alignnone size-full wp-image-25224" title="candles-C" src="http://hackadaycom.files.wordpress.com/2010/06/candles-c.jpg" alt="" width="470" height="345" /></p>
<p><img class="alignnone size-full wp-image-25225" title="candles-K" src="http://hackadaycom.files.wordpress.com/2010/06/candles-k.jpg" alt="" width="470" height="345" /></p>
<p>[via <a href="http://www.collegehumor.com/video:1937604">College Humor</a>]</p>
<br />Filed under: <a href='http://hackaday.com/category/hackit/'>HackIt</a>  <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/hackadaycom.wordpress.com/25220/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/hackadaycom.wordpress.com/25220/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/hackadaycom.wordpress.com/25220/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/hackadaycom.wordpress.com/25220/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/hackadaycom.wordpress.com/25220/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/hackadaycom.wordpress.com/25220/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/hackadaycom.wordpress.com/25220/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/hackadaycom.wordpress.com/25220/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/hackadaycom.wordpress.com/25220/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/hackadaycom.wordpress.com/25220/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/hackadaycom.wordpress.com/25220/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/hackadaycom.wordpress.com/25220/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/hackadaycom.wordpress.com/25220/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/hackadaycom.wordpress.com/25220/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=hackaday.com&amp;blog=4779443&amp;post=25220&amp;subd=hackadaycom&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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		<slash:comments>55</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Mike Szczys</media:title>
		</media:content>

		<media:content url="http://hackadaycom.files.wordpress.com/2010/06/candle-stopped-motion.jpg" medium="image">
			<media:title type="html">candle-stopped-motion</media:title>
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			<media:title type="html">candles-A</media:title>
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			<media:title type="html">candles-C</media:title>
		</media:content>

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	</item>
		<item>
		<title>Solar cells from donuts and tea</title>
		<link>http://hackaday.com/2009/03/19/solar-cells-from-donuts-and-tea/</link>
		<comments>http://hackaday.com/2009/03/19/solar-cells-from-donuts-and-tea/#comments</comments>
		<pubDate>Thu, 19 Mar 2009 19:05:47 +0000</pubDate>
		<dc:creator>Caleb Kraft</dc:creator>
				<category><![CDATA[solar hacks]]></category>
		<category><![CDATA[donut]]></category>
		<category><![CDATA[solar]]></category>
		<category><![CDATA[tea]]></category>
		<category><![CDATA[titanum]]></category>

		<guid isPermaLink="false">http://hackaday.com/?p=9811</guid>
		<description><![CDATA[It sounds unbelievable, but it is true. You can harvest most of what you need for a simple solar cell from powdered donuts and tea. Powdered donuts have nanoparticles of titanium dioxide which is a &#8220;high band gap semi conductor&#8221;.  This means that it can be used to make solar cells. The tea is simply [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=hackaday.com&amp;blog=4779443&amp;post=9811&amp;subd=hackadaycom&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<span style="text-align:center; display: block;"><a href="http://hackaday.com/2009/03/19/solar-cells-from-donuts-and-tea/"><img src="http://img.youtube.com/vi/bVwzJEhMmD8/2.jpg" alt="" /></a></span>
<p>It sounds unbelievable, but it is true. You can harvest most of what you need for a simple <a href="http://blog.wired.com/wiredscience/2009/03/donutsolar.html">solar cell from powdered donuts and tea</a>. Powdered donuts have nanoparticles of <a href="http://en.wikipedia.org/wiki/Titanium_dioxide">titanium dioxide</a> which is a &#8220;high band gap semi conductor&#8221;.  This means that it can be used to make solar cells. The tea is simply used to dye the material so it can pick up the visible spectrum. The process is a bit too involved to be something you would just toss together in the field, but it&#8217;s cute nonetheless.</p>
<br />Posted in solar hacks  <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/hackadaycom.wordpress.com/9811/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/hackadaycom.wordpress.com/9811/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/hackadaycom.wordpress.com/9811/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/hackadaycom.wordpress.com/9811/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/hackadaycom.wordpress.com/9811/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/hackadaycom.wordpress.com/9811/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/hackadaycom.wordpress.com/9811/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/hackadaycom.wordpress.com/9811/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/hackadaycom.wordpress.com/9811/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/hackadaycom.wordpress.com/9811/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/hackadaycom.wordpress.com/9811/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/hackadaycom.wordpress.com/9811/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/hackadaycom.wordpress.com/9811/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/hackadaycom.wordpress.com/9811/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=hackaday.com&amp;blog=4779443&amp;post=9811&amp;subd=hackadaycom&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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		<slash:comments>41</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Caleb Kraft</media:title>
		</media:content>
	</item>
		<item>
		<title>Tea cup theremin</title>
		<link>http://hackaday.com/2008/07/03/tea-cup-theremin/</link>
		<comments>http://hackaday.com/2008/07/03/tea-cup-theremin/#comments</comments>
		<pubDate>Fri, 04 Jul 2008 02:40:00 +0000</pubDate>
		<dc:creator>Juan Aguilar</dc:creator>
				<category><![CDATA[misc hacks]]></category>
		<category><![CDATA[conductive technology]]></category>
		<category><![CDATA[ConductiveTechnology]]></category>
		<category><![CDATA[conductivity]]></category>
		<category><![CDATA[maxmsp]]></category>
		<category><![CDATA[tea]]></category>
		<category><![CDATA[teacup]]></category>
		<category><![CDATA[theremin]]></category>

		<guid isPermaLink="false">http://hackaday.iheartcashews.com:8181/2008/07/03/tea-cup-theremin/</guid>
		<description><![CDATA[Hardware modding can take you to some strange places: sometimes, you think of really useful improvements to your most practical devices. Other times, you turn a cup of tea into a theremin. This is true at least for [Kyle McDonald], who immersed the L/R leads of an 1/8&#8243; cable in a cup of tea, and [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=hackaday.com&amp;blog=4779443&amp;post=2187&amp;subd=hackadaycom&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><object width="450" height="333"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://www.vimeo.com/moogaloop.swf?clip_id=432353&amp;server=www.vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=&amp;fullscreen=1" /><embed src="http://www.vimeo.com/moogaloop.swf?clip_id=432353&amp;server=www.vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=&amp;fullscreen=1" type="application/x-shockwave-flash" allowfullscreen="false" allowscriptaccess="always" width="450" height="333"></embed></object><br />Hardware modding can take you to some strange places: sometimes, you think of really useful improvements to your most practical devices. Other times, you <a href="http://www.vimeo.com/432353?pg=embed&amp;sec=432353">turn a cup of tea into a theremin</a>. This is true at least for [Kyle McDonald], who immersed the L/R leads of an 1/8&#8243; cable in a cup of tea, and connected it to a computer running <a href="http://www.flickr.com/photos/kylemcdonald/2126494098/">Max/MSP with a special patch</a>. The result is a working, miniature theremin you can drink after you&#8217;re done playing. This process should work with any liquid, so feel free to use beer, cola, water, or anything you think will taste better after you&#8217;ve run a small charge through it. </p>
<p>[via <a href="http://matrixsynth.blogspot.com/2008/07/theremug.html">Matrixsynth</a>]</p>
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		<slash:comments>9</slash:comments>
	
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			<media:title type="html">juanaguilar</media:title>
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