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      <title>In the classroom - Twine community</title>
      <link>http://minervakestner.com/</link>
      <pubDate>Mon, 27 Apr 2026 18:28:52 +0000</pubDate>
          <description>In the classroom - Twine community</description>
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        <title>Using a photo-cell to trigger Twine (two ways)</title>
        <link>http://minervakestner.com/discussion/107/using-a-photo-cell-to-trigger-twine-two-ways</link>
        <pubDate>Thu, 22 Nov 2012 09:32:21 +0000</pubDate>
        <category>In the classroom</category>
        <dc:creator>Bill Spencer</dc:creator>
        <guid isPermaLink="false">107@/discussions</guid>
        <description><![CDATA[1)  I connected a simple photo cell to the contacts of the moisture sensor, and it accurately responds to light shinning on it, showing "wet" when the light is on.<br />2)  The same experiment worked when the photo cell was connected to the GND and IN points on the Breakout Board.  Light will cause the switch to close.<br /><br />This should make it easy to extend the uses of Twine.]]>
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