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====Here are some interesting usages of sensors:====
 
====Here are some interesting usages of sensors:====
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Seismograph
+
[http://tonyforster.blogspot.com/2011/10/xo-175-seismograph.html Seismograph]
   −
Graphing Pitch and Volume
+
[http://tonyforster.blogspot.com/2011/05/graphing-pitch-and-volume.html Graphing Pitch and Volume]
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