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Added public domain notice
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* center pins are attached to analog pins 0 and 1, respectively
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* center pins are attached to analog pins 0 and 1, respectively
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* side pins attached to +5V and ground, respectively.
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* side pins attached to +5V and ground, respectively.
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/RowColumnScanning
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http://www.arduino.cc/en/Tutorial/RowColumnScanning
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see also http://www.tigoe.net/pcomp/code/category/arduinowiring/514 for more
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see also http://www.tigoe.net/pcomp/code/category/arduinowiring/514 for more
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