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http://zftlab.org/pages/2016041100.html
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http://www.neufeld.newton.ks.us/electronics/?p=241
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http://www.harbaum.org/till/i2c_tiny_usb/index.shtml
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http://www.lefinnois.net/dotclearen/i...2007/05/13/3-i2c-bus-for-la-fonera#co
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http://www.scienceprog.com/1-wire-protocol-simple-and-easy
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http://www.scienceprog.com/rs232-emulates-i2c-for-24cxx-memory-programming