Create README.md

PaulStoffregen · Jan 25, 2016 · 75b6c57 · 75b6c57
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+Fork on 1-Wire library with ability to use internal AVR (including arduino) pull-up resistor.
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+No external pull-up resistor required on a board for 1-wire devices as a result.
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+Details here
+http://wp.josh.com/2014/06/23/no-external-pull-up-needed-for-ds18b20-temp-sensor/