DS18B20 Maxim 1-wire temperature sensors

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DS18B20 Maxim 1-wire temperature sensors
DS18B20 datasheet$1.00 each for chip, $3.00 each for waterproof sensor
one-wire protocol
https://arduino-info.wikispaces.com/Brick-Temperature-DS18B20 multiple
OneWire tutorial another better library
color code for encased DS18B20 sensor red=vcc,black=gnd,yellow=data

DS18B20-pinout.jpg

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