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Author Topic: DS18B20 and MOSFET  (Read 610 times)
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Does anyone have any hardware circuits or Arduino code to power
a OneWire bus with a MOSFET, rather than a pull-up resistor.
I'm really not sure of the timing needed to actively drive the bus.

Thanks - Will
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Holland
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You can't power the 1-wire bus with a mosfet, you need a pull-up resistor. Why shouldn't you use a pull-up resistor?
The data line of 1-wire pulls the (5V) line low, to prevent short-circuit you'll need a resistor.
See also http://playground.arduino.cc/Learning/OneWire
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