Am 03.07.2016 um 17:14 schrieb Guy COLIN:
>
> OneWire ds(11); // on pin 10 (a 4.7K resistor is necessary)
>
A 1,5k resistor to 5V! Or 1k to 3V.
> ds.write(0x44, 1); // start conversion, with parasite power on at
> the end
>
Please retry with a statically powered chip.
When you use parasite power and read the out the chip prematurely it
means the chip is *unpowered* right at the moment when you want to read
out the chip. Because it still wants to draw 1mA but you don't supply
this needed current to it. The initial bus reset of a readout command is
enough to de-power a DS18B20 which is in conversion mode.
Kind regards
Jan
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