2016-07-03 17:14 GMT+02:00 Guy COLIN <guy.co...@gmail.com>:
> DS18B20

Agree to Jans comment.

Have a look at the 18B20 spec ! 85 Degree is a 18B20 code to tell
something went wrong.

OWFS is completely right to send the code out.

Very poor design of 18B20. If there is a design to tell there was an
error, they should have use something else,
+ 155 degrees
- 300 degrees

or else. Maybe simply be quiet.

To use a temperature, which could also be measured is not the best idea.

Typically temperatures don't change higher than 5 degrees between two readings.

We filter :

if Temp = 85 and last reading more then 5 degrees away : ignore the value.

Of course, you could also fix your supply issue, ;-) .

Regards
Ekkehard

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