Hi Karlis I have a production version of the DS18B20 library running on 50 boards with zero errors for the past 3 years. It does use 4 pins for 4 sensors. I have found these sensors extremely reliable and precise. I buy watertight versions in China in a stainless steel sleeve with 1 m wire for $1,50 a piece. Do you want the library? I don't have write permission on jallib.
Sent from my iPad On 2 jan. 2015, at 20:49, Karlis <[email protected]> wrote: > Thanks, > > I'm not too worried about extreme stability etc, as it's going to be > just a test piece for own use, like in a greenhouse, where it's not > very convenient to carry a computer to make configuration changes. > > On Tue, Dec 30, 2014 at 11:25 PM, vasi vasi <[email protected]> wrote: >> Until then, this is an example with more verifications and it signals if the >> 1wire bus (or a single sensor) is disconnected at any point in the running >> program (slight modifications of existing libraries to cover just this case >> - nothing major). Unfortunately, not much help for your case but >> demonstrates the weakness in the official libraries and example. >> >> >> >> On Tue, Dec 30, 2014 at 10:09 PM, vasi vasi <[email protected]> wrote: >>> >>> Also, the crc verification fails somehow. If I disconnect the sensor, the >>> ID and temperature are all displayed as zeros, without any warning or >>> signaling error. >>> >>> The actual library and the application sample have to be rewritten from >>> scratch, as are useful only in ideal situations. I do not recommend them for >>> production. >>> . >>> >>> On Tue, Dec 30, 2014 at 10:03 PM, vasi vasi <[email protected]> wrote: >>>> >>>> Karlis, it was an unfinished library, with emphasis on search method, It >>>> is a brute, unfinished translation from C language.. >>>> I started this because the actual one wire library and the temp. sensor >>>> lib. does not handle all problems that can appear on a one wire bus, >>>> including no sensor presence, or a sensor disappearance in the middle of >>>> the -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/jallib. For more options, visit https://groups.google.com/d/optout.
