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  3. How to force DS18B20s to use 12 bit outputs.

How to force DS18B20s to use 12 bit outputs.

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  • R Offline
    R Offline
    robertober
    wrote on last edited by
    #1

    I have a string of 6 DS18x20s on an arduino reader. The output from the Arduino is reporting all sensors with 9 bit resolution. How can I force it to the full 12 bit resolution on the DS18B20s? If one of the sensors is a 9 bit DS18S20, will that force the reader to convert all the other sensors at the same resolution?

    mfalkviddM 1 Reply Last reply
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    • R robertober

      I have a string of 6 DS18x20s on an arduino reader. The output from the Arduino is reporting all sensors with 9 bit resolution. How can I force it to the full 12 bit resolution on the DS18B20s? If one of the sensors is a 9 bit DS18S20, will that force the reader to convert all the other sensors at the same resolution?

      mfalkviddM Online
      mfalkviddM Online
      mfalkvidd
      Mod
      wrote on last edited by
      #2

      @robertober https://forum.mysensors.org/topic/2686/improve-ds18b20-resolution/ has instructions. Don't miss the note on accuracy vs resolution

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      • R Offline
        R Offline
        robertober
        wrote on last edited by
        #3

        Thanks for the feedback. I have several graphs in my XTension Webremote that are showing my temperatures as a seesaw between whole degrees. Accuracy is fine, the half degree C is more than close enough, I just want the graphs to be smoother.

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