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    Topics created by pavel.cernocky

    • P

      1-wire occasionally stops working
      Other Peripherals • • pavel.cernocky

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      Hello,
      I have the same problem but I use NodeRed and EVOK API.
      All the sensors connected directly to my Neuron L203 started showing a constant temperature out of nowhere, which was very dangerous. However, the sensors connected via xG18 were showing correctly.
      Since then I restart the evok with cron task every hour just to be safe. systemctl restart evok.
      1-w-stuck.png

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      Persist variable through restart
      Mervis • • pavel.cernocky

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      T

      @pavel.cernocky You have to define the variable as retain

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      Upload to Mervis DB not working
      Mervis • • pavel.cernocky

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      P

      @tomas_hora OK, I see, that makes sense.
      Thanks a lot for your support.

    • P

      1-wire extension module
      UniPi Extension Modules (Axon & Neuron) • • pavel.cernocky

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      @sidoor It might work but it always depends on in what environment the installation is done. You can just cut the RS45 connectors and do the wiring in the standardized clamps

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      1-wire bus topology
      UniPi 1 - HW Q&A • • pavel.cernocky

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      We do not minimize the total length of the DQ line but we rather have a little longer (twice) total topology weight and minimize the distance of the stubs to achieve linear topology. So the length of the stub is about 1cm max.

      https://www.maximintegrated.com/en/app-notes/index.mvp/id/148