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    Automatic restart of the 1-Wire bus

    Mervis
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    • zorro_66
      zorro_66 last edited by

      I use a Unipi light and would like to use the function automatic reset 1-wire bus where do I find the variable OW_off_1.
      The manual for this function is very poor

      Martin Kudláček 1 Reply Last reply Reply Quote 0
      • Martin Kudláček
        Martin Kudláček administrators @zorro_66 last edited by

        Hello @zorro_66 , the restart of the 1-Wire bus is not available on the UniPi 1.1.

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        • zorro_66
          zorro_66 last edited by

          Ok thanks for the answer.
          How many sensors can a Unipi light handle.
          I have connected 15 sensors now and the 1-wire bus stops after about 5 hours and requires a reset to work again.

          Martin Kudláček 1 Reply Last reply Reply Quote 0
          • Martin Kudláček
            Martin Kudláček administrators @zorro_66 last edited by

            Hello @zorro_66,
            the problem with 1-Wire bus is, that there are no guarantees about its functionality. You may have 10 sensors on 100m bus working just fine and you can have 5 sensors on 20m that will not work at all.

            The general guidelines are:

            1. Avoid stub and star topology (e.g. use our 4 wire sensors)
            2. Use shielded cable and don't lay the cable along the 230V power lines

            For more detailed information, try reading this paper from Maxim: https://www.maximintegrated.com/en/app-notes/index.mvp/id/148

            Best regards,
            Martin

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