Recent content by wyleu

  1. W

    Shorting a one-wire bus?

    Forgive me, but I can find no mention of bus shorting on the attached data sheet.
  2. W

    Shorting a one-wire bus?

    I'm looking to put together a python based one-wire application functioning on both linux and windows at the very least. Since i'm starting from the lowest of the low I am keen to know quite how the various one-wire interfaces (RS-232, USB) behave when all the bus wires are shorted or immersed...
  3. W

    Humidity/Thermometer/Solar

    Thanks for the reply, so to sum up: Channel 0 is the Power supply voltage Channel 1 is the humidity sensor voltage Channel 2 is the Solar sensor. What kind of full range deflection should you get on the solar sensor?
  4. W

    Humidity/Thermometer/Solar

    Of the three voltages displayed in the dallas OneWireViewer corresponds to the solar output? The Oneviewer app quotes a humidity reading for the 2438 how does it know this? Surely it is only measuring the voltage at the Vad pin? I have read the Dallas App note...
  5. W

    temperature measuring element of 18s20

    I can think of earth loops as one problem this might allievate, but it might have issues with UK building control if wiring outside the equipotential zone (for that read house) is not bonded properly. Be interested to know the answer from some authorative source. If you accept the limitations...
  6. W

    temperature measuring element of 18s20

    I hve just received a bunch of 18S20's for temperature measurement. I assume that the temperature measuring element is theramlly linked to the Ground Pin so if I wish to measure a pipe temperature I need to make sure there is good themal contact between the Ground pin and the pipe. Is this...
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