Getting real time into C-Bus?

Discussion in 'C-Bus Wired Hardware' started by fleetz, Mar 6, 2007.

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  1. fleetz

    fleetz

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    What is the most cost effective device in the range to get real time onto C-bus?

    Cheers,

    Fleetz
     
    fleetz, Mar 6, 2007
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  2. fleetz

    Richo

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    What do you mean by "real time"?
     
    Richo, Mar 6, 2007
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  3. fleetz

    Newman

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    If you are asking the question "What is the cheapest C-Bus device that includes a real-time clock and can send those messages out onto C-Bus?" then the answer is the 5500PACA.
     
    Newman, Mar 6, 2007
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  4. fleetz

    fleetz

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    Thanks Newman....yes that what meant to ask.

    Didn't want to put as eloquently as you did! :D

    Also didn't want to put cheap and C-Bus in the same sentence!

    Cheers,

    Fleetz
     
    fleetz, Mar 6, 2007
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  5. fleetz

    ashleigh Moderator

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    DONT use a 5500PACA on its own!

    It has no user interface device to allow you to CHANGE the time in it.

    And even though it has a crystal, these drift. A standard 50 ppm crystal can lead to a worst case drift of > 10 minutes per year !

    You need something else as well. A B&W touchscreen will also allow the timekeeping and allows you to change the time if its drifted off.

    (And for those who howl about wanting better accuracy.... its all down to $. If you want an atomic clock, if might be out of your budget!)
     
    ashleigh, Mar 6, 2007
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  6. fleetz

    tobex

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    Accuracy is no substitute for precision.
     
    tobex, Mar 6, 2007
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  7. fleetz

    JohnC

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    It's funny how you can buy a $5 chinese LCD or Quartz clock or watch from your local dollar shop that keeps perfect time...

    ;) :D
     
    JohnC, Mar 8, 2007
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  8. fleetz

    ashleigh Moderator

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    Well actually they don't keep perfect time.

    When we fiddle with a watch we never remember we did it.

    And those $5 chinese watches that my kids have had drifted terribly. Some of them were completely useless because they were drifting 1/2 hour per week!
     
    ashleigh, Mar 8, 2007
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