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A rain bug in Vantage data?
#2

(20-11-2018, 23:31)41south Wrote:  Hi Werk

I have an issue with rain data using Weewx that I think is related to WeatheDuino.

Please forgive me for answering with another question. Do you think that if there was a problem with the implementation of rainfall readings in the Davis protocol used by Weatherduino, during all these years no one would have noticed it and there would not be a hundred topics questioning about it?

What is sent by the any Davis station is the number of clicks that have occurred since the beginning of the meteorological day, not a total in any unit, which is calculated by the weather software, multiplying the number the clicks per the values of each tip bucket, and then converted to the unit chosen by the user (mm or in).

WeeWx, contrary to all other weather software's that I know about, have a very particular way of getting data from the Davis weather station. All the others, only read data from the data logger at start, and check if there are any new records stored compared to the newest stored record by the software, weewx by the contrary tries to read data from the data logger ship almost constantly during normal operation.
Here is an hint I already said to you somewhere in another post. Try to disable this behaviour in Weewx software, I know it is possible, but I don't remember where it can be done. This not means disabling the ability to fetch data from the Data Logger when the software starts, its about just rely on LOOP data during normal operation.

For you to be sure that there isn't any problem with the implementation of the rainfall readings, try this simple test during some time: Use Cumulus1 which uses a standard Davis dll (provided by Davis) or even the official Davis Software (Weather Link).

Hope I have helped.

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Messages In This Thread
A rain bug in Vantage data? - by 41south - 20-11-2018, 23:31
RE: A rain bug in Vantage data? - by werk_ag - 22-11-2018, 02:30
RE: A rain bug in Vantage data? - by 41south - 22-11-2018, 04:02
RE: A rain bug in Vantage data? - by werk_ag - 22-11-2018, 05:06
RE: A rain bug in Vantage data? - by werk_ag - 22-11-2018, 05:28
RE: A rain bug in Vantage data? - by 41south - 22-11-2018, 06:55
RE: A rain bug in Vantage data? - by 41south - 22-11-2018, 07:18
RE: A rain bug in Vantage data? - by werk_ag - 22-11-2018, 19:48
RE: A rain bug in Vantage data? - by 41south - 22-11-2018, 22:20
RE: A rain bug in Vantage data? - by werk_ag - 23-11-2018, 00:49
RE: A rain bug in Vantage data? - by engolling - 22-11-2018, 23:32
RE: A rain bug in Vantage data? - by werk_ag - 23-11-2018, 00:23
RE: A rain bug in Vantage data? - by 41south - 23-11-2018, 01:33
RE: A rain bug in Vantage data? - by engolling - 23-11-2018, 07:31
RE: A rain bug in Vantage data? - by 41south - 23-11-2018, 21:52
RE: A rain bug in Vantage data? - by werk_ag - 24-11-2018, 00:55
RE: A rain bug in Vantage data? - by 41south - 24-11-2018, 01:45
RE: A rain bug in Vantage data? - by engolling - 25-11-2018, 11:49
RE: A rain bug in Vantage data? - by werk_ag - 25-11-2018, 21:50



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