Thanks for spending all this time in looking at this issue.
As mentioned to Gabor, dailyrainin may have created a phantom rain event so
I am trying dailyrainindelta.
This looks promising as I did another experiment and dumped water in the
rain gauge to simulate a rain event. and weewx reported 1 mm (Rain Today)
I'll try doing another simulated rainfall except it is -6C at the moment!
--
On Sunday, December 15, 2019 at 1:44:29 AM UTC-5, gjr80 wrote:
>
> Glenn,
>
> I've spent some time working through the atmocom driver and I think I have
> a basic understanding of it now. You are correct in that you need to map
> run to dailyrainin (or one of the other cumulative rain fields).
>
> Your sensor map is using fields from the WU posts so you can ignore the
> Ambient posts (whether you continue to allow your station to post to
> Ambient is up to you, in your current config WeeWX will do nothing with the
> Ambient data). As far as WU is concerned rainin is the rainfall occurring
> in the last hour, you could consider this to be the rain rate. When mapping
> rainin to WeeWX field rain the atmocom driver attempts to take the delta
> between successive rainin values to determine the rainfall in the period.
> This works fine for a source data field that holds the cumulative rain such
> as a daily or yearly rain total but the problem with using rainin as a
> source is that since it is rainfall over the last hour you have rainfall
> dropping off because it fell over an hour ago and rainfall being added that
> just fell in the last period. It is impossible to tell the rainfall in the
> last period without some complexing processing. If you did use rainin
> everything would be fine while there is no rain but once it does start
> raining you will see your rain data going all over the place, certainly not
> something that can be fixed by a simple scaling factor (as you found out).
>
> Try changing you sensor map, restart WeeWX and then either manually
> stimulate your rain gauge or wait for some rain.
>
> One you get some consistent/explainable rain data you may well still have
> a units problem (reading the driver code it is not very units aware) but
> hopefully this will only be a display issue rather than an underlying data
> issue.
>
> Gary
>
> On Sunday, 15 December 2019 13:43:39 UTC+10, Glenn Szlagowski wrote:
>>
>> Success!
>> Thanks for your help-greatly appreciated!
>>
>> There are two types of packets..looks like one goes to ambient weather
>> and the other one goes to WU. Interestingly only every fourth packet goes
>> to ambient.
>>
>> Note that the ambient packet contains extra fields.
>>
>> Here are some samples (sans passwords):
>>
>> Dec 14 21:54:54 glenn weewx[5373]: atmocomudp: MainThread: raw packet:
>> ('passkey=xxxxxx&rev=0x2E708&data=/weatherstation/updateweatherstation.php?ID=ITEHKUMM2&PASSWORD=xxxxxx&indoortempf=70.5&tempf=32.0&dewptf=29.7&windchillf=32.0&indoorhumidity=50&humidity=91&windspeedmph=1.3&windgustmph=2.2&winddir=210&absbaromin=28.84&baromin=29.50&rainin=0.00&dailyrainin=0.04&weeklyrainin=1.24&monthlyrainin=1.32&yearlyrainin=38.87&solarradiation=0.00&UV=0&dateutc=2019-12-15%202:54:44&softwaretype=AMBWeatherV4.0.2&action=updateraw&realtime=1&rtfreq=5
>>
>> ', ('192.168.1.8', 12000))
>>
>> Dec 14 21:55:33 glenn weewx[5373]: atmocomudp: MainThread: raw packet:
>> ('passkey=xxxxxx&rev=0x2E708&data=/endpoint?stationtype=AMBWeatherV4.0.2&PASSKEY=xxxxxx&dateutc=2019-12-15+02:55:32&winddir=330&windspeedmph=1.3&windgustmph=2.2&maxdailygust=11.4&tempf=32.0&hourlyrainin=0.00&eventrainin=0.04&dailyrainin=0.04&weeklyrainin=1.24&monthlyrainin=1.32&yearlyrainin=38.87&baromrelin=29.51&baromabsin=28.85&humidity=92&tempinf=70.5&humidityin=50&uv=0&solarradiation=0.00
>>
>> ', ('192.168.1.8', 12000))
>>
>> If I change the ATMOCOM sensor mapping to dailyrainin, would that work?
>>
>> ---
>>
>>
>> On Saturday, December 14, 2019 at 7:17:57 PM UTC-5, gjr80 wrote:
>>>
>>> Glenn,
>>>
>>> Ok, I see the raw packet issue (should have seen it before actually).
>>> Are you up for making a slight change to atmocomudp.py? If so first make a
>>> backup copy of /usr/share/weewx/user/atmocomudp.py then open
>>> /usr/share/weewx/user/atmocomudp.py in a text editor and change line 283
>>> from:
>>>
>>> loginf('raw packet: %s' % m)
>>>
>>> to
>>>
>>> loginf('raw packet: %s' % (m,))
>>>
>>> Save atmocomudp.py, set log_raw_packets = True in weeewx.conf and
>>> restart WeeWX. Check your log.
>>>
>>> Gary
>>>
>>>
>>>
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