Hi Gabor
Thanks for your help.
I just came in from outside after tipping about a 1 ml of water into my
rain gauge as an experiment.
I wanted to see what my test bed weewx would report. On the rpi it shows
6.1 mm and on my old linux notebook it showed the identical 6.1 mm rain...a
fail once again..
Considering that my weather station is 3m above the ground, I taped a
measuring cup onto a long pole and tipped the water in.
You mentioned that there was a possibility of an extended rain event that
might alter the rain data so I checked out one of my weather templates.
Charting is done by WU:
[image: Capture.PNG]
Note on the chart that rain is 1 ml and rain rate is 6.1 mm.
Could it be that weewx is reporting *rain rate* instead of *daily rain*?
[image: weewx capture.PNG]
We can assume WU is correct because it corresponds to what my weather
station display console is showing.
Here is the ATMOCOM driver in weewx_conf:
AtmocomUDP]
driver = user.atmocomudp
udp_address = 0.0.0.0
udp_port = 12000
udp_timeout = 90
share_socket = True
station_units = weewx.US
log_raw_packets = False
[[sensor_map]]
outTemp = tempf.ITEHKUMM2
outHumidity = humidity.ITEHKUMM2
UV = UV.ITEHKUMM2
radiation = solarradiation.ITEHKUMM2
*rain = rainindelta.ITEHKUMM2*
windDir = winddir.ITEHKUMM2
pressure = absbaromin.ITEHKUMM2
windSpeed = windspeedmph.ITEHKUMM2
inHumidity = indoorhumidity.ITEHKUMM2
inTemp = indoortempf.ITEHKUMM2
windGust = windgustmph.ITEHKUMM2
Unfortunately when I try to enable log raw packets weewx crashes so I can't
determine the correct header for daily rain or total rain.
---
On Saturday, December 14, 2019 at 10:08:02 AM UTC-5, Gábor Szabados wrote:
>
> Hi,
>
> Look at the days when you see rain. Does it distribute the same way on
> WeeWX and WU?
>
> Let's say WU is correct and the ATMOCOM driver has an issue. So WeeWX
> receives a wrong value or amount of values.
>
> I have seen before with interceptor, that it has received old packets for
> some reason. It caused the daily total rain value to jump let's say from
> 0.3 to 0.2 what shouldn't happen in reality. The Interceptor driver was
> written to handle it as a change of day or change of year, it wasn't
> expecting similar in any other case. The worst part was that when from 0.2
> it received a 0.3 value, so it has triggered another +0.1 for WeeWX's daily
> count. It caused the WeeWX values to increase/change in a different way
> than the WU values.
> WU showed the rain stopped at 10AM, meanwhile WeeWX showed rain all day
> long.
>
> Solution in my case was to add an extra line to the interceptor to check
> time stamps of the packets and refuse the old ones to be processed.
>
> Best Regards,
>
> Gabor Szabados
>
>
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