Everybody convinced me to add a tipping rain gauge to my piezo WS85
station...arrives today...
I'd like to figure out a reasonable way to have both piezo and tipping
gauge sets of data saved in weewx so I can display them overlaid on graphs
etc. for comparison and to help me 'try' to tune the piezo settings.
Since weewx only supports one rain sensor without doing hacks like reusing
things like hail in the schema, I'm strongly leaning toward extending my
ecowitt station schema with more rain-related fields to be able to support
two rain sensors.
Looking for suggestions on what db elements might make sensor to add....
Currently the default weewx schema includes:
- rain
- rainRate
- rainBatteryStatus
So I'm thinking of simply adding matching piezo elements:
- p_rain
- p_rainRate
- p_rainBatteryStatus
That seem reasonable ?
Assuming so, I'd add columns to the db and assign them to the appropriate
unit groups to match per the docs too (?)
Now to set the tipping sensor as the primary....
Since I only have the piezo sensor currently, I have the following mapping
to set the piezo sensor items from the driver as primary:
[[field_map_extensions]]
# use WS85 as primary wind/rain sensor
rain = p_rain
stormRain = p_rainevent
rainRate = p_rainrate
dayRain = p_rainday
weekRain = p_rainweek
monthRain = p_rainmonth
yearRain = p_rainyear
windBatteryStatus = ws85_batt
The driver seems to internally use t_xyz elements which I'm guessing is
tipping_xyz notionally, so to change the map to set the WH40BH as the
primary sensor, would I want to do something like the following ?
[[field_map_extensions]]
# use WH40BH as primary rain sensor
rain = t_rain
stormRain = t_rainevent
rainRate = t_rainrate
dayRain = t_rainday
weekRain = t_rainweek
monthRain = t_rainmonth
yearRain = t_rainyear
rainBatteryStatus = wh40_batt
# use WS85 as secondary rain sensor
p_rain = p_rain
p_stormRain = p_rainevent
p_rainRate = p_rainrate
p_dayRain = p_rainday
p_weekRain = p_rainweek
p_monthRain = p_rainmonth
p_yearRain = p_rainyear
# still use WS85 for wind sensor battery status
windBatteryStatus = ws85_batt
Does that seem like a reasonable approach ?
I know the ecowitt gear has more signal status type elements available in
the driver, but for the moment I'd just like to save and compare the two
sensors rain and rain rate.
Make sense ? Any suggestions ?
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