Hi all,
I have a question concerning some insights of weewx.
The setup: Vanatge Pro and a linux box inside the house running weewx, runs
smooth since years.
Now I built in the garden additional a little homemade station with a rain
bucket and two temp sensors (2m and 5cm above ground) and a gamma radiation
sensor.
They are connected to an Arduino, which is connected via a serial
connection to a BananaPi with WLAN.
On the BananPi I run a python script which reads the values from the
Arduino and store them into a InfluxDB and prallel send the values via MQTT
to the Linux box to a
second instance of weewx ("sensweewx" I named it) and there in an extra
database which I can access from the main instance of weewx and get nice
graphs even of the external sensors on the html page.
The BananaPi outside and the Linux machine inside are connected via WLAN as
many people recommend not to wire the BananaPi from the garden (about 3m)
via Ethernet to the Linux box in the house
because of the potential difference.
All runs fine, but it gets interesting if there is some rain and bad
weather to oberservate.
But if heavy rain starts the WLAN connetion will be interrupted sometimes.
This even happens from time to time without any cause, I can't figure out
why.
Sadly if the connection was lost I lost my data of the extrenal sensors at
the disconnection period
.
This seems no problem with the Vantage!? There seems to be in the buid in
logger some kind of storage which holds the data and if I reconnect to
weewx it grabs the data from the Vantage/logger
and I have no gaps in the diagrams and database!? That's cool.
So what could you recommend for my setup to get the data stored at the
BananaPi into the weewx database of my external senors even If I lost
connection?
MQTT seems not the best choice. Are there some ways or drivers in weewx
which looks for the last data it has in the databse for the external
sensors and grab them from the BananaPi?
Can I maybe use the InfluxDB to achive such a behavior of auto getting
missed data and resync to the live data!?
Sorry....a little bit confused....hope it's clear what I want to solve!?
Thanks for any suggstions and ideas!
Regards,
Christian
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