oe7drt-website

dominic

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Installation of the gateway

This is super easy, there is a temperature and humidity sensor with a ~70 cm long cable (and a ~1 m USB cable, which I don't use). I plugged the gateway into my Raspberry Pi 4 directly and finished the setup on my smartphone. I won't cover this here, the process is really super easy and straightforward.

I will continue with the main software, the logic of most personal weather stations: WeeWX.

Installation of WeeWX on the Raspberry Pi 4

As a little sidenote, I am using the testing branch of Debian, which is Debian GNU/Linux trixie/sid at the moment.

First off, a database is needed

I use a MySQL database for the weather data which should be installed before we connect WeeWX to a database.

$ sudo apt install mariadb-server
$ sudo mysql_secure_installation
$ mysql -uroot -p

You can also use graphical management software to manage your mysql databases, but you would need to secure your installation yourself.

$ sudo apt-get install phpmyadmin

That would also pull in a whole lot of packages like PHP.

{{< alert >}} Don't allow access from the internet to your management software! {{< /alert >}}

As I had a backup of my old installation I will import the old data into my fresh database setup:

$ mysql -uweewx -p'{fancy-password}' weewx < weewx-backup.sql

The backup was done like:

$ mysqldump -u weewx -p weewx > weewx-backup.sql

I had data from 2022-01-01 to 2023-12-10, which were about 120MB.

Some information about security

{{< alert >}} If your setup is focused on security, my approach is probably not suited for you! {{< /alert >}}

I will install the packaged version of WeeWX -- which is version 4.10.2 at this moment but the main concern is the user which runs the installed application. The installed application will be run by the root user.

Since this is a dedicated Raspberry Pi that will never run something else (it also has its own MariaDB server running)... I will live with it.

In contrast, my last WeeWX installation was on my webserver (it only had to pull the weather data via an API from a cloud network) and was setup with a dedicated user for that particular task (running the daemon and publishing the website directly on the server).

The new setup will also publish directly to my webserver and again, a dedicated user is used for this on the webserver. Authentication is done via ssh and a dedicated ssh key on the Raspberry Pi.

Back to topic, I was about to install WeeWX on the Raspi. Follow the instructions on their website and all is fine 😉

Nonetheless, I leave the code snippets over here:

$ wget -qO - https://weewx.com/keys.html | sudo gpg --dearmor --output /etc/apt/trusted.gpg.d/weewx.gpg
$ wget -qO - https://weewx.com/apt/weewx-python3.list | sudo tee /etc/apt/sources.list.d/weewx.list
$ sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade
$ sudo apt-get install weewx

The third line is quite extended because I had to update several packages on my Raspberry Pi first.

They suggest to look at the WeeWX logs via sudo tail -f /var/log/syslog -- that is actually not the best idea on newer linux distributions. Newer distributions use systemd and it comes with its own userspace tools to obtain the journal (the logs).

I use either journalctl -fe or specific to WeeWX journalctl -feu weewx.

They also use the init files for starting and stopping; if you want to use systemd for that, you would typically start and stop WeeWX like this:

$ sudo systemctl start weewx(.service)
$ sudo systemctl stop weewx(.service)

As you can see, you can append .service to the service name or just not use it. This is not needed though, as there is no unit file as per se, but systemd knows the actual init file and internally generates a unit file.

There is actually a unit file at Github.

As my old installation was on my webserver I had to adopt another script to work properly. You can find that script on my older article about [moving WeeWX to OpenBSD]({{< ref "41-moving-weewx-to-openbsd" >}}).

But we drift off again...

Install weewx-gw1000 driver

$ wget -P /var/tmp https://github.com/gjr80/weewx-gw1000/releases/download/v0.6.0b2/gw1000-0.6.0b2.tar.gz
$ sudo wee_extension --install=/var/tmp/gw1000-0.6.0b2.tar.gz

Taken from the README file, go and have a look at it, as you might need to change the config.

I tested the driver with

$ PYTHONPATH=/usr/share/weewx python -m user.gw1000 --test-driver

and finally updated the WeeWX configuration

$ sudo wee_config --reconfigure --driver=user.gw1000

{{< alert "circle-info" >}} You should check the WeeWX configuration file if everything got updated correctly and you may probably fill in an IP address. {{< /alert >}}

I tried to use it as a weewx-service but ended with the normal driver setup.

A final restart of WeeWX whenever you change your config file.

$ sudo systemctl restart weewx

Install the Weather Data Center Skin

$ wget -O "/tmp/weewx-wdc.zip" https://github.com/Daveiano/weewx-wdc/releases/download/v3.4.0/weewx-wdc-v3.4.0.zip
$ mkdir /tmp/weewx-wdc
$ unzip /tmp/weewx-wdc.zip -d /tmp/weewx-wdc/
$ sudo wee_extension --install /tmp/weewx-wdc/

Install the weewx-xaggs extension

Install and configure as shown on the wiki page.

Install the weewx-forecast extension

There is also a wiki page for this. Read carefully and my observation is: use Openweathermap.

I had shitloads of problems trying to use the forecast of WUnderground and I finally ended up using Openweathermap (which worked out of the box).

WUnderground

I tried to install this initially because it was the cheapest solutions. You get free forecast information if you provide your weather data to their network. I'm not sure if this is the official way because I read this somewhere.

Openweathermap

This is also a good solution because it works instantly and it is not as expensive as the other options, the free available API calls should be enough for a personal weather station.

The default options in the skin.conf file work fine for me, don't forget to comment them out.

Uploading data to other weather websites/services

Ecowitt

Ecowitt publishes the data on their network: https://www.ecowitt.net/home/index?id=163378

You need to be logged in to view other stations though.

WUnderground

Because I already registered an account for the forecasts I decided to keep the account and push my weather data to their network.

I thought I could upload my historical data with wunderfixer but it did not got imported.

$ for month in {1..12}; do for i in {1..31}; do sudo wunderfixer -d 2022-$month-$i; done; done
$ for month in {1..12}; do for i in {1..31}; do sudo wunderfixer -d 2023-$month-$i; done; done

This is very theoretical because I wasn't able to import all my past data. I won't look into this any further because I really don't care and I personally don't like the WUnderground website that much.

My station can be found here: https://www.wunderground.com/dashboard/pws/ILNGEN12/

AWEKAS

AWEKAS is an Austrian weather map system (Automatisches Wetterkarten System). I found this site actually while looking for information about the different forecast models mentioned in the forecast plugin above (well, not direclty...).

Anyway, they provide a paid website for your weather data, so if you don't want to host your own website this might be interesting to you. The price is currently at 3.83 € (excl. VAT) per month (that would be ~50 € a year) -- forecasts are pulled from World Weather Online and include a 3-day preview (only).

What I liked on AWEKAS is, that they blocked my air pressure measurements (only those) within a few hours as they were off a bit (~9 hPa higher). I then calibrated the sensor and made a quick check, then I unblocked them on my stations control panel. I've seen they are still a bit high and low sometimes, but now I know I should keep an eye on them for a while.

The station can be found here: https://www.awekas.at/en/instrument.php?id=32962

And if it is still online, the webstation can be found here: https://stationsweb.awekas.at/index.php?id=32962

I've included a preview here because I registered recently and they gave me one month of a free webstation (that is how they call the website that publishes the data).

CWOP/MADIS

Let's write these short words out one time:

CWOP: Citizen Weather Observer Program; https://en.wikipedia.org/w/index.php?title=CWOP
MADIS: Meteorological Assimilation Data Ingest System; https://en.wikipedia.org/w/index.php?title=MADIS

Of course I upload my data to the CWOP as my station is a registered CWOP station. CWOP sends their data to MADIS, who then rate my station in relation to my neighboring stations.

You can have a look at my station AV859 if you like -- hough, it seems the information there did not get updated yet as it still shows Netatmo as my hardware and also other people reported problems with the CWOP (and sometimes FindU) sites.

Recent packets can be seen here: http://www.wxqa.com/sss/search1.cgi?keyword=oe7drt-13

One last view at the old page

Unfortunately I only have the statistics page captured.

The sensor are not very expensive, but they are not cheap either. They use a lot of batteries (usually type AA or AAA) and they perform quite good, but all data is stored on Netatmo servers and your weather station has to use their API to download actual values. ↩︎

12 KiB Raw Blame History Unescape Escape

Installation of the gateway

Installation of WeeWX on the Raspberry Pi 4

First off, a database is needed

Some information about security

Install weewx-gw1000 driver

Install the Weather Data Center Skin

Install the weewx-xaggs extension

Install the weewx-forecast extension

WUnderground

Openweathermap

Uploading data to other weather websites/services

Ecowitt

WUnderground

AWEKAS

CWOP/MADIS

One last view at the old page

12 KiB

Raw Blame History Unescape Escape