update weewx5 blog post and publish it

content/posts/2024/66-upgrade-my-weatherstation-to-weewx-5/index.md

@@ -1,26 +1,27 @@
 ---
 title: Upgrade my weatherstation to WeeWX 5
 summary: >
-# date: 2024-05-11T23:53:55+02:00
+  Another big move for the weatherstation. The station also moved off the Raspberry Pi 4
-date: 2024-06-09T08:54:06+0200
+  and I'm using the SQLite database again (instead of a local or remote MySQL server).
+  The new environment is a virtual machine running on my homeserver.
+date: 2024-06-30T21:48:50+0200
 # lastmod: 
 coverCaption: Ecowitt WS69
 categories:
 - amateur-radio
+- computerstuff
 tags:
   - Archlinux
   - WeeWX
   - WX
-  - draft_post
-
-draft: true
 
 ---
 
-I will move the weatherstation software again to another computer, this time
+I moved the weatherstation software again to another computer, this time
 a virtual one -- that means one Raspberry Pi less on the windowsill.
 
-The installation process is also [covered in the 5.0 docs](https://weewx.com/docs/5.0/quickstarts/pip/).
+The installation process is also
+[covered in the 5.0 docs](https://weewx.com/docs/5.0/quickstarts/pip/).
 
 ## Creating the virtual environment
 
@@ -55,6 +56,8 @@ soon install.
 
 ## Installing the extensions
 
+Do this **within the virtual environment**!
+
 Install the GW1000 driver:
 
 ~~~console
@@ -83,12 +86,35 @@ $ wget https://github.com/chaunceygardiner/weewx-forecast/releases/download/v3.4
 $ weectl extension install weewx-forecast-3.4.0b12.zip
 ~~~
 
+Install the OpenWeatherMap extension:
+
+~~~console
+$ wget -O weewx-owm.zip https://github.com/matthewwall/weewx-owm/archive/master.zip
+$ weectl extension install weewx-owm.zip
+~~~
+
 ## Install Systemd and udev files
 
 ~~~console
 $ sudo sh ~/weewx-data/scripts/setup-daemon.sh
 ~~~
 
+My installation died everyday at 5 AM and so I modified the systemd files
+at the `[Service]` section:
+
+~~~patch
+--- weewx.service	2024-06-13 21:13:50.115021718 +0200
++++ /etc/systemd/system/weewx.service	2024-06-11 05:22:43.224222604 +0200
+@@ -12,6 +12,8 @@
+ ExecStart=/home/dominic/weewx-venv/bin/python /home/dominic/weewx-venv/lib/python3.12/site-packages/weewxd.py /home/dominic/weewx-data/weewx.conf
+ StandardOutput=null
+ StandardError=journal+console
++RestartSec=60
++Restart=on-failure
+ User=dominic
+ Group=dominic
+~~~
+
 ## Adopt the configuration files
 
 Again, to include the latest changes and themes.
@@ -115,4 +141,108 @@ I like to test it with a full reboot, if you just want to start the
 daemon right away you can also run `sudo systemctl enable --now weewx.service`
 instead.
 
+## Register the station on OpenWeatherMap
+
+After creating an API key (which I already have because of the
+forecast plugin that I use already) we can register our new
+station on the command line with `curl`.
+
+~~~console
+$ curl --header "Content-Type: application/json" --request POST \
+  --data '{"external_id": "LGFD_OE7DRT","name": "OE7DRT-13, Laengenfeld, Tirol, Austria","latitude": 47.07321210625363, "longitude": 10.974540559888204, "altitude": 1202}' \
+  "http://api.openweathermap.org/data/3.0/stations?appid={APIKEY}"
+~~~
+
+That should give you something like this (probably without linebreaks!):
+
+~~~json
+{
+  "ID": "${STATION_ID}",
+  "updated_at": "2024-06-23T07:40:47.276754274Z",
+  "created_at": "2024-06-23T07:40:47.276754093Z",
+  "user_id": "${USERID}",
+  "external_id": "LGFD_OE7DRT",
+  "name": "OE7DRT-13, Laengenfeld, Tirol, Austria",
+  "latitude": 47.07321210625363,
+  "longitude": 10.974540559888204,
+  "altitude": 1202,
+  "rank": 10,
+  "source_type": 5
+}
+~~~
+
+I haven't found any information about the format of `altitude` so I currently
+used 1202, which represents my stations height in **meters**.
+
+To change a stations information I'd then send another request like:
+
+~~~console
+$ curl --header "Content-Type: application/json" --request PUT \
+  --data '{"external_id": LGFD_OE7DRT, "name": "OE7DRT-13, Längenfeld, Tirol, Austria"}' \
+  "http://api.openweathermap.org/data/3.0/stations/${STATION_ID}?appid=${APIKEY}"
+~~~
+
+## Send the URL as the stations status text
+
+Create another virtual environment:
+
+~~~console
+$ python -m venv ~/aprs-venv
+$ python -m pip install aprslib
+~~~
+
+Create systemd files for the user:
+
+~~~console
+$ mkdir -p .config/systemd/user
+~~~
+
+Create these two files in the directory above:
+
+`aprs-sendstatus.timer`:
+
+~~~systemd
+[Unit]
+Description="Send APRS status package to APRS-IS for the Weatherstation"
+
+[Timer]
+OnBootSec=2min
+OnUnitInactiveSec=30min
+Unit=aprs-sendstatus.service
+
+[Install]
+WantedBy=default.target
+~~~
+
+`aprs-sendstatus.service`:
+~~~systemd
+[Unit]
+Description="Send APRS status package to APRS-IS for the Weatherstation"
+After=network.target
+
+[Service]
+Type=oneshot
+ExecStart=/home/dominic/aprs-venv/bin/python /home/dominic/bin/aprs_sendstatus.py
+
+[Install]
+WantedBy=default.target
+~~~
+
+Enable the timer:
+
+~~~console
+$ systemctl --user daemon-reload
+$ systemctl --user enable --now aprs-sendstatus.timer
+~~~
+
+Check if the timer is listed:
+
+~~~console
+$ systemctl --user list-timers
+NEXT                          LEFT LAST                               PASSED UNIT                  ACTIVATES
+Sun 2024-06-30 21:54:20 CEST 25min Sun 2024-06-30 21:24:19 CEST 4min 18s ago aprs-sendstatus.timer aprs-sendstatus.service
+
+1 timers listed.
+Pass --all to see loaded but inactive timers, too.
+~~~