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[homepage.git] / blog / archive / 2023 / 05 / 05.rss

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                 <link>https://people.skolelinux.org/pere/blog/</link>
 
        
+       <item>
+               <title>wmbusmeters, parse data from your utility meter - nice free software</title>
+               <link>https://people.skolelinux.org/pere/blog/wmbusmeters__parse_data_from_your_utility_meter___nice_free_software.html</link>        
+               <guid isPermaLink="true">https://people.skolelinux.org/pere/blog/wmbusmeters__parse_data_from_your_utility_meter___nice_free_software.html</guid>
+                <pubDate>Fri, 19 May 2023 21:50:00 +0200</pubDate>
+               <description>&lt;p&gt;There is a European standard for reading utility meters like water,
+gas, electricity or heat distribution meters.  The
+&lt;a href=&quot;https://en.wikipedia.org/wiki/Meter-Bus&quot;&gt;Meter-Bus standard
+(EN 13757-2, EN 13757-3 and EN 13757–4)&lt;/a&gt; provide a cross vendor way
+to talk to and collect meter data.  I ran into this standard when I
+wanted to monitor some heat distribution meters, and managed to find
+free software that could do the job.  The meters in question broadcast
+encrypted messages with meter information via radio, and the hardest
+part was to track down the encryption keys from the vendor.  With this
+in place I could set up a MQTT gateway to submit the meter data for
+graphing.&lt;/p&gt;
+
+&lt;p&gt;The free software systems in question,
+&lt;a href=&quot;https://tracker.debian.org/pkg/rtl-wmbus&quot;&gt;rtl-wmbus&lt;/a&gt; to
+read the messages from a software defined radio, and
+&lt;a href=&quot;https://tracker.debian.org/pkg/wmbusmeters&quot;&gt;wmbusmeters&lt;/a&gt; to
+decrypt and decode the content of the messages, is working very well
+and allowe me to get frequent updates from my meters.  I got in touch
+with upstream last year to see if there was any interest in publishing
+the packages via Debian.  I was very happy to learn that Fredrik
+Öhrström volunteered to maintain the packages, and I have since
+assisted him in getting Debian package build rules in place as well as
+sponsoring the packages into the Debian archive.  Sadly we completed
+it too late for them to become part of the next stable Debian release
+(Bookworm).  The wmbusmeters package just cleared the NEW queue.  It
+will need some work to fix a built problem, but I expect Fredrik will
+find a solution soon.&lt;/p&gt;
+
+&lt;p&gt;If you got a infrastructure meter supporting the Meter Bus
+standard, I strongly recommend having a look at these nice
+packages.&lt;/p&gt;
+
+&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
+</description>
+       </item>
+       
        <item>
                <title>The 2023 LinuxCNC Norwegian developer gathering</title>
                <link>https://people.skolelinux.org/pere/blog/The_2023_LinuxCNC_Norwegian_developer_gathering.html</link>