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[homepage.git] / blog / archive / 2023 / 05 / index.html

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@@ -21,6 +21,61 @@
 
     <h3>Entries from May 2023.</h3>
     
+    <div class="entry">
+      <div class="title">
+        <a href="https://people.skolelinux.org/pere/blog/wmbusmeters__parse_data_from_your_utility_meter___nice_free_software.html">wmbusmeters, parse data from your utility meter - nice free software</a>
+      </div>
+      <div class="date">
+        19th May 2023
+      </div>
+      <div class="body">
+        <p>There is a European standard for reading utility meters like water,
+gas, electricity or heat distribution meters.  The
+<a href="https://en.wikipedia.org/wiki/Meter-Bus">Meter-Bus standard
+(EN 13757-2, EN 13757-3 and EN 13757–4)</a> 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.</p>
+
+<p>The free software systems in question,
+<a href="https://tracker.debian.org/pkg/rtl-wmbus">rtl-wmbus</a> to
+read the messages from a software defined radio, and
+<a href="https://tracker.debian.org/pkg/wmbusmeters">wmbusmeters</a> 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.</p>
+
+<p>If you got a infrastructure meter supporting the Meter Bus
+standard, I strongly recommend having a look at these nice
+packages.</p>
+
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
+
+      </div>
+      <div class="tags">
+        
+        
+        Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software</a>.
+        
+        
+      </div>
+    </div>
+    <div class="padding"></div>
+    
     <div class="entry">
       <div class="title">
         <a href="https://people.skolelinux.org/pere/blog/The_2023_LinuxCNC_Norwegian_developer_gathering.html">The 2023 LinuxCNC Norwegian developer gathering</a>
@@ -139,7 +194,7 @@ activities, please send Bitcoin donations to my address
 
 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/04/">April (2)</a></li>
 
-<li><a href="https://people.skolelinux.org/pere/blog/archive/2023/05/">May (2)</a></li>
+<li><a href="https://people.skolelinux.org/pere/blog/archive/2023/05/">May (3)</a></li>
 
 </ul></li>
 
@@ -555,7 +610,7 @@ activities, please send Bitcoin donations to my address
 
  <li><a href="https://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 
- <li><a href="https://people.skolelinux.org/pere/blog/tags/debian">debian (192)</a></li>
+ <li><a href="https://people.skolelinux.org/pere/blog/tags/debian">debian (193)</a></li>
 
  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (159)</a></li>
 
@@ -569,7 +624,7 @@ activities, please send Bitcoin donations to my address
 
  <li><a href="https://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 
- <li><a href="https://people.skolelinux.org/pere/blog/tags/english">english (448)</a></li>
+ <li><a href="https://people.skolelinux.org/pere/blog/tags/english">english (449)</a></li>
 
  <li><a href="https://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 
@@ -609,7 +664,7 @@ activities, please send Bitcoin donations to my address
 
  <li><a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (45)</a></li>
 
- <li><a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (14)</a></li>
+ <li><a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (15)</a></li>
 
  <li><a href="https://people.skolelinux.org/pere/blog/tags/noark5">noark5 (23)</a></li>