blog/archive/2022/03/03.rss

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   4                 <title>Petter Reinholdtsen - Entries from March 2022</title>
   5                 <description>Entries from March 2022</description>
   6                 <link>https://people.skolelinux.org/pere/blog/</link>
   7
   8
   9         <item>
  10                 <title>Få en slutt på Digitale utslipp</title>
  11                 <link>https://people.skolelinux.org/pere/blog/F__en_slutt_p__Digitale_utslipp.html</link>
  12                 <guid isPermaLink="true">https://people.skolelinux.org/pere/blog/F__en_slutt_p__Digitale_utslipp.html</guid>
  13                 <pubDate>Mon, 14 Mar 2022 22:00:00 +0100</pubDate>
  14                 <description>&lt;p&gt;På onsdag sendte jeg følgende epost til Utdanningsetaten i Oslo
  15 kommune (UDE).  Fikk beskjed om at min henvendelse har saksnummer
  16 22/7559-1 i den
  17 &lt;a href=&quot;https://www.oslo.kommune.no/etater-foretak-og-ombud/utdanningsetaten/postjournal-utdanningsetaten/&quot;&gt;offentlige
  18 postjournalen til UDE&lt;/a&gt;.  Jeg er spent på hva slags respons jeg får.
  19 Mistenker jo de fleste som sprer sine nettsideleseres
  20 personopplysninger til utlandet ikke har tenkt så nøye igjennom hva de
  21 gjør, og at det er håp om at de tenker seg litt nøyere om hvis de blir
  22 klar over problemstillingen.  Vet du noen som burde få tilsvarede
  23 beskjed og spørsmål?  Kanskje du kan sende dem en epost.  Hvis alle
  24 bidrar blir det kanskje litt bedre.&lt;/p&gt;
  25
  26 &lt;blockquote&gt;
  27 &lt;p&gt;To: postmottak (at) osloskolen.no
  28 &lt;br&gt;Subject: Digitale utslipp fra osloskolens nettsider&lt;/p&gt;
  29
  30 &lt;p&gt;Hei.&lt;/p&gt;
  31
  32 &lt;p&gt;Jeg ser at osloskolens nettsider har digitale utslipp av
  33 personopplysninger til Google, Facebook og andre, blant annet omtalt
  34 på &amp;lt;URL: &lt;a href=&quot;https://aktuelt.osloskolen.no/personvernerklaring-for-osloskolen/informasjonskapsler/&quot;&gt;https://aktuelt.osloskolen.no/personvernerklaring-for-osloskolen/informasjonskapsler/&lt;/a&gt;
  35 &gt;.&lt;/p&gt;
  36
  37 &lt;p&gt;&amp;lt;URL: &lt;a href=&quot;https://webbkoll.dataskydd.net/&quot;&gt;https://webbkoll.dataskydd.net/&lt;/a&gt; &gt; kan være et nyttig verktøy for å holde øye med utslippsomfanget på ulike sider.&lt;/p&gt;
  38
  39 &lt;p&gt;Kanskje det er en ide å gjøre noe med det, jamfør &amp;lt;URL: &lt;a href=&quot;https://www.digi.no/artikler/debatt-det-enkleste-tiltaket-er-a-skru-av-google-analytics/517378&quot;&gt;https://www.digi.no/artikler/debatt-det-enkleste-tiltaket-er-a-skru-av-google-analytics/517378&lt;/a&gt; &gt;?&lt;/p&gt;
  40
  41 &lt;p&gt;Et alternativ til Google Analytics kan være en lokalt installert
  42 utgave av &amp;lt;URL:
  43 &lt;a href=&quot;https://matomo.org/&quot;&gt;https://matomo.org/&lt;/a&gt; &gt;.  Den og flere
  44 andre alternativer kan finnes via
  45 &amp;lt;URL: &lt;a href=&quot;https://www.digi.no/artikler/sverige-vil-skrote-amerikansk-skytjeneste-her-er-alternativene/516223?key=5QsV0wRG&quot;&gt;https://www.digi.no/artikler/sverige-vil-skrote-amerikansk-skytjeneste-her-er-alternativene/516223?key=5QsV0wRG&lt;/a&gt; &gt;
  46 på bakgrunn av at svenske myndigheter har innsett at dagens praksis
  47 nok er både lite lur og ulovlig.  Der henger Norge litt etter, men
  48 osloskolen har her mulighet til å være litt i forkant. :)&lt;/p&gt;
  49
  50 &lt;p&gt;Fint om dere kan gi beskjed hvilket saksnummer denne henvendelsen får i
  51 offentlig postjournal når den er mottatt.&lt;/p&gt;
  52
  53 &lt;/blockquote&gt;
  54
  55 &lt;/p&gt;Flere og flere innser at slik spredning av personopplysninger er
  56 ugreit.  Det har pågått i mange år.  Ser jeg blogget
  57 &lt;a href=&quot;https://people.skolelinux.org/pere/blog/Det_er_jo_makta_som_er_mest_s_rbar_ved_massiv_overv_kning_av_Internett.html&quot;&gt;første
  58 gang om Google Analytics i 2013&lt;/a&gt; og
  59 &lt;a href=&quot;https://people.skolelinux.org/pere/blog/Snurpenot_overv_kning_av_sensitiv_personinformasjon.html&quot;&gt;analyserte
  60 omfanget i 2015&lt;/a&gt;, men det er et langt lerret å bleke.&lt;/p&gt;
  61
  62 &lt;p&gt;Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til
  63 det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner
  64 til min adresse
  65 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.
  66 Merk, betaling med bitcoin er ikke anonymt. :)&lt;/p&gt;
  67 </description>
  68         </item>
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  70         <item>
  71                 <title>Publish Hargassner wood chip boiler state to MQTT</title>
  72                 <link>https://people.skolelinux.org/pere/blog/Publish_Hargassner_wood_chip_boiler_state_to_MQTT.html</link>
  73                 <guid isPermaLink="true">https://people.skolelinux.org/pere/blog/Publish_Hargassner_wood_chip_boiler_state_to_MQTT.html</guid>
  74                 <pubDate>Sat, 12 Mar 2022 06:30:00 +0100</pubDate>
  75                 <description>&lt;p&gt;Recently I had a look at a
  76 &lt;a href=&quot;https://www.hargassner.at/&quot;&gt;Hargassner&lt;/a&gt;
  77 &lt;a href=&quot;https://www.hargassner.at/en/products/wood-chip-boiler.html&quot;&gt;wood
  78 chip boiler&lt;/a&gt;, and what kind of free software can be used to monitor
  79 and control it.  The boiler can be connected to some cloud service via
  80 what the producer call an Internet Gateway, which seem to be a
  81 computer connecting to the boiler and passing the information gathered
  82 to the cloud.  I discovered the boiler controller got an IP address on
  83 the local network and listen on TCP port 23 to provide status
  84 information as a text line of numbers.  It also provide a HTTP server
  85 listening on port 80, but I have not yet figured out what it can do
  86 beside return an error code.&lt;/p&gt;
  87
  88 &lt;p&gt;If I am to believe various free software implementations talking to
  89 such boiler, the interpretation of the line of numbers differ between
  90 type of boiler and software version on the boiler.  By comparing the
  91 list of numbers on the front panel of the boiler with the numbers
  92 returned via TCP, I have been able to figure out several of the
  93 numbers, but there are a lot left to understand.  I&#39;ve located several
  94 temperature measurements and hours running values, as well as oxygen
  95 measurements and counters.&lt;/p&gt;
  96
  97 I decided to write a simple parser in Python for the values I figured
  98 out so far, and a simple MQTT injector publishing both the interpreted
  99 and the unknown values on a MQTT bus to make collecting and graphing
 100 simpler.  The end result is available from the
 101 &lt;a href=&quot;https://gitlab.com/petterreinholdtsen/hargassner2mqtt&quot;&gt;hargassner2mqtt
 102 project page&lt;/a&gt; on gitlab.  I very much welcome patches extending the
 103 parser to understand more values, boiler types and software versions.
 104 I do not really expect very few free software developers got their
 105 hands on such unit to experiment, but it would be fun if others too find
 106 this project useful.&lt;/p&gt;
 107
 108 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 109 activities, please send Bitcoin donations to my address
 110 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
 111 </description>
 112         </item>
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 114         <item>
 115                 <title>Run your industrial metal working machine using Debian?</title>
 116                 <link>https://people.skolelinux.org/pere/blog/Run_your_industrial_metal_working_machine_using_Debian_.html</link>
 117                 <guid isPermaLink="true">https://people.skolelinux.org/pere/blog/Run_your_industrial_metal_working_machine_using_Debian_.html</guid>
 118                 <pubDate>Wed, 2 Mar 2022 18:40:00 +0100</pubDate>
 119                 <description>&lt;p&gt;After many months of hard work by the good people involved in
 120 &lt;a href=&quot;https://en.wikipedia.org/wiki/LinuxCNC&quot;&gt;LinuxCNC&lt;/a&gt;, the
 121 system was accepted Sunday
 122 &lt;a href=&quot;https://tracker.debian.org/pkg/linuxcnc&quot;&gt;into Debian&lt;/a&gt;.
 123 Once it was available from Debian, I was surprised to discover from
 124 &lt;a href=&quot;https://qa.debian.org/popcon.php?package=linuxcnc&quot;&gt;its
 125 popularity-contest numbers&lt;/a&gt; that people have been reporting its use
 126 since 2012.  &lt;a href=&quot;http://linuxcnc.org/&quot;&gt;Its project site&lt;/a&gt; might
 127 be a good place to check out, but sadly is not working when visiting
 128 via Tor.&lt;/p&gt;
 129
 130 &lt;p&gt;But what is LinuxCNC, you are probably wondering?  Perhaps a
 131 Wikipedia quote is in place?&lt;/p&gt;
 132
 133 &lt;blockquote&gt;
 134 &quot;LinuxCNC is a software system for numerical control of
 135 machines such as milling machines, lathes, plasma cutters, routers,
 136 cutting machines, robots and hexapods. It can control up to 9 axes or
 137 joints of a CNC machine using G-code (RS-274NGC) as input. It has
 138 several GUIs suited to specific kinds of usage (touch screen,
 139 interactive development).&quot;
 140 &lt;/blockquote&gt;
 141
 142 &lt;p&gt;It can even control 3D printers.  And even though the Wikipedia
 143 page indicate that it can only work with hard real time kernel
 144 features, it can also work with the user space soft real time features
 145 provided by the Debian kernel.
 146 &lt;a href=&quot;https://github.com/linuxcnc/linuxcnc&quot;&gt;The source code&lt;/a&gt; is
 147 available from Github.  The last few months I&#39;ve been involved in the
 148 translation setup for the program and documentation.  Translators are
 149 most welcome to
 150 &lt;a href=&quot;https://hosted.weblate.org/engage/linuxcnc/&quot;&gt;join the
 151 effort&lt;/a&gt; using Weblate.&lt;/p&gt;
 152
 153 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 154 activities, please send Bitcoin donations to my address
 155 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
 156 </description>
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