blog/archive/2019/06/06.rss

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   4                 <title>Petter Reinholdtsen - Entries from June 2019</title>
   5                 <description>Entries from June 2019</description>
   6                 <link>http://people.skolelinux.org/pere/blog/</link>
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   9         <item>
  10                 <title>Official MIME type &quot;text/vnd.sosi&quot; for SOSI map data</title>
  11                 <link>http://people.skolelinux.org/pere/blog/Official_MIME_type__text_vnd_sosi__for_SOSI_map_data.html</link>
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  13                 <pubDate>Tue, 4 Jun 2019 09:20:00 +0200</pubDate>
  14                 <description>&lt;p&gt;Just 15 days ago,
  15 &lt;ahref=&quot;http://people.skolelinux.org/pere/blog/MIME_type__text_vnd_sosi__for_SOSI_map_data.html&quot;&gt;I
  16 mentioned&lt;/a&gt; my submission to IANA to register an official MIME type
  17 for the SOSI vector map format.  This morning, just an hour ago, I was
  18 notified that
  19 &lt;a href=&quot;https://www.iana.org/assignments/media-types/text/vnd.sosi&quot;&gt;the
  20 MIME type &quot;text/vnd.sosi&quot;&lt;/a&gt; is registered for this format.  In
  21 addition to this registration, my
  22 &lt;a href=&quot;https://github.com/file/file/blob/master/magic/Magdir/sosi&quot;&gt;file(1)
  23 patch for a pattern matching rule for SOSI files&lt;/a&gt; has been accepted
  24 into the official source of that program (pending a new release), and
  25 I&#39;ve been told by the team behind
  26 &lt;a href=&quot;https://www.nationalarchives.gov.uk/PRONOM/&quot;&gt;PRONOM&lt;/a&gt; that
  27 the SOSI format will be included in the next release of PRONOM, which
  28 they plan to release this summer around July.&lt;/p&gt;
  29
  30 &lt;p&gt;I am very happy to see all of this fall into place, for use by
  31 &lt;a href=&quot;https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/&quot;&gt;the
  32 Noark 5 Tjenestegrensesnitt&lt;/a&gt; implementations.&lt;/p&gt;
  33
  34 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
  35 activities, please send Bitcoin donations to my address
  36 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
  37 </description>
  38         </item>
  39
  40         <item>
  41                 <title>The space rover coquine, or how I ended up on the dark side of the moon</title>
  42                 <link>http://people.skolelinux.org/pere/blog/The_space_rover_coquine__or_how_I_ended_up_on_the_dark_side_of_the_moon.html</link>
  43                 <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_space_rover_coquine__or_how_I_ended_up_on_the_dark_side_of_the_moon.html</guid>
  44                 <pubDate>Sun, 2 Jun 2019 23:55:00 +0200</pubDate>
  45                 <description>&lt;p&gt;A while back a college and friend from Debian and the Skolelinux /
  46 Debian Edu project approached me, asking if I knew someone that might
  47 be interested in helping out with a technology project he was running
  48 as a teacher at &lt;a href=&quot;https://www.ecolefrancodanoise.dk/&quot;&gt;L&#39;école
  49 franco-danoise&lt;/a&gt; - the Danish-French school and kindergarden.  The
  50 kids were building robots, rovers.  The story behind it is to build a
  51 rover for use
  52 &lt;a href=&quot;http://blog.ecolefrancodanoise.dk/first-week-on-the-dark-side&quot;&gt;on
  53 the dark side of the moon&lt;/a&gt;, and remote control it.  As travel cost
  54 was a bit high for the final destination, and they wanted to test the
  55 concept first, he was looking for volunteers to host a rover for the
  56 kids to control in a foreign country.  I ended up volunteering as a
  57 host, and last week the rover arrived.  It took a while to arrive
  58 after &lt;a href=&quot;http://blog.ecolefrancodanoise.dk/model-moms&quot;&gt;it was
  59 built and shipped&lt;/a&gt;, because of customs confusion.  Luckily we were
  60 able fix it quickly with help from my colleges at work.&lt;/p&gt;
  61
  62 &lt;p&gt;This is what it looked like when the rover arrived.  Note the cute
  63 eyes looking up on me from the wrapping&lt;/p&gt;
  64
  65 &lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2019-06-02-robot-dark-side-of-moon-esken-med-det-rare-i.jpeg&quot; width=&quot;32%&quot; style=&quot;clear:left&quot;/&gt;
  66 &lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2019-06-02-robot-dark-side-of-moon-den-ser-meg.jpeg&quot; width=&quot;32%&quot; style=&quot;clear:left&quot;/&gt;
  67 &lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2019-06-02-robot-dark-side-of-moon-en-skrue-loes.jpeg&quot; width=&quot;32%&quot; style=&quot;clear:left&quot;/&gt;
  68
  69 &lt;p style=&quot;text-align:left&quot;&gt;Once the robot arrived, we needed to track
  70 down batteries and figure out how to build custom firmware for it with
  71 the appropriate wifi settings.  I asked a friend if I could get two
  72 18650 batteries from his pile of Tesla batteries (he had them from the
  73 wrack of a crashed Tesla), so now the rover is running on Tesla
  74 batteries.&lt;/p&gt;
  75
  76 &lt;p&gt;Building
  77 &lt;a href=&quot;https://gitlab.com/ecolefrancodanoise/arduino-efd/&quot;&gt;the rover
  78 firmware&lt;/a&gt; proved a bit harder, as the code did not work out of the
  79 box with the Arduino IDE package in Debian Buster.  I suspect this is
  80 due to a unsolved
  81 &lt;a href=&quot;https://github.com/arduino/Arduino/pull/2703&quot;&gt; license problem
  82 with arduino&lt;/a&gt; blocking Debian from upgrading to the latest version.
  83 In the end we gave up debugging why the IDE failed to find the
  84 required libraries, and ended up using the Arduino Makefile from the
  85 &lt;a href=&quot;https://tracker.debian.org/pkg/arduino-mk&quot;&gt;arduino-mk Debian
  86 package&lt;/a&gt; instead.  Unfortunately the camera library is missing from
  87 the Arduino environment in Debian, so we disabled the camera support
  88 for the first firmware build, to get something up and running.  With
  89 this reduced firmware, the robot could be controlled via the
  90 controller server, driving around and measuring distance using its
  91 internal acoustic sensor.&lt;/p&gt;
  92
  93 &lt;p&gt;Next, With some help from my friend in Denmark, which checked in the
  94 camera library into the gitlab repository for me to use, we were able
  95 to build a new and more complete version of the firmware, and the
  96 robot is now up and running.  This is what the &quot;commander&quot; web page
  97 look like after taking a measurement and a snapshot:&lt;/p&gt;
  98
  99 &lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2019-06-02-robot-dark-side-of-moon-commander.png&quot; width=&quot;40%&quot; border=&quot;1&quot; align=&quot;center&quot;/&gt;
 100
 101 &lt;p&gt;If you want to learn more about this project, you can check out the
 102 &lt;a href=&quot;https://hackaday.io/project/164082-the-dark-side-challenge&quot;&gt;The
 103 Dark Side Challenge&lt;/a&gt; Hackaday web pages.&lt;/p&gt;
 104
 105 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 106 activities, please send Bitcoin donations to my address
 107 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
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