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  13  <h1>
  14      <a href="https://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16  </h1>
  17
  18 </div>
  19
  20
  21     <h3>Entries tagged "lego".</h3>
  22
  23     <div class="entry">
  24       <div class="title">
  25         <a href="https://people.skolelinux.org/pere/blog/Debian_still_an_excellent_choice_for_Lego_builders.html">Debian still an excellent choice for Lego builders</a>
  26       </div>
  27       <div class="date">
  28         24th October 2021
  29       </div>
  30       <div class="body">
  31         <p>The Debian Lego team saw a lot of activity the last few weeks.  All
  32 the packages under the team umbrella has been updated to fix
  33 packaging, lintian issues and BTS reports.  In addition, a new and
  34 inspiring team member appeared on both the
  35 <a href="https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/debian-lego-team">debian-lego-team
  36 Team mailing list</a> and
  37 <a href="irc://irc.debian.org/%23debian-lego">IRC channel
  38 #debian-lego</a>.  If you are interested in Lego CAD design and LEGO
  39 Mindstorms programming, check out the
  40 <a href="http://wiki.debian.org/LegoDesigners">team wiki page</a> to
  41 see what Debian can offer the Lego enthusiast.</p>
  42
  43 <p>Patches has been sent upstream, causing new upstream releases, one
  44 even the first one in more than ten years, and old upstreams was
  45 released with new ones.  There are still a lot of work left, and the
  46 team welcome more members to help us make sure Debian is the Linux
  47 distribution of choice for Lego builders.  If you want to contribute,
  48 join us in the IRC channel and become part of
  49 <a href="https://salsa.debian.org/debian-lego-team/">the team on
  50 Salsa</a>.</p>
  51
  52 <p>As usual, if you use Bitcoin and want to show your support of my
  53 activities, please send Bitcoin donations to my address
  54 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  55
  56       </div>
  57       <div class="tags">
  58
  59
  60         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/lego">lego</a>, <a href="https://people.skolelinux.org/pere/blog/tags/robot">robot</a>.
  61
  62
  63       </div>
  64     </div>
  65     <div class="padding"></div>
  66
  67     <div class="entry">
  68       <div class="title">
  69         <a href="https://people.skolelinux.org/pere/blog/My_own_self_balancing_Lego_Segway.html">My own self balancing Lego Segway</a>
  70       </div>
  71       <div class="date">
  72          4th November 2016
  73       </div>
  74       <div class="body">
  75         <p>A while back I received a Gyro sensor for the NXT
  76 <a href="mindstorms.lego.com">Mindstorms</a> controller as a birthday
  77 present.  It had been on my wishlist for a while, because I wanted to
  78 build a Segway like balancing lego robot.  I had already built
  79 <a href="http://www.nxtprograms.com/NXT2/segway/">a simple balancing
  80 robot</a> with the kids, using the light/color sensor included in the
  81 NXT kit as the balance sensor, but it was not working very well.  It
  82 could balance for a while, but was very sensitive to the light
  83 condition in the room and the reflective properties of the surface and
  84 would fall over after a short while.  I wanted something more robust,
  85 and had
  86 <a href="https://www.hitechnic.com/cgi-bin/commerce.cgi?preadd=action&key=NGY1044">the
  87 gyro sensor from HiTechnic</a> I believed would solve it on my
  88 wishlist for some years before it suddenly showed up as a gift from my
  89 loved ones. :)</p>
  90
  91 <p>Unfortunately I have not had time to sit down and play with it
  92 since then.  But that changed some days ago, when I was searching for
  93 lego segway information and came across a recipe from HiTechnic for
  94 building
  95 <a href="http://www.hitechnic.com/blog/gyro-sensor/htway/">the
  96 HTWay</a>, a segway like balancing robot.  Build instructions and
  97 <a href="https://www.hitechnic.com/upload/786-HTWayC.nxc">source
  98 code</a> was included, so it was just a question of putting it all
  99 together.  And thanks to the great work of many Debian developers, the
 100 compiler needed to build the source for the NXT is already included in
 101 Debian, so I was read to go in less than an hour.  The resulting robot
 102 do not look very impressive in its simplicity:</p>
 103
 104 <p align="center"><img width="70%" src="http://people.skolelinux.org/pere/blog/images/2016-11-04-lego-htway-robot.jpeg"></p>
 105
 106 <p>Because I lack the infrared sensor used to control the robot in the
 107 design from HiTechnic, I had to comment out the last task
 108 (taskControl).  I simply placed /* and */ around it get the program
 109 working without that sensor present.  Now it balances just fine until
 110 the battery status run low:</p>
 111
 112 <p align="center"><video width="70%" controls="true">
 113    <source src="http://people.skolelinux.org/pere/blog/images/2016-11-04-lego-htway-balancing.ogv" type="video/ogg">
 114 </video></p>
 115
 116 <p>Now we would like to teach it how to follow a line and take remote
 117 control instructions using the included Bluetooth receiver in the NXT.</p>
 118
 119 <p>If you, like me, love LEGO and want to make sure we find the tools
 120 they need to work with LEGO in Debian and all our derivative
 121 distributions like Ubuntu, check out
 122 <a href="http://wiki.debian.org/LegoDesigners">the LEGO designers
 123 project page</a> and join the Debian LEGO team.  Personally I own a
 124 RCX and NXT controller (no EV3), and would like to make sure the
 125 Debian tools needed to program the systems I own work as they
 126 should.</p>
 127
 128       </div>
 129       <div class="tags">
 130
 131
 132         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/lego">lego</a>, <a href="https://people.skolelinux.org/pere/blog/tags/robot">robot</a>.
 133
 134
 135       </div>
 136     </div>
 137     <div class="padding"></div>
 138
 139     <div class="entry">
 140       <div class="title">
 141         <a href="https://people.skolelinux.org/pere/blog/Isenkram__Appstream_and_udev_make_life_as_a_LEGO_builder_easier.html">Isenkram, Appstream and udev make life as a LEGO builder easier</a>
 142       </div>
 143       <div class="date">
 144          7th October 2016
 145       </div>
 146       <div class="body">
 147         <p><a href="http://packages.qa.debian.org/isenkram">The Isenkram
 148 system</a> provide a practical and easy way to figure out which
 149 packages support the hardware in a given machine.  The command line
 150 tool <tt>isenkram-lookup</tt> and the tasksel options provide a
 151 convenient way to list and install packages relevant for the current
 152 hardware during system installation, both user space packages and
 153 firmware packages. The GUI background daemon on the other hand provide
 154 a pop-up proposing to install packages when a new dongle is inserted
 155 while using the computer.  For example, if you plug in a smart card
 156 reader, the system will ask if you want to install <tt>pcscd</tt> if
 157 that package isn't already installed, and if you plug in a USB video
 158 camera the system will ask if you want to install <tt>cheese</tt> if
 159 cheese is currently missing.  This already work just fine.</p>
 160
 161 <p>But Isenkram depend on a database mapping from hardware IDs to
 162 package names.  When I started no such database existed in Debian, so
 163 I made my own data set and included it with the isenkram package and
 164 made isenkram fetch the latest version of this database from git using
 165 http.  This way the isenkram users would get updated package proposals
 166 as soon as I learned more about hardware related packages.</p>
 167
 168 <p>The hardware is identified using modalias strings.  The modalias
 169 design is from the Linux kernel where most hardware descriptors are
 170 made available as a strings that can be matched using filename style
 171 globbing.  It handle USB, PCI, DMI and a lot of other hardware related
 172 identifiers.</p>
 173
 174 <p>The downside to the Isenkram specific database is that there is no
 175 information about relevant distribution / Debian version, making
 176 isenkram propose obsolete packages too.  But along came AppStream, a
 177 cross distribution mechanism to store and collect metadata about
 178 software packages.  When I heard about the proposal, I contacted the
 179 people involved and suggested to add a hardware matching rule using
 180 modalias strings in the specification, to be able to use AppStream for
 181 mapping hardware to packages.  This idea was accepted and AppStream is
 182 now a great way for a package to announce the hardware it support in a
 183 distribution neutral way.  I wrote
 184 <a href="http://people.skolelinux.org/pere/blog/Using_appstream_with_isenkram_to_install_hardware_related_packages_in_Debian.html">a
 185 recipe on how to add such meta-information</a> in a blog post last
 186 December.  If you have a hardware related package in Debian, please
 187 announce the relevant hardware IDs using AppStream.</p>
 188
 189 <p>In Debian, almost all packages that can talk to a LEGO Mindestorms
 190 RCX or NXT unit, announce this support using AppStream.  The effect is
 191 that when you insert such LEGO robot controller into your Debian
 192 machine, Isenkram will propose to install the packages needed to get
 193 it working.  The intention is that this should allow the local user to
 194 start programming his robot controller right away without having to
 195 guess what packages to use or which permissions to fix.</p>
 196
 197 <p>But when I sat down with my son the other day to program our NXT
 198 unit using his Debian Stretch computer, I discovered something
 199 annoying.  The local console user (ie my son) did not get access to
 200 the USB device for programming the unit.  This used to work, but no
 201 longer in Jessie and Stretch.  After some investigation and asking
 202 around on #debian-devel, I discovered that this was because udev had
 203 changed the mechanism used to grant access to local devices.  The
 204 ConsoleKit mechanism from <tt>/lib/udev/rules.d/70-udev-acl.rules</tt>
 205 no longer applied, because LDAP users no longer was added to the
 206 plugdev group during login.  Michael Biebl told me that this method
 207 was obsolete and the new method used ACLs instead.  This was good
 208 news, as the plugdev mechanism is a mess when using a remote user
 209 directory like LDAP.  Using ACLs would make sure a user lost device
 210 access when she logged out, even if the user left behind a background
 211 process which would retain the plugdev membership with the ConsoleKit
 212 setup.  Armed with this knowledge I moved on to fix the access problem
 213 for the LEGO Mindstorms related packages.</p>
 214
 215 <p>The new system uses a udev tag, 'uaccess'.  It can either be
 216 applied directly for a device, or is applied in
 217 /lib/udev/rules.d/70-uaccess.rules for classes of devices.  As the
 218 LEGO Mindstorms udev rules did not have a class, I decided to add the
 219 tag directly in the udev rules files included in the packages.  Here
 220 is one example.  For the nqc C compiler for the RCX, the
 221 <tt>/lib/udev/rules.d/60-nqc.rules</tt> file now look like this:
 222
 223 <p><pre>
 224 SUBSYSTEM=="usb", ACTION=="add", ATTR{idVendor}=="0694", ATTR{idProduct}=="0001", \
 225     SYMLINK+="rcx-%k", TAG+="uaccess"
 226 </pre></p>
 227
 228 <p>The key part is the 'TAG+="uaccess"' at the end.  I suspect all
 229 packages using plugdev in their /lib/udev/rules.d/ files should be
 230 changed to use this tag (either directly or indirectly via
 231 <tt>70-uaccess.rules</tt>).  Perhaps a lintian check should be created
 232 to detect this?</p>
 233
 234 <p>I've been unable to find good documentation on the uaccess feature.
 235 It is unclear to me if the uaccess tag is an internal implementation
 236 detail like the udev-acl tag used by
 237 <tt>/lib/udev/rules.d/70-udev-acl.rules</tt>.  If it is, I guess the
 238 indirect method is the preferred way.  Michael
 239 <a href="https://github.com/systemd/systemd/issues/4288">asked for more
 240 documentation from the systemd project</a> and I hope it will make
 241 this clearer.  For now I use the generic classes when they exist and
 242 is already handled by <tt>70-uaccess.rules</tt>, and add the tag
 243 directly if no such class exist.</p>
 244
 245 <p>To learn more about the isenkram system, please check out
 246 <a href="http://people.skolelinux.org/pere/blog/tags/isenkram/">my
 247 blog posts tagged isenkram</a>.</p>
 248
 249 <p>To help out making life for LEGO constructors in Debian easier,
 250 please join us on our IRC channel
 251 <a href="irc://irc.debian.org/%23debian-lego">#debian-lego</a> and join
 252 the <a href="https://alioth.debian.org/projects/debian-lego/">Debian
 253 LEGO team</a> in the Alioth project we created yesterday.  A mailing
 254 list is not yet created, but we are working on it. :)</p>
 255
 256 <p>As usual, if you use Bitcoin and want to show your support of my
 257 activities, please send Bitcoin donations to my address
 258 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 259
 260       </div>
 261       <div class="tags">
 262
 263
 264         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/isenkram">isenkram</a>, <a href="https://people.skolelinux.org/pere/blog/tags/lego">lego</a>.
 265
 266
 267       </div>
 268     </div>
 269     <div class="padding"></div>
 270
 271     <div class="entry">
 272       <div class="title">
 273         <a href="https://people.skolelinux.org/pere/blog/Debian__the_Linux_distribution_of_choice_for_LEGO_designers_.html">Debian, the Linux distribution of choice for LEGO designers?</a>
 274       </div>
 275       <div class="date">
 276         11th May 2013
 277       </div>
 278       <div class="body">
 279         <P>In January,
 280 <a href="http://people.skolelinux.org/pere/blog/New_IRC_channel_for_LEGO_designers_using_Debian.html">I
 281 announced a</a> new <a href="irc://irc.debian.org/%23debian-lego">IRC
 282 channel #debian-lego</a>, for those of us in the Debian and Linux
 283 community interested in <a href="http://www.lego.com/">LEGO</a>, the
 284 marvellous construction system from Denmark.  We also created
 285 <a href="http://wiki.debian.org/LegoDesigners">a wiki page</a> to have
 286 a place to take notes and write down our plans and hopes.  And several
 287 people showed up to help.  I was very happy to see the effect of my
 288 call.  Since the small start, we have a debtags tag
 289 <a href="http://debtags.debian.net/search/bytag?wl=hardware::hobby:lego">hardware::hobby:lego</a>
 290 tag for LEGO related packages, and now count 10 packages related to
 291 LEGO and <a href="http://mindstorms.lego.com/">Mindstorms</a>:</p>
 292
 293 <p><table>
 294 <tr><td><a href="http://packages.qa.debian.org/brickos">brickos</a></td><td>alternative OS for LEGO Mindstorms RCX. Supports development in C/C++</td></tr>
 295 <tr><td><a href="http://packages.qa.debian.org/leocad">leocad</a></td><td>virtual brick CAD software</td></tr>
 296 <tr><td><a href="http://packages.qa.debian.org/libnxt">libnxt</a></td><td>utility library for talking to the LEGO Mindstorms NX</td></tr>
 297 <tr><td><a href="http://packages.qa.debian.org/lnpd">lnpd</a></td><td>daemon for LNP communication with BrickOS</td></tr>
 298 <tr><td><a href="http://packages.qa.debian.org/nbc">nbc</a></td><td>compiler for LEGO Mindstorms NXT bricks</td></tr>
 299 <tr><td><a href="http://packages.qa.debian.org/nqc">nqc</a></td><td>Not Quite C compiler for LEGO Mindstorms RCX</td></tr>
 300 <tr><td><a href="http://packages.qa.debian.org/python-nxt">python-nxt</a></td><td>python driver/interface/wrapper for the Lego Mindstorms NXT robot</td></tr>
 301 <tr><td><a href="http://packages.qa.debian.org/python-nxt-filer">python-nxt-filer</a></td><td>simple GUI to manage files on a LEGO Mindstorms NXT</td></tr>
 302 <tr><td><a href="http://packages.qa.debian.org/scratch">scratch</a></td><td>easy to use programming environment for ages 8 and up</td></tr>
 303 <tr><td><a href="http://packages.qa.debian.org/t2n">t2n</a></td><td>simple command-line tool for Lego NXT</td></tr>
 304 </table></p>
 305
 306 <p>Some of these are available in Wheezy, and all but one are
 307 currently available in Jessie/testing.  leocad is so far only
 308 available in experimental.</p>
 309
 310 <p>If you care about LEGO in Debian, please join us on IRC and help
 311 adding the rest of the great free software tools available on Linux
 312 for LEGO designers.</p>
 313
 314       </div>
 315       <div class="tags">
 316
 317
 318         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/lego">lego</a>, <a href="https://people.skolelinux.org/pere/blog/tags/robot">robot</a>.
 319
 320
 321       </div>
 322     </div>
 323     <div class="padding"></div>
 324
 325     <div class="entry">
 326       <div class="title">
 327         <a href="https://people.skolelinux.org/pere/blog/New_IRC_channel_for_LEGO_designers_using_Debian.html">New IRC channel for LEGO designers using Debian</a>
 328       </div>
 329       <div class="date">
 330          2nd January 2013
 331       </div>
 332       <div class="body">
 333         <p>During Christmas, I have worked a bit on the Debian support for
 334 <a href="http://mindstorms.lego.com/en-us/Default.aspx">LEGO Mindstorm
 335 NXT</a>.  My son and I have played a bit with my NXT set, and I
 336 discovered I had to build all the tools myself because none were
 337 already in Debian Squeeze.  If Debian support for LEGO is something
 338 you care about, please join me on the IRC channel
 339 <a href="irc://irc.debian.org/%23debian-lego">#debian-lego</a> (server
 340 irc.debian.org).  There is a lot that could be done to improve the
 341 Debian support for LEGO designers.  For example both CAD software
 342 and Mindstorm compilers are missing. :)</p>
 343
 344 <p>Update 2012-01-03: A
 345 <a href="http://wiki.debian.org/LegoDesigners">project page</a>
 346 including links to Lego related packages is now available.</p>
 347
 348       </div>
 349       <div class="tags">
 350
 351
 352         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/lego">lego</a>, <a href="https://people.skolelinux.org/pere/blog/tags/robot">robot</a>.
 353
 354
 355       </div>
 356     </div>
 357     <div class="padding"></div>
 358
 359     <p style="text-align: right;"><a href="lego.rss"><img src="https://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14" /></a></p>
 360     <div id="sidebar">
 361
 362
 363
 364 <h2>Archive</h2>
 365 <ul>
 366
 367 <li>2023
 368 <ul>
 369
 370 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/01/">January (3)</a></li>
 371
 372 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/02/">February (1)</a></li>
 373
 374 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/04/">April (2)</a></li>
 375
 376 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/05/">May (2)</a></li>
 377
 378 </ul></li>
 379
 380 <li>2022
 381 <ul>
 382
 383 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/02/">February (1)</a></li>
 384
 385 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/03/">March (3)</a></li>
 386
 387 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/04/">April (2)</a></li>
 388
 389 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/06/">June (2)</a></li>
 390
 391 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/07/">July (1)</a></li>
 392
 393 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/09/">September (1)</a></li>
 394
 395 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/10/">October (1)</a></li>
 396
 397 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/12/">December (1)</a></li>
 398
 399 </ul></li>
 400
 401 <li>2021
 402 <ul>
 403
 404 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/01/">January (2)</a></li>
 405
 406 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/02/">February (1)</a></li>
 407
 408 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/05/">May (1)</a></li>
 409
 410 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/06/">June (1)</a></li>
 411
 412 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/07/">July (3)</a></li>
 413
 414 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/08/">August (1)</a></li>
 415
 416 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/09/">September (1)</a></li>
 417
 418 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/10/">October (1)</a></li>
 419
 420 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/12/">December (1)</a></li>
 421
 422 </ul></li>
 423
 424 <li>2020
 425 <ul>
 426
 427 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/02/">February (2)</a></li>
 428
 429 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/03/">March (2)</a></li>
 430
 431 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/04/">April (2)</a></li>
 432
 433 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/05/">May (3)</a></li>
 434
 435 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/06/">June (2)</a></li>
 436
 437 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/07/">July (1)</a></li>
 438
 439 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/09/">September (1)</a></li>
 440
 441 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/10/">October (1)</a></li>
 442
 443 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/11/">November (1)</a></li>
 444
 445 </ul></li>
 446
 447 <li>2019
 448 <ul>
 449
 450 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/01/">January (4)</a></li>
 451
 452 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/02/">February (3)</a></li>
 453
 454 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/03/">March (3)</a></li>
 455
 456 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/05/">May (2)</a></li>
 457
 458 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/06/">June (5)</a></li>
 459
 460 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/07/">July (2)</a></li>
 461
 462 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/08/">August (1)</a></li>
 463
 464 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/09/">September (1)</a></li>
 465
 466 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/11/">November (1)</a></li>
 467
 468 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/12/">December (4)</a></li>
 469
 470 </ul></li>
 471
 472 <li>2018
 473 <ul>
 474
 475 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 476
 477 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 478
 479 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 480
 481 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 482
 483 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 484
 485 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 486
 487 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 488
 489 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 490
 491 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/10/">October (5)</a></li>
 492
 493 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/11/">November (2)</a></li>
 494
 495 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/12/">December (4)</a></li>
 496
 497 </ul></li>
 498
 499 <li>2017
 500 <ul>
 501
 502 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 503
 504 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 505
 506 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 507
 508 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 509
 510 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 511
 512 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 513
 514 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 515
 516 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 517
 518 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 519
 520 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 521
 522 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 523
 524 </ul></li>
 525
 526 <li>2016
 527 <ul>
 528
 529 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 530
 531 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 532
 533 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 534
 535 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 536
 537 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 538
 539 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 540
 541 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 542
 543 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 544
 545 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 546
 547 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 548
 549 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 550
 551 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 552
 553 </ul></li>
 554
 555 <li>2015
 556 <ul>
 557
 558 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 559
 560 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 561
 562 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 563
 564 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 565
 566 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 567
 568 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 569
 570 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 571
 572 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 573
 574 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 575
 576 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 577
 578 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 579
 580 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 581
 582 </ul></li>
 583
 584 <li>2014
 585 <ul>
 586
 587 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 588
 589 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 590
 591 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 592
 593 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 594
 595 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 596
 597 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 598
 599 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 600
 601 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 602
 603 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 604
 605 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 606
 607 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 608
 609 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 610
 611 </ul></li>
 612
 613 <li>2013
 614 <ul>
 615
 616 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 617
 618 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 619
 620 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 621
 622 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 623
 624 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 625
 626 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 627
 628 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 629
 630 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 631
 632 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 633
 634 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 635
 636 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 637
 638 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 639
 640 </ul></li>
 641
 642 <li>2012
 643 <ul>
 644
 645 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 646
 647 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 648
 649 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 650
 651 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 652
 653 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 654
 655 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 656
 657 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 658
 659 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 660
 661 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 662
 663 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 664
 665 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 666
 667 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 668
 669 </ul></li>
 670
 671 <li>2011
 672 <ul>
 673
 674 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 675
 676 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 677
 678 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 679
 680 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 681
 682 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 683
 684 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 685
 686 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 687
 688 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 689
 690 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 691
 692 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 693
 694 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 695
 696 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 697
 698 </ul></li>
 699
 700 <li>2010
 701 <ul>
 702
 703 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 704
 705 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 706
 707 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 708
 709 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 710
 711 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 712
 713 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 714
 715 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 716
 717 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 718
 719 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 720
 721 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 722
 723 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 724
 725 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 726
 727 </ul></li>
 728
 729 <li>2009
 730 <ul>
 731
 732 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 733
 734 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 735
 736 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 737
 738 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 739
 740 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 741
 742 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 743
 744 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 745
 746 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 747
 748 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 749
 750 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 751
 752 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 753
 754 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 755
 756 </ul></li>
 757
 758 <li>2008
 759 <ul>
 760
 761 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 762
 763 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 764
 765 </ul></li>
 766
 767 </ul>
 768
 769
 770
 771 <h2>Tags</h2>
 772 <ul>
 773
 774  <li><a href="https://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (19)</a></li>
 775
 776  <li><a href="https://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 777
 778  <li><a href="https://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 779
 780  <li><a href="https://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 781
 782  <li><a href="https://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (9)</a></li>
 783
 784  <li><a href="https://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (12)</a></li>
 785
 786  <li><a href="https://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 787
 788  <li><a href="https://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 789
 790  <li><a href="https://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 791
 792  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian">debian (192)</a></li>
 793
 794  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (159)</a></li>
 795
 796  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (9)</a></li>
 797
 798  <li><a href="https://people.skolelinux.org/pere/blog/tags/digistan">digistan (11)</a></li>
 799
 800  <li><a href="https://people.skolelinux.org/pere/blog/tags/dld">dld (18)</a></li>
 801
 802  <li><a href="https://people.skolelinux.org/pere/blog/tags/docbook">docbook (30)</a></li>
 803
 804  <li><a href="https://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 805
 806  <li><a href="https://people.skolelinux.org/pere/blog/tags/english">english (448)</a></li>
 807
 808  <li><a href="https://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 809
 810  <li><a href="https://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (14)</a></li>
 811
 812  <li><a href="https://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (34)</a></li>
 813
 814  <li><a href="https://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
 815
 816  <li><a href="https://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (20)</a></li>
 817
 818  <li><a href="https://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
 819
 820  <li><a href="https://people.skolelinux.org/pere/blog/tags/intervju">intervju (43)</a></li>
 821
 822  <li><a href="https://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
 823
 824  <li><a href="https://people.skolelinux.org/pere/blog/tags/kart">kart (23)</a></li>
 825
 826  <li><a href="https://people.skolelinux.org/pere/blog/tags/kodi">kodi (4)</a></li>
 827
 828  <li><a href="https://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
 829
 830  <li><a href="https://people.skolelinux.org/pere/blog/tags/lego">lego (5)</a></li>
 831
 832  <li><a href="https://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
 833
 834  <li><a href="https://people.skolelinux.org/pere/blog/tags/linuxcnc">linuxcnc (5)</a></li>
 835
 836  <li><a href="https://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 837
 838  <li><a href="https://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 839
 840  <li><a href="https://people.skolelinux.org/pere/blog/tags/madewithcc">madewithcc (3)</a></li>
 841
 842  <li><a href="https://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
 843
 844  <li><a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (45)</a></li>
 845
 846  <li><a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (14)</a></li>
 847
 848  <li><a href="https://people.skolelinux.org/pere/blog/tags/noark5">noark5 (23)</a></li>
 849
 850  <li><a href="https://people.skolelinux.org/pere/blog/tags/norsk">norsk (320)</a></li>
 851
 852  <li><a href="https://people.skolelinux.org/pere/blog/tags/nuug">nuug (198)</a></li>
 853
 854  <li><a href="https://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (40)</a></li>
 855
 856  <li><a href="https://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 857
 858  <li><a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch (3)</a></li>
 859
 860  <li><a href="https://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (75)</a></li>
 861
 862  <li><a href="https://people.skolelinux.org/pere/blog/tags/personvern">personvern (114)</a></li>
 863
 864  <li><a href="https://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
 865
 866  <li><a href="https://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
 867
 868  <li><a href="https://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 869
 870  <li><a href="https://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
 871
 872  <li><a href="https://people.skolelinux.org/pere/blog/tags/robot">robot (17)</a></li>
 873
 874  <li><a href="https://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 875
 876  <li><a href="https://people.skolelinux.org/pere/blog/tags/ruter">ruter (7)</a></li>
 877
 878  <li><a href="https://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 879
 880  <li><a href="https://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (59)</a></li>
 881
 882  <li><a href="https://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 883
 884  <li><a href="https://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
 885
 886  <li><a href="https://people.skolelinux.org/pere/blog/tags/standard">standard (74)</a></li>
 887
 888  <li><a href="https://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (7)</a></li>
 889
 890  <li><a href="https://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (14)</a></li>
 891
 892  <li><a href="https://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (64)</a></li>
 893
 894  <li><a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (5)</a></li>
 895
 896  <li><a href="https://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
 897
 898  <li><a href="https://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
 899
 900  <li><a href="https://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (20)</a></li>
 901
 902  <li><a href="https://people.skolelinux.org/pere/blog/tags/video">video (78)</a></li>
 903
 904  <li><a href="https://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 905
 906  <li><a href="https://people.skolelinux.org/pere/blog/tags/web">web (42)</a></li>
 907
 908 </ul>
 909
 910
 911     </div>
 912     <p style="text-align: right">
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