+ <div class="entry">
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Automatic_Google_Drive_sync_using_grive_in_Debian.html">Automatic Google Drive sync using grive in Debian</a></div>
+ <div class="date"> 4th October 2018</div>
+ <div class="body"><p>A few days, I rescued a Windows victim over to Debian. To try to
+rescue the remains, I helped set up automatic sync with Google Drive.
+I did not find any sensible Debian package handling this
+automatically, so I rebuild the grive2 source from
+<a href="http://www.webupd8.org/">the Ubuntu UPD8 PPA</a> to do the
+task and added a autostart desktop entry and a small shell script to
+run in the background while the user is logged in to do the sync.
+Here is a sketch of the setup for future reference.</p>
+
+<p>I first created <tt>~/googledrive</tt>, entered the directory and
+ran '<tt>grive -a</tt>' to authenticate the machine/user. Next, I
+created a autostart hook in <tt>~/.config/autostart/grive.desktop</tt>
+to start the sync when the user log in:</p>
+
+<p><blockquote><pre>
+[Desktop Entry]
+Name=Google drive autosync
+Type=Application
+Exec=/home/user/bin/grive-sync
+</pre></blockquote></p>
+
+<p>Finally, I wrote the <tt>~/bin/grive-sync</tt> script to sync
+~/googledrive/ with the files in Google Drive.</p>
+
+<p><blockquote><pre>
+#!/bin/sh
+set -e
+cd ~/
+cleanup() {
+ if [ "$syncpid" ] ; then
+ kill $syncpid
+ fi
+}
+trap cleanup EXIT INT QUIT
+/usr/lib/grive/grive-sync.sh listen googledrive 2>&1 | sed "s%^%$0:%" &
+syncpdi=$!
+while true; do
+ if ! xhost >/dev/null 2>&1 ; then
+ echo "no DISPLAY, exiting as the user probably logged out"
+ exit 1
+ fi
+ if [ ! -e /run/user/1000/grive-sync.sh_googledrive ] ; then
+ /usr/lib/grive/grive-sync.sh sync googledrive
+ fi
+ sleep 300
+done 2>&1 | sed "s%^%$0:%"
+</pre></blockquote></p>
+
+<p>Feel free to use the setup if you want. It can be assumed to be
+GNU GPL v2 licensed (or any later version, at your leisure), but I
+doubt this code is possible to claim copyright on.</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="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Valutakrambod___A_python_and_bitcoin_love_story.html">Valutakrambod - A python and bitcoin love story</a></div>
+ <div class="date">29th September 2018</div>
+ <div class="body"><p>It would come as no surprise to anyone that I am interested in
+bitcoins and virtual currencies. I've been keeping an eye on virtual
+currencies for many years, and it is part of the reason a few months
+ago, I started writing a python library for collecting currency
+exchange rates and trade on virtual currency exchanges. I decided to
+name the end result valutakrambod, which perhaps can be translated to
+small currency shop.</p>
+
+<p>The library uses the tornado python library to handle HTTP and
+websocket connections, and provide a asynchronous system for
+connecting to and tracking several services. The code is available
+from
+<a href="http://github.com/petterreinholdtsen/valutakrambod">github</a>.</p>
+
+</p>There are two example clients of the library. One is very simple and
+list every updated buy/sell price received from the various services.
+This code is started by running bin/btc-rates and call the client code
+in valutakrambod/client.py. The simple client look like this:</p>
+
+<p><blockquote><pre>
+import functools
+import tornado.ioloop
+import valutakrambod
+class SimpleClient(object):
+ def __init__(self):
+ self.services = []
+ self.streams = []
+ pass
+ def newdata(self, service, pair, changed):
+ print("%-15s %s-%s: %8.3f %8.3f" % (
+ service.servicename(),
+ pair[0],
+ pair[1],
+ service.rates[pair]['ask'],
+ service.rates[pair]['bid'])
+ )
+ async def refresh(self, service):
+ await service.fetchRates(service.wantedpairs)
+ def run(self):
+ self.ioloop = tornado.ioloop.IOLoop.current()
+ self.services = valutakrambod.service.knownServices()
+ for e in self.services:
+ service = e()
+ service.subscribe(self.newdata)
+ stream = service.websocket()
+ if stream:
+ self.streams.append(stream)
+ else:
+ # Fetch information from non-streaming services immediately
+ self.ioloop.call_later(len(self.services),
+ functools.partial(self.refresh, service))
+ # as well as regularly
+ service.periodicUpdate(60)
+ for stream in self.streams:
+ stream.connect()
+ try:
+ self.ioloop.start()
+ except KeyboardInterrupt:
+ print("Interrupted by keyboard, closing all connections.")
+ pass
+ for stream in self.streams:
+ stream.close()
+</pre></blockquote></p>
+
+<p>The library client loops over all known "public" services,
+initialises it, subscribes to any updates from the service, checks and
+activates websocket streaming if the service provide it, and if no
+streaming is supported, fetches information from the service and sets
+up a periodic update every 60 seconds. The output from this client
+can look like this:</p>
+
+<p><blockquote><pre>
+Bl3p BTC-EUR: 5687.110 5653.690
+Bl3p BTC-EUR: 5687.110 5653.690
+Bl3p BTC-EUR: 5687.110 5653.690
+Hitbtc BTC-USD: 6594.560 6593.690
+Hitbtc BTC-USD: 6594.560 6593.690
+Bl3p BTC-EUR: 5687.110 5653.690
+Hitbtc BTC-USD: 6594.570 6593.690
+Bitstamp EUR-USD: 1.159 1.154
+Hitbtc BTC-USD: 6594.570 6593.690
+Hitbtc BTC-USD: 6594.580 6593.690
+Hitbtc BTC-USD: 6594.580 6593.690
+Hitbtc BTC-USD: 6594.580 6593.690
+Bl3p BTC-EUR: 5687.110 5653.690
+Paymium BTC-EUR: 5680.000 5620.240
+</pre></blockquote></p>
+
+<p>The exchange order book is tracked in addition to the best buy/sell
+price, for those that need to know the details.</p>
+
+<p>The other example client is focusing on providing a curses view
+with updated buy/sell prices as soon as they are received from the
+services. This code is located in bin/btc-rates-curses and activated
+by using the '-c' argument. Without the argument the "curses" output
+is printed without using curses, which is useful for debugging. The
+curses view look like this:</p>
+
+<p><blockquote><pre>
+ Name Pair Bid Ask Spr Ftcd Age
+ BitcoinsNorway BTCEUR 5591.8400 5711.0800 2.1% 16 nan 60
+ Bitfinex BTCEUR 5671.0000 5671.2000 0.0% 16 22 59
+ Bitmynt BTCEUR 5580.8000 5807.5200 3.9% 16 41 60
+ Bitpay BTCEUR 5663.2700 nan nan% 15 nan 60
+ Bitstamp BTCEUR 5664.8400 5676.5300 0.2% 0 1 1
+ Bl3p BTCEUR 5653.6900 5684.9400 0.5% 0 nan 19
+ Coinbase BTCEUR 5600.8200 5714.9000 2.0% 15 nan nan
+ Kraken BTCEUR 5670.1000 5670.2000 0.0% 14 17 60
+ Paymium BTCEUR 5620.0600 5680.0000 1.1% 1 7515 nan
+ BitcoinsNorway BTCNOK 52898.9700 54034.6100 2.1% 16 nan 60
+ Bitmynt BTCNOK 52960.3200 54031.1900 2.0% 16 41 60
+ Bitpay BTCNOK 53477.7833 nan nan% 16 nan 60
+ Coinbase BTCNOK 52990.3500 54063.0600 2.0% 15 nan nan
+ MiraiEx BTCNOK 52856.5300 54100.6000 2.3% 16 nan nan
+ BitcoinsNorway BTCUSD 6495.5300 6631.5400 2.1% 16 nan 60
+ Bitfinex BTCUSD 6590.6000 6590.7000 0.0% 16 23 57
+ Bitpay BTCUSD 6564.1300 nan nan% 15 nan 60
+ Bitstamp BTCUSD 6561.1400 6565.6200 0.1% 0 2 1
+ Coinbase BTCUSD 6504.0600 6635.9700 2.0% 14 nan 117
+ Gemini BTCUSD 6567.1300 6573.0700 0.1% 16 89 nan
+ Hitbtc+BTCUSD 6592.6200 6594.2100 0.0% 0 0 0
+ Kraken BTCUSD 6565.2000 6570.9000 0.1% 15 17 58
+ Exchangerates EURNOK 9.4665 9.4665 0.0% 16 107789 nan
+ Norgesbank EURNOK 9.4665 9.4665 0.0% 16 107789 nan
+ Bitstamp EURUSD 1.1537 1.1593 0.5% 4 5 1
+ Exchangerates EURUSD 1.1576 1.1576 0.0% 16 107789 nan
+ BitcoinsNorway LTCEUR 1.0000 49.0000 98.0% 16 nan nan
+ BitcoinsNorway LTCNOK 492.4800 503.7500 2.2% 16 nan 60
+ BitcoinsNorway LTCUSD 1.0221 49.0000 97.9% 15 nan nan
+ Norgesbank USDNOK 8.1777 8.1777 0.0% 16 107789 nan
+</pre></blockquote></p>
+
+<p>The code for this client is too complex for a simple blog post, so
+you will have to check out the git repository to figure out how it
+work. What I can tell is how the three last numbers on each line
+should be interpreted. The first is how many seconds ago information
+was received from the service. The second is how long ago, according
+to the service, the provided information was updated. The last is an
+estimate on how often the buy/sell values change.</p>
+
+<p>If you find this library useful, or would like to improve it, I
+would love to hear from you. Note that for some of the services I've
+implemented a trading API. It might be the topic of a future blog
+post.</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="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/VLC_in_Debian_now_can_do_bittorrent_streaming.html">VLC in Debian now can do bittorrent streaming</a></div>
+ <div class="date">24th September 2018</div>
+ <div class="body"><p>Back in February, I got curious to see
+<a href="http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html">if
+VLC now supported Bittorrent streaming</a>. It did not, despite the
+fact that the idea and code to handle such streaming had been floating
+around for years. I did however find
+<a href="https://github.com/johang/vlc-bittorrent">a standalone plugin
+for VLC</a> to do it, and half a year later I decided to wrap up the
+plugin and get it into Debian. I uploaded it to NEW a few days ago,
+and am very happy to report that it
+<a href="https://tracker.debian.org/pkg/vlc-plugin-bittorrent">entered
+Debian</a> a few hours ago, and should be available in Debian/Unstable
+tomorrow, and Debian/Testing in a few days.</p>
+
+<p>With the vlc-plugin-bittorrent package installed you should be able
+to stream videos using a simple call to</p>
+
+<p><blockquote><pre>
+vlc https://archive.org/download/TheGoat/TheGoat_archive.torrent
+</pre></blockquote></p>
+
+</p>It can handle magnet links too. Now if only native vlc had
+bittorrent support. Then a lot more would be helping each other to
+share public domain and creative commons movies. The plugin need some
+stability work with seeking and picking the right file in a torrent
+with many files, but is already usable. Please note that the plugin
+is not removing downloaded files when vlc is stopped, so it can fill
+up your disk if you are not careful. Have fun. :)</p>
+
+<p>I would love to get help maintaining this package. Get in touch if
+you are interested.</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="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Using_the_Kodi_API_to_play_Youtube_videos.html">Using the Kodi API to play Youtube videos</a></div>
+ <div class="date"> 2nd September 2018</div>
+ <div class="body"><p>I continue to explore my Kodi installation, and today I wanted to
+tell it to play a youtube URL I received in a chat, without having to
+insert search terms using the on-screen keyboard. After searching the
+web for API access to the Youtube plugin and testing a bit, I managed
+to find a recipe that worked. If you got a kodi instance with its API
+available from http://kodihost/jsonrpc, you can try the following to
+have check out a nice cover band.</p>
+
+<p><blockquote><pre>curl --silent --header 'Content-Type: application/json' \
+ --data-binary '{ "id": 1, "jsonrpc": "2.0", "method": "Player.Open",
+ "params": {"item": { "file":
+ "plugin://plugin.video.youtube/play/?video_id=LuRGVM9O0qg" } } }' \
+ http://projector.local/jsonrpc</pre></blockquote></p>
+
+<p>I've extended kodi-stream program to take a video source as its
+first argument. It can now handle direct video links, youtube links
+and 'desktop' to stream my desktop to Kodi. It is almost like a
+Chromecast. :)</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="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
<div class="entry">
<div class="title"><a href="http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html">Software created using taxpayers’ money should be Free Software</a></div>
<div class="date">30th August 2018</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html">What is the most supported MIME type in Debian in 2018?</a></div>
- <div class="date"> 9th July 2018</div>
- <div class="body"><p>Five years ago,
-<a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html">I
-measured what the most supported MIME type in Debian was</a>, by
-analysing the desktop files in all packages in the archive. Since
-then, the DEP-11 AppStream system has been put into production, making
-the task a lot easier. This made me want to repeat the measurement,
-to see how much things changed. Here are the new numbers, for
-unstable only this time:
-
-<p><strong>Debian Unstable:</strong></p>
-
-<pre>
- count MIME type
- ----- -----------------------
- 56 image/jpeg
- 55 image/png
- 49 image/tiff
- 48 image/gif
- 39 image/bmp
- 38 text/plain
- 37 audio/mpeg
- 34 application/ogg
- 33 audio/x-flac
- 32 audio/x-mp3
- 30 audio/x-wav
- 30 audio/x-vorbis+ogg
- 29 image/x-portable-pixmap
- 27 inode/directory
- 27 image/x-portable-bitmap
- 27 audio/x-mpeg
- 26 application/x-ogg
- 25 audio/x-mpegurl
- 25 audio/ogg
- 24 text/html
-</pre>
-
-<p>The list was created like this using a sid chroot: "cat
-/var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk '/^
-- \S+\/\S+$/ {print $2 }' | sort | uniq -c | sort -nr | head -20"</p>
-
-<p>It is interesting to see how image formats have passed text/plain
-as the most announced supported MIME type. These days, thanks to the
-AppStream system, if you run into a file format you do not know, and
-want to figure out which packages support the format, you can find the
-MIME type of the file using "file --mime <filename>", and then
-look up all packages announcing support for this format in their
-AppStream metadata (XML or .desktop file) using "appstreamcli
-what-provides mimetype <mime-type>. For example if you, like
-me, want to know which packages support inode/directory, you can get a
-list like this:</p>
-
-<p><blockquote><pre>
-% appstreamcli what-provides mimetype inode/directory | grep Package: | sort
-Package: anjuta
-Package: audacious
-Package: baobab
-Package: cervisia
-Package: chirp
-Package: dolphin
-Package: doublecmd-common
-Package: easytag
-Package: enlightenment
-Package: ephoto
-Package: filelight
-Package: gwenview
-Package: k4dirstat
-Package: kaffeine
-Package: kdesvn
-Package: kid3
-Package: kid3-qt
-Package: nautilus
-Package: nemo
-Package: pcmanfm
-Package: pcmanfm-qt
-Package: qweborf
-Package: ranger
-Package: sirikali
-Package: spacefm
-Package: spacefm
-Package: vifm
-%
-</pre></blockquote></p>
-
-<p>Using the same method, I can quickly discover that the Sketchup file
-format is not yet supported by any package in Debian:</p>
-
-<p><blockquote><pre>
-% appstreamcli what-provides mimetype application/vnd.sketchup.skp
-Could not find component providing 'mimetype::application/vnd.sketchup.skp'.
-%
-</pre></blockquote></p>
-
-<p>Yesterday I used it to figure out which packages support the STL 3D
-format:</p>
-
-<p><blockquote><pre>
-% appstreamcli what-provides mimetype application/sla|grep Package
-Package: cura
-Package: meshlab
-Package: printrun
-%
-</pre></blockquote></p>
-
-<p>PS: A new version of Cura was uploaded to Debian yesterday.</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="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html">Debian APT upgrade without enough free space on the disk...</a></div>
- <div class="date"> 8th July 2018</div>
- <div class="body"><p>Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
-for a while, and when I need to update it there is not enough free
-space on the disk for apt to do a normal 'apt upgrade'. I normally
-would resolve the issue by doing 'apt install <somepackages>' to
-upgrade only some of the packages in one batch, until the amount of
-packages to download fall below the amount of free space available.
-Today, I had about 500 packages to upgrade, and after a while I got
-tired of trying to install chunks of packages manually. I concluded
-that I did not have the spare hours required to complete the task, and
-decided to see if I could automate it. I came up with this small
-script which I call 'apt-in-chunks':</p>
-
-<p><blockquote><pre>
-#!/bin/sh
-#
-# Upgrade packages when the disk is too full to upgrade every
-# upgradable package in one lump. Fetching packages to upgrade using
-# apt, and then installing using dpkg, to avoid changing the package
-# flag for manual/automatic.
-
-set -e
-
-ignore() {
- if [ "$1" ]; then
- grep -v "$1"
- else
- cat
- fi
-}
-
-for p in $(apt list --upgradable | ignore "$@" |cut -d/ -f1 | grep -v '^Listing...'); do
- echo "Upgrading $p"
- apt clean
- apt install --download-only -y $p
- for f in /var/cache/apt/archives/*.deb; do
- if [ -e "$f" ]; then
- dpkg -i /var/cache/apt/archives/*.deb
- break
- fi
- done
-done
-</pre></blockquote></p>
-
-<p>The script will extract the list of packages to upgrade, try to
-download the packages needed to upgrade one package, install the
-downloaded packages using dpkg. The idea is to upgrade packages
-without changing the APT mark for the package (ie the one recording of
-the package was manually requested or pulled in as a dependency). To
-use it, simply run it as root from the command line. If it fail, try
-'apt install -f' to clean up the mess and run the script again. This
-might happen if the new packages conflict with one of the old
-packages. dpkg is unable to remove, while apt can do this.</p>
-
-<p>It take one option, a package to ignore in the list of packages to
-upgrade. The option to ignore a package is there to be able to skip
-the packages that are simply too large to unpack. Today this was
-'ghc', but I have run into other large packages causing similar
-problems earlier (like TeX).</p>
-
-<p>Update 2018-07-08: Thanks to Paul Wise, I am aware of two
-alternative ways to handle this. The "unattended-upgrades
---minimal-upgrade-steps" option will try to calculate upgrade sets for
-each package to upgrade, and then upgrade them in order, smallest set
-first. It might be a better option than my above mentioned script.
-Also, "aptutude upgrade" can upgrade single packages, thus avoiding
-the need for using "dpkg -i" in the script above.</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="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html">The worlds only stone power plant?</a></div>
- <div class="date">30th June 2018</div>
- <div class="body"><p>So far, at least hydro-electric power, coal power, wind power,
-solar power, and wood power are well known. Until a few days ago, I
-had never heard of stone power. Then I learn about a quarry in a
-mountain in
-<a href="https://en.wikipedia.org/wiki/Bremanger">Bremanger</a> i
-Norway, where
-<a href="https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/">the
-Bremanger Quarry</a> company is extracting stone and dumping the stone
-into a shaft leading to its shipping harbour. This downward movement
-in this shaft is used to produce electricity. In short, it is using
-falling rocks instead of falling water to produce electricity, and
-according to its own statements it is producing more power than it is
-using, and selling the surplus electricity to the Norwegian power
-grid. I find the concept truly amazing. Is this the worlds only
-stone power plant?</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="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html">Add-on to control the projector from within Kodi</a></div>
- <div class="date">26th June 2018</div>
- <div class="body"><p>My movie playing setup involve <a href="https://kodi.tv/">Kodi</a>,
-<a href="https://openelec.tv">OpenELEC</a> (probably soon to be
-replaced with <a href="https://libreelec.tv/">LibreELEC</a>) and an
-Infocus IN76 video projector. My projector can be controlled via both
-a infrared remote controller, and a RS-232 serial line. The vendor of
-my projector, <a href="https://www.infocus.com/">InFocus</a>, had been
-sensible enough to document the serial protocol in its user manual, so
-it is easily available, and I used it some years ago to write
-<a href="https://github.com/petterreinholdtsen/infocus-projector-control">a
-small script to control the projector</a>. For a while now, I longed
-for a setup where the projector was controlled by Kodi, for example in
-such a way that when the screen saver went on, the projector was
-turned off, and when the screen saver exited, the projector was turned
-on again.</p>
-
-<p>A few days ago, with very good help from parts of my family, I
-managed to find a Kodi Add-on for controlling a Epson projector, and
-got in touch with its author to see if we could join forces and make a
-Add-on with support for several projectors. To my pleasure, he was
-positive to the idea, and we set out to add InFocus support to his
-add-on, and make the add-on suitable for the official Kodi add-on
-repository.</p>
-
-<p>The Add-on is now working (for me, at least), with a few minor
-adjustments. The most important change I do relative to the master
-branch in the github repository is embedding the
-<a href="https://github.com/pyserial/pyserial">pyserial module</a> in
-the add-on. The long term solution is to make a "script" type
-pyserial module for Kodi, that can be pulled in as a dependency in
-Kodi. But until that in place, I embed it.</p>
-
-<p>The add-on can be configured to turn on the projector when Kodi
-starts, off when Kodi stops as well as turn the projector off when the
-screensaver start and on when the screesaver stops. It can also be
-told to set the projector source when turning on the projector.
-
-<p>If this sound interesting to you, check out
-<a href="https://github.com/fredrik-eriksson/kodi_projcontrol">the
-project github repository</a>. Perhaps you can send patches to
-support your projector too? As soon as we find time to wrap up the
-latest changes, it should be available for easy installation using any
-Kodi instance.</p>
-
-<p>For future improvements, I would like to add projector model
-detection and the ability to adjust the brightness level of the
-projector from within Kodi. We also need to figure out how to handle
-the cooling period of the projector. My projector refuses to turn on
-for 60 seconds after it was turned off. This is not handled well by
-the add-on at the moment.</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="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2018/10/">October (1)</a></li>
+
</ul></li>
<li>2017
<li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
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- <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (161)</a></li>
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