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    <title>chrisjrob: personal</title>
    <link>https://chrisjrob.com</link>
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    <description>GNU Linux, Perl and FLOSS</description>
    <language>en-gb</language>
    <pubDate>Fri, 13 Feb 2026 17:22:31 +0000</pubDate>
    <lastBuildDate>Fri, 13 Feb 2026 17:22:31 +0000</lastBuildDate>
    
    <item>
      <title>Affordable Granite</title>
      <link>https://chrisjrob.com/2015/03/17/affordable-granite/</link>
      <pubDate>Tue, 17 Mar 2015 19:30:00 +0000</pubDate>
      <author>chrisjrob@gmail.com (Chris Roberts)</author>
      <guid>https://chrisjrob.com/2015/03/17/affordable-granite</guid>
      <description>
       <![CDATA[
         
         <p>When we moved into our new house one irritation was that the kitchen was
not really bad enough to warrant replacing, but the laminate worktop was
looking tired and was really dragging the kitchen down. We decided to
see if we could replace our worktop with a new granite one.</p>

<!--more-->

<p>The first quote we received was three times what we expected, and we
could have had a new kitchen for very little more. The second quote was
more reasonable, but still 50% more than we were prepared to spend. Some
desperate Googling came up with <a href="http://www.affordablegranite.co.uk/" title="Affordable Granite">Affordable
Granite</a>.</p>

<p>There were other similar sites around, but some Googling revealed many
positive customer reviews for Affordable Granite, and so we made
contact. The quote was still over our initial budget, but far less than
the other quotes received and we accepted their quote.</p>

<p>Well to cut a long story short, our new kitchen worktop looks fabulous
and was not only less expensive than the other quotes that we received,
had fewer compromises (decent thickness granite, included a new
under-mounted sink and an additional breakfast bar), and was completed
in a single week when other companies were suggesting two weeks. Better
still our hob and sink were kept operational for all but two days, when
one supplier told us that they would be disconnected at the beginning
and reconnected at the end.</p>

<p>The actual installation did not go completely smoothly, thanks to our
kitchen units being uneven and the adjustable feet having seized up,
with the result that we had workmen on site for longer than expected.
But at all times this remained their problem and not ours and they did
everything possible to ensure that our kitchen was completed on-time.</p>

<p>In short we are delighted with our new kitchen and very happy with the
service received from Affordable Granite.</p>

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    <item>
      <title>Soft Shackles</title>
      <link>https://chrisjrob.com/2014/05/11/soft-shackles/</link>
      <pubDate>Sun, 11 May 2014 00:00:00 +0000</pubDate>
      <author>chrisjrob@gmail.com (Chris Roberts)</author>
      <guid>https://chrisjrob.com/2014/05/11/soft-shackles</guid>
      <description>
       <![CDATA[
         
           <img src="https://chrisjrob.com/assets/soft-shackle.jpg" align="right" alt="Featured Image">
         
         <p>I’ve been looking into the best method for attaching sheets to the
foresail. Metal shackles are dangerous and can rip holes in sails,
bowlines are unreliable knots when not under pressure, and a continuous
line looped in the middle through the clew is likely to compress the
clew over time.</p>

<!--more-->

<p><a href="/assets/soft-shackle3.gif"><img src="/assets/soft-shackle3.gif" alt="Soft Shackle Animation" /></a></p>

<p>The ideal solution appears to be to splice soft eyes into the end of
each sheet, and attach them to the clew with a “soft shackle”. Being a
lover of knots, I thought I’d give it a go and this was my first
attempt. The surprising thing was the cost - I used 5mm Marlow Excel
Vectram 12, at a cost of £5.91 per metre, which is enough to make a
single soft shackle. The reason is the strength 5mm Vectram has a
similar strength to 10mm braid on braid, 2400kgs breaking strain.</p>

<p>I followed the instructions in <a href="http://www.colligomarine.com/gallery-documents/documents/colligo-how-to-splice-videos" title="Colligo Marine: Soft Shackles">this
video</a>,
which resulted in a 5 inch loop, too short for the intended purpose. A
second attempt with a 7 inch loop looks long enough; although I have not
yet tried it on the boat. The next step will be to splice soft eyes into
each sheet.</p>


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    <item>
      <title>Visual Eyes Microwave Oven Repair</title>
      <link>https://chrisjrob.com/2014/05/01/visual-eyes-microwave-oven-repair/</link>
      <pubDate>Thu, 01 May 2014 00:00:00 +0000</pubDate>
      <author>chrisjrob@gmail.com (Chris Roberts)</author>
      <guid>https://chrisjrob.com/2014/05/01/visual-eyes-microwave-oven-repair</guid>
      <description>
       <![CDATA[
         
         <p>Our built-in De-Dietrich microwave over has been broken for weeks.
Initially the door catch had broken, but a replacement catch DIY-fitted
had not fixed the problem.</p>

<p>De-Dietrich’s service agent wanted £195 to come out and fix the oven - a
ludicrous price for a 13 year old microwave. Other appliance repair
centres would either not repair microwave ovens at all, or particularly
excluded De-Dietrich.</p>

<!--more-->

<p>Fortunately one such appliance repair person recommended that we contact
<a href="http://www.visual-eyes.eu/Pages/CommercialMicrowaveRepairs.aspx" title="Visual Eyes">Visual Eyes in Farnham,
Surrey</a>.
We did so, and the next day a nice man came and fixed our oven for £40.</p>

<p>Great service, thank you Visual Eyes.</p>

<h6 id="nb-if-you-received-this-post-in-your-rss-aggregator-and-would-rather-not-have-done-then-please-be-assured-that-such-posts-will-be-rare-if-youd-rather-not-take-the-risk-then-i-do-also-maintain-separate-rss-feeds-for-technology-and-personal-and-even-sub-categories-such-as-sailing-and-linux-just-follow-the-relevant-menu-option-from-my-home-page-and-see-the-rss-feed-in-the-address-bar">N.B. If you received this post in your RSS aggregator and would rather not have done, then please be assured that such posts will be rare. If you’d rather not take the risk, then I do also maintain separate RSS feeds for Technology and Personal and even sub-categories such as Sailing and Linux. Just follow the relevant menu option from my home page and see the RSS feed in the address bar.</h6>

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    <item>
      <title>Braid On Braid Splicing</title>
      <link>https://chrisjrob.com/2013/06/13/braid-on-braid-splicing/</link>
      <pubDate>Thu, 13 Jun 2013 00:00:00 +0000</pubDate>
      <author>chrisjrob@gmail.com (Chris Roberts)</author>
      <guid>https://chrisjrob.com/2013/06/13/braid-on-braid-splicing</guid>
      <description>
       <![CDATA[
         
           <img src="https://chrisjrob.com/assets/splicing_300.png" align="right" alt="Featured Image">
         
         <p>Having been quoted £250 to replace the halyards and topping lift on my
boat, I decided to do it myself, by purchasing the ropes from eBay for
£100 and the fids to do the splicing for £33.</p>

<p>Having the fids would then enable me to do the rest of the running
rigging: reefing pennants, kicking strap etc.</p>

<!--more-->

<p>The only trouble was that I didn’t know how to splice braid-on-braid,
and it turned out to be more tricky than I expected. In the end I found
a <a href="http://youtu.be/Ym1-rI0SdaA">YouTube video</a> to help me.</p>


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    <item>
      <title>Surrey Shore Based Rya Training</title>
      <link>https://chrisjrob.com/2013/02/11/surrey-shore-based-rya-training/</link>
      <pubDate>Mon, 11 Feb 2013 00:00:00 +0000</pubDate>
      <author>chrisjrob@gmail.com (Chris Roberts)</author>
      <guid>https://chrisjrob.com/2013/02/11/surrey-shore-based-rya-training</guid>
      <description>
       <![CDATA[
         
           <img src="https://chrisjrob.com/assets/rya_training.jpg" align="right" alt="Featured Image">
         
         <p><a href="http://www.surrey-shorebased.co.uk" title="Surrey Shore-based RYA Training">Surrey Shore-based RYA
Training</a></p>

<p>I was delighted to find <a href="http://www.surrey-shorebased.co.uk" title="Surrey Shore-based RYA Training">this local RYA training
centre</a>.
Operated from Phil’s back garden, you expect the worst, but actually the
facilities are excellent, with a proper classroom with tables,
projector, VHFs, tea and coffee etc.</p>

<p>I recently had my Marine VHF training there and I thought the course was
excellent and I plan to go on to do my Day Skipper training at a later
date.</p>


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    <item>
      <title>Polarnavy</title>
      <link>https://chrisjrob.com/2013/02/06/polarnavy/</link>
      <pubDate>Wed, 06 Feb 2013 00:00:00 +0000</pubDate>
      <author>chrisjrob@gmail.com (Chris Roberts)</author>
      <guid>https://chrisjrob.com/2013/02/06/polarnavy</guid>
      <description>
       <![CDATA[
         
           <img src="https://chrisjrob.com/assets/polar-navy.png" align="right" alt="Featured Image">
         
         <p>Following <a href="/2012/09/17/gps-on-linux/" title="GPS on Linux">an earlier post on using GPS</a> under Ubuntu, I have been
trying to get <a href="http://www.polarnavy.com/" title="Polar Navy">PolarNavy</a>
working under Ubuntu 12.10. Polar Navy is the only Linux chart
navigation software available for Linux. I know people will correct me
by quoting <a href="http://opencpn.org/" title="OpenCPN">OpenCPN</a>, but there are no
charts currently legally available for the UK, at least that I could
find.</p>

<!--more-->

<p>Polar Navy has two components - PolarCOM which communicates with the GPS
receiver, and PolarView which displays the actual charts. The two
applications can connect together, to show the vessel’s current
position.</p>

<p>I had Polar Navy working fine under Ubuntu 12.04 i386, but for some
reason I had problems running under Ubuntu 12.10 amd64. The problem was
that PolarCOM would simply not display the position, i.e. the Lat and
Long. I tried running from the command line, and there were a large
number of errors when running PolarCOM, for example:\</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>menu_proxy_module_load': ./PolarCOM.bin: undefined symbol: menu_proxy_module_load (PolarCOM.bin:4487): Gtk-WARNING **: Failed to load type module: (null)
</code></pre></div></div>

<p>I eventually fixed that by adding the following to the
/opt/polarcom/bin/PolarCOM script:</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>export UBUNTU_MENUPROXY=0
</code></pre></div></div>

<p>Sadly PolarCOM was still not working. The GPS Receiver that I use is the
BU-353, a terrific piece of hardware that “just works” under Linux. This
is the recommended GPS for Polar Navy, which was a happy coincidence.
When I plugged in the receiver it was detected as /dev/ttyUSB0, which I
noticed had a group “dialout”. I added myself to that group:</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ sudo adduser dialout
</code></pre></div></div>

<p>I posted <a href="http://support.polarnavy.com/forum/read.php?1,494" title="PolarNavy support">a request for help</a>
on the Polar Navy forums and they suggested I connect directly to the
receiver using screen. I was unsure how to terminate that session, but
ended up killing the screen session (Ctrl+Alt+a followed by k to kill).
There is probably a better way - feel free to comment below.:</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ screen /dev/ttyUSB0 4800
</code></pre></div></div>

<p>But doing so just output a load of binary garbage, which I realised
(with help from Surrey LUG IRC #surrey on irc.lug.org.uk) meant that
the receiver was no longer in NMEA mode. Apparently GPSD automatically
reconfigures the receiver to SIRC III binary. I have no idea why this
was not a problem in Ubuntu 12.04.</p>

<p>To fix this problem I needed to ensure that GPSD was not running.
Unfortunately stopping the service does not seem to terminate the
process, so I also had to kill it off:</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ sudo service gpsd stop
$ ps aux | grep gps
$ killall PolarCOM.bin
</code></pre></div></div>

<p>Next I placed the GPS receiver into NMEA ASCII mode, instead of SIRCIII
Binary mode:</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ gpsctl -f -n /dev/ttyUSB0
</code></pre></div></div>

<p>Lastly, you may also need to configure the serial port, although I did
not need to do this:</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ stty -F /dev/ttyUSB0 ispeed 4800
</code></pre></div></div>

<p>A quick check to see that we are getting ASCII NMEA sentences, showed
that it was working perfectly, with easy to read text output from the
receiver.</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ screen /dev/ttyUSB0 4800
</code></pre></div></div>

<p>To prevent GPSD from reconfiguring the receiver again, I then needed to
reconfigure it to use read-only mode:</p>

<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ sudo dpkg-reconfigure gpsd
</code></pre></div></div>

<p>And at the point where it requests switches, I added “-b” (Broken Device
Safety Mode), otherwise known as read-only mode.</p>

<p>With trepidation I launched PolarCOM, which immediately showed my
current position.</p>


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    <item>
      <title>Is Your Prop Left Or Right Handed</title>
      <link>https://chrisjrob.com/2013/02/06/is-your-prop-left-or-right-handed/</link>
      <pubDate>Wed, 06 Feb 2013 00:00:00 +0000</pubDate>
      <author>chrisjrob@gmail.com (Chris Roberts)</author>
      <guid>https://chrisjrob.com/2013/02/06/is-your-prop-left-or-right-handed</guid>
      <description>
       <![CDATA[
         
           <img src="https://chrisjrob.com/assets/prop.jpg" align="right" alt="Featured Image">
         
         <p>I was a bit surprised to be asked if my prop was left or right-handed.
Turns out that my boat is unusual in being left-handed, as the prop
spins anti-clockwise. This means that the prop-wash will make it easier
to moor starboard side-to, which is important when choosing a berth.</p>


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