News archive December 2007 - Koos van den Hout

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2007-12-31 (#) 12 years ago
We recently hung up some bird food in the back garden (way out of reach of the cats!) and it is funny to see little birds visit in the morning and the afternoon. This morning I took time to set up the camera and await interesting results. The wait (and cold) was worth it:
Bluetit in the garden feeding (looks a lot better in full-size)
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2007-12-30 (#) 12 years ago
I dug up the Conrad weatherstation I'm planning to use as weatherstation in project sundial. I updated the page with information about the order-numbers of the different parts (no longer available from Conrad). So far, most sensors seem ok (although I'm not sure everything is calibrated) but the rain sensor gives absolutely no usable readouts and gives weird numbers for the calibration procedure. The wind speed sensor is a simple revolution counter which will need some software work to convert to average wind speed and wind gusts.

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2007-12-29 (#) 12 years ago
Yesterday evening I took my Dell Latitude C640 laptop apart to see if I could fix the USB connector and/or make some better connection for powering the GPS for wardriving. No luck: even with the mainboard removed from the case there still is no room for repairing the USB connector or fixing something to the remains of the keyboard connector. Today I took the wardrive setup with me but the last message from kismet was the dreaded: Didn't log any GPS coordinates, unlinking gps file.

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2007-12-22 (#) 12 years ago
At work we now graph several temperatures in the serverroom (results are not public). We joked (or not..) last Friday that we could add a lot of sensors inside and outside the serverroom (that is where my thinking about 1-wire systems came in again) and have someone research this micro-climate and correlate the micro-climate with the ntp statistics. We did see the influence of the cold wind from the east on the pll stats of several ntp servers.

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2007-12-21 (#) 12 years ago
Some environment sensors at home are now public. Started with the environment sensors of the home server gosper which are the easiest. Other stuff will be added if and when certain monitoring projects go from being a wild idea to delivering real data. Ok, I did order some temperature sensors and a 1-wire controller from Hobby Boards 1-wire solutions.

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2007-12-20 (#) 12 years ago
At work I "took over" a fourfold temperature sensor, Quozl's Temperature Sensor. It got me interested in the 1-wire system for sensors. Applications like Thermd and DigiTemp make it possible to log all kinds of environmental data easily. I'm seriously considering getting a simple 1-wire interface for the server at home so I can monitor several inside temperatures (the cheapest to monitor and the most interesting to me) by just stringing some cheap phone wires and hook up sensors. Yet another network, although this one would be simpler to maintain.

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2007-12-18 (#) 12 years ago
Het bestaat nog en je kunt het nog aanschaffen: Telix modem communicatie software voor DOS en Windows.

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2007-12-15 (#) 12 years ago
Op zoek naar heel wat anders (natuurlijk) kwam ik wat schermen tegen van het BBS die ik ooit gemaakt heb op (gezien de datum in een van de schermen) 12 Januari 1995 (nu bijna 13 jaar geleden). Grappig om die schermen weer eens terug te zien, ik weet dat ik toen veel tijd stak in de ontwerpen van de schermen. Schermen BBS Koos z'n Doos.

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2007-12-14 (#) 12 years ago
Fietspomp ergernis opgelost: een BBB BFP-05 AirStrike II fietspomp aangeschaft. Nogsteeds wilden de banden van een fiets niet meewerken tot ik ze grotendeels liet leeglopen, daarna kreeg ik er prima weer lucht in (zelfs meer dan de bedoeling was).

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2007-12-13 (#) 12 years ago
Google maps: oversteek van hoogspanningsleiding die vanmorgen beschadigd werd.

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2007-12-13 (#) 12 years ago
Ergernis van vandaag: zogeheten franse ventielen. We hebben een verloopstukje waarmee in theorie een ouderwetse fietspomp toch kan samenwerken met zo'n ventiel maar ik zag vanmorgen ineens waar de lucht in feite heengaat: het ventieldopje wat ik vlak naast de band had laten liggen werd een stukje weggeblazen en de band bleef zacht.

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2007-12-12 (#) 12 years ago
After a Monday filled with part of the network at work being down I dug up the 'luxlite' text sign that clutters one of the desks at work. Digging up the protocol it listens to was harder as all searches with luxlite talk about a different protocol (which we do use in another text sign). So, this particular 'luxlite' uses a protocol which is known as Prolite Protocol which is not too hard to program. At this moment it signals everything works.

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2007-12-12 (#) 12 years ago
Major bad weather in Oklahoma at the moment. Some pictures and videos at TornadoVideos, normally for other extreme weather happening in Oklahoma. Link via Randal Bradakis.

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2007-12-08 (#) 12 years ago
Today I tried the Siemens Gigaset C450 IP base again and noticed it now works with Firefox. On the previous try I was only able to configure it from IE. I suggested to Gigaset support to fix this and make it work with all browsers, I guess they acted upon this advice and an automatic software update to the base happened. The reason to try it again was that I gave a demonstration of the PCgg voip setup.

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2007-12-07 (#) 12 years ago
Advertisment by Axa in Dutch Axa bike locks, quite popular in the Netherlands have a vulnerability which the bike thieves found first. Now described by Barry Wels in blackbag : AXA: A new phase in security where Axa tries to tell people
Buy our new secure bike lock and oh by the way some of our previous locks seem to be vulnerable to manipulation

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2007-12-04 (#) 12 years ago
Tijd voor wat bewerkingen aan het Draadloos netwerk uitleg en installatie document: ad-hoc netwerken hebben een maximum snelheid van 11 Megabit/seconde wat ik opzocht naar aanleiding van een vraag in nl.comp.netwerken.draadloos.

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2007-12-03 (#) 12 years ago
Na wat aanpassingen aan de ups stats scripts komen er nu ook mooie jaaroverzichten uit: een jaar Eneco voltage en frequentie. Geen idee waar de universiteit electriciteit inkoopt maar in Utrecht is Eneco de netwerkbeheerder. In April is duidelijk te zien dat er toen aan de aansluiting wat veranderd is.

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2007-12-03 (#) 12 years ago
Met een regenachtige zondagmiddag audiobewerking is het Asterisk belspel nu zo ver dat er 2 mogelijke spellen gespeeld kunnen worden. Op de pagina over het Asterisk belspel heb ik ook gezet hoe het momenteel te proberen is.

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