E-Books

Calibre splash screen

As more and more e-books become available, it is time to set up an ebook library. The first open source alternative found, Calibre, turns out to be very useful and also does it connect to my (Kobo Glo) e-reader.

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Urdu flashcards

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Flashcards for the Urdu-Nasta’līq script, made from the Wikipedia alphabet chart. As common Urdu is quite the same as Hindi, it is a small step to learn to read it as well.

Best cut and paste the glyphs on strong (300+ gsm) paper cards yourself, no fancy digital stuff, so you can take your time, as needed for learning anyway.

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Digital Storage USB oscilloscope on iMac


OpenHantek GUI

OpenHantek GUI Qwt

Switched from HantekDSO to OpenHantek for the Voltcraft model 2090 DSO.

The OpenHantek GUI adds a bit more flexibility, e.g. export to PDF, PS, JPG or CSV data.

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Short Duets

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A year after my introduction into music with the descant recorder, I now mastered the treble recorder well enough to play the accompaniment part of Henry Purcell’s Short Duets. The booklet contains brilliant pieces for the late beginner flute player.

Here is the electronic version (PDF 600KB) I created with Lilypond.

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Der Mann ohne Eigenschaften

Der Mann ohne Eigenschaften

Eenvoudigweg omdat ie op mijn lijstje van te lezen boeken stond en nog onwetend van een onvoltooid werk begon ik aan Der Mann ohne Eigenschaften. Inmiddels gestopt bij de kleine lettertjes, de Studienblätter und Notizen, omdat dat in plaats van leesplezier teveel op een literaire studie ging lijken. Iets om later nog eens op te pakken.

Dit is mijn Schwere Wörter (PDF 88 KB) lijstje, voor wie het gebruiken wil.

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Ziggo facturen download script

Ziggo factuur

Vooralsnog biedt Ziggo geen batchfunctie om al je facturen in één keer op te halen. Omdat ik die dingen zo ongeveer eens per halfjaar ophaal, hiervoor een web-scrape script gemaakt.
De Ziggo site, gebouwd met Backbase, leunt zwaar op JavaScript gegenereerde zaken. Daarom met gebruik van QtWebKit, PyQt4 en de Python webscraping library een scriptje gemaakt waarmee de gerenderde pagina’s ge’scraped’ kunnen worden.

De PDF facturen worden bewaard in dezelfde folder als het script.

Python script (en de webscraping library van 4 januari 2013) ziggo_facturen.zip (700KB).

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An open source alternative to Matlab


Sine 3D

Another find of the FEM study is Octave, a great Math package.

Octave is a reimplementation of part of Matlab developed by Professor John Eaton at the University of Texas, Austin, and later at the University of Wisconsin, Madison.

If you are looking for an Open source alternative to Matlab you should give Octave a try.

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A textscanning workflow

For a project that involved dozens of print pages to be saved as textdocuments, I used the Tesseract OCR program together with the Netpbm library. Here’s what the three step workflow looks like.

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Wake on LAN

To enable wake-on-LAN over the Internet, the open hardware platform Arduino is used.

Not all routers support wake-on-LAN from the Internet to LAN. This depends on whether you can configure the ARP cache and send or forward a WOL broadcast package.

To support WOL, in this case on an Apple TimeCapsule, an Arduino Ethernet Pro board is used. Thus having a low-power device (Arduino) listening for WOL.

Both the Arduino board and machine to wake-up are connected via Ethernet to the TimeCapsule. The Arduino is powered using the TimeCapsule USB port.

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FEM O.C. Zienkiewicz et al.


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The Finite Element Method, its basis & fundamentals, O.C. Zienkiewicz, R.L. Taylor, J.Z. Zhu, 6th edition ISBN 0-7506-6320-0.

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