The blog / excerpts
Welcome at Albrecht’s blog.
Posts
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4 switches on 2 lines
The German article.
Sorry for having no English version; my “electric English” is too .. .. Read more -
"All off" plus extra comfort with multiple Eltako light circuits
To have multiple independent electrical light circuits in large or adjacent rooms with many distributed switches for each circuit applying latching relays (+ pushbuttons) is a viable .. .. Read more
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New fixture for Bosch PMF 250 CES
Since years I use a Bosch multi function power tool PMF 250 CES. Recently the fixture for the vibration tool broke. Neither .. .. Read more
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Web hyphenation
As became clear from from the posts Jekyll Tricks and Dispose of Typo3 I am a strong proponent of static web sites generated with tools.
I’ve used static site generation for over twelve years with Frame4 based .. .. Read more
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Raspberry Pi IO with Java
Pi IO and process control with C
The natural language for a small Linux controller, like a Raspberry Pi, is C — especially when it comes to process control using Pi’s GPIO .. .. Read more
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Java's incompatible file lock
Java on the Pi
Working on a project dealing with process IO with Java on a Raspberry Pi I got Java applications that must compete for a lock .. .. Read more
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DCF77 decoding on Pi
In the post “Time synchronisation in local nets” I described the uses of DCF77 receivers to get the standard time from PTB’s .. .. Read more
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Jekyll tricks
As became clear from my closing remarks in Dispose of Typo3 I am a strong proponent of static web sites. They run faster than any CMS and do well on inexpensive servers featuring little more than an Apache .. .. Read more
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Sync time by NTP & DCF77
In a LAN one should have the same time on all machines – be them servers, workstations or small controllers, like Pis for real time control as described, e.g., in “Raspberry for remote services” (see .. .. Read more
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getopt_long accepts abbreviation
Today (13.10.2020) I discovered getopt_long accepting abbreviations of long options. If your
struct option(getopt.h) defines an option cons it will be triggered by--cons --con --co.. .. Read more -
Scann QR code with Pi
One of our realtime process control project with Raspberry Pi and C shall be enhanced with a QR and bar code scanner for access and booking. The ID cards in question would contain only numbers. In hindsight, regarding the scanner chosen, this is sheer luck. .. .. Read more
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A comprehensive German dictionary for Eclipse
If your HTML, XML and JavaDoc or Doxygen is to some extend German (and not just English) Eclipse’s spell checker .. .. Read more
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Out of Typo3
Typo3 is a powerful content management system (CMS) in wide spread use. It encompasses user administration, front end .. .. Read more
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Sampling stack usage on ATmegas with GCC software
Embedded systems using AVR ATmega controllers are usually (best) implemented in pure C with a (WIN-avr) GCC toolchain. .. .. Read more
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A serial bootloader for weAut_01, ArduinoMega and akin
This is an AVR ATmega development report on a serial bootloader for ATmega1284P, ATmega328P and ATmega2560 .. .. Read more
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Make Subversion keep mTime
Subversion (SVN) is a good versioning system and in many fields still the standard.
Nevertheless, it has one big deficiency: .. .. Read more -
A first character range filter with XSLT 1.0
This is a tip about implementing a first character range filter with pure XSLT 1.0. .. .. Read more
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Oracle schließt Kenai
Seit Ende 2008 bot SUN mit der Plattform Kenai Entwicklern von Java open source Projekten eine weltweit zugängliche Versionsverwaltung (mit .. .. Read more
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Frame4J a Java – Framework
This infrastructure project facilitates the building of- robust, comfortable, nationalisable and reliable applications and tools for
- stand-alone use as well as distributed web-applications.
The main intended area of use are development, administration and process .. .. Read more
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Windows verweigert .exe
Das Phänomen
Windows lässt den Admin ein Programm nicht starten.
Beim Starten einer .exe (mit Doppelklick) sagt Ihnen Windows 2003 enterprise .. .. Read more
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winmail.dat – Ärger
Das Phänomen
Ein mail-Anhang winmail.dat kommt ohne Wissen der Absender gelegentlich zustande, wenn Microsoft-Office-Dokumente (direkt oder indirekt) mit Microsoft-Outlook .. .. Read more
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Start with Wordpress
Until April 2019 this Blog was hosted at 1&1 and used WordPress there. Please find here some remarks on usage and experiences. .. .. Read more
Revision: 3 (03/14/2022) (first 10/06/2020) [de]