Author Archives: Fabian Affolter

pysysbot 0.1

Two years back I wrote a XMPP/Jabber bot named pysysbot. It’s based on the Python Jabberbot framework and just gives you system details as answers. In the past days I started to rewrite some parts especially the handling of the … Continue reading

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mqtt-panel

Inspired by mqtt-svg-dash which was created by Jan-Piet Mens I developed my own simple web interface. I think that the idea with the svg is great if you are working with free form elements or complex layouts like a house. … Continue reading

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Temperature measurement with Dallas DS18X20

For the measurement of temperatures in a closed system or of the environment, a lot of sensors can be used with the Arduino. For starters the Dallas DS18X20 sensor is a good choice. Those devices are cheap, easy-to-use, and adding … Continue reading

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Standard wiring for DS18X20

To connect a DS18X20 to the Arduino a 4.7 kOhm resistor is needed. The Fritzing schema below shows the wiring of sensor on a breadboard.

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Parasite power mode wiring for DS18X20

The wiring for the parasite power mode of the DS18B20 differs a little bit from the standard wiring. The main distinction is that only two connections are needed (the third legs can have a connection to GROUND too). The Fritzing … Continue reading

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Gnome Shell extensions Remove Bluetooth icon

The “Remove Bluetooth icon” and the “Remove Volume icon” Gnome Shell extensions will soon be available at the Gnome Shell Extensions Website. Currently the extensions are under review. After the review the users can choose if they want to install … Continue reading

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Gnome Shell extension Remove Bluetooth icon

The API changes of the Gnome Shell > 3.0.1 required an update of the extensions. The latest release of the Gnome Shell Bluetooth icon remover extension works with the current version of Gnome Shell. Website: http://www.affolter-engineering.ch/index.php?page=remove-bluetooth-icon Source: remove-bluetooth-icon-0.2.tar.bz2 SHA1: remove-bluetooth-icon-0.2.sha1sum … Continue reading

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Gnome Shell extension Remove Volume icon

The API changes of the Gnome Shell > 3.0.1 required an update of the extensions. The latest release of the Gnome Shell Volume icon remover extension works with the current version of Gnome Shell. Website: http://www.affolter-engineering.ch/index.php?page=remove-volume-icon Source: remove-volume-icon-0.3.tar.bz2 SHA1: remove-volume-icon-0.3.sha1sum … Continue reading

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alpine-iso Config Builder

To create an Alpine ISO image with a specific set of packages only a plaintext list of packages and a configuration file is needed. Sometimes you wish to have some additional documentation or description about the included packages available and … Continue reading

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Gnome Shell extension Remove Volume icon

This Gnome shell extension removes the bluetooth icon from the panel. Dowload the tarball to $HOME/.local/share/gnome-shell/extensions and unpack it. A new directory called remove-volume-icon@affolter-engineering.ch should be created. If you prefer to use the latest source clone the git repository and … Continue reading

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