Price Calculator Do you have used items, that you want to sell but don't know what price tag to put on? Here, you can calculate a suggested price.

An easy way to add Baha’í dates (Badi Calendar) into a Flutter app is with the open source dart library Badi date.

The open source library dart_suncalc calculates the sun position and can offer sun set and sun rise times for different locations and dates.

Authentication is increasingly becoming important in the internet and as long alternatives are not wide spread, secure passwords are very

Have you ever been in that situation? Someone asks you: "What time is it?". You start to answer: "It's 11, and 23 minutes", "...and 45 seconds, haha" you are made fun of for beeing precise. One of my favorit watch faces on my smart watch is the fuzzy clock, where the approximate time is given.

Smart bulbs and lights are a dream for hackers. There are light switches available for smart bulbs but why buy if you can DIY. My light switch should have two buttons. One to turn on and to make the lights brighter and one to turn off or darken the lights. If both buttons are pressed the lights should change colors. The new color should be a color from a predefined set of colors. Here, one way to go:

When I watch TV at nights, I often don’t pay attention on the volume. To avoid angry neighbours, I wrote a python script to turn the volume down on my smart TV. The most difficult part of this task was to find some kind information on the TV API because there is no public documentation.

This years Nobel prize in chemistry is awarded to Martin Karplus, Michael Levitt, and Arieh Warshel. Three of my fellow computational scientist who worked in the field of quantum mechanics and molecular mechanics simulation. Congratulations from my side. You really deserve that prize. The other day I was telling one of my students that the time for experimentalist is up. They had a good run but from now on we, the computational guys, are the new heros. There is a new sheriff in town.

We got a new Linux workstation in our lab and guess who had to set it up. I had to change the partitioning of the hard disk and while I was doing that I also updated the software. The software update made a reboot necessary and someone forgot to change the partition table before rebooting. That caused the system not to boot completely. In the file /etc/fstab the partitions where listed with the partition ID instead of the device name. Because the old partitions were deleted the system could not boot them. The system booted / in read only and didn’t allow to change that. So, there was no way to change fstab. It’s not important whose fault it was. We don’t want to point fingers on someone, especially not at me. Here is what I did to save the day.

The other day someone asked me what computer we have. What is an appropriate answer to that question? There is obviously the answer “a grey one!”. In the 80s you could answer a 386 PC, a Mac, an Amiga, and so on. But what do you say now?