LoRA WAN stuff often not seen
13 mins
A short summary of LoRA WAN stuff that's often not seen by device and application manufacturers and developers. This blog post tries to give a short overview of network behavior and internals.
Recovering MySQL or MariaDB database via dump and restore
8 mins
This blog post summarizes the steps for disaster recovery on MariaDB or MySQL in case the database system doesn't start up any more or contains damaged table definitions which might even prevent one from dropping tablespaces or databases.
A simple home-built epoxy counter-top
12 mins
Short blog post about the casting of a simple epoxy countertop with embedded sink.
How stuff works - Line power distribution and protective measures in Europe (consumer side)
20 mins
Since it seems to be a huge mystery to many people this blog post tries to summarize some of the parts relevant to the consumer side of power grid systems.
Automatic plant watering and illumination (smallest version)
15 mins
In this blog article I'm describing a small automated plant watering solution that's used indoor to grow basil, capsicum and chili pepper indoor.
Z, ABCD, S and T parameters in two port networks
10 mins
A short summary about the different meaning and interpretation of impedance, ABCD, scattering and transfer parameters in simple (linear) two port networks.
Repairing corrupted RabbitMQ instance (VHost / experienced error, not a dets file)
2 mins
Mini post about an unusual error when using RabbitMQ - or mnesia in general. This is something that shouldn't happen and was also not expected to happen.
Runtime swapable and upgrade-able modules in ANSI C
16 mins
This article describes an trick that I'm using in some of my applications to allow one to exchange modules or plugins inside an application at application runtime as well as keeping old versions active as long as they're required.
Capacitance measurement with AVR (simple, fast)
6 mins
Mini article about the measurement of capacitance with AVRs with a minimum of external components (in it's most extreme form none external components exploiting the gate capacitance of the micro-controllers input)
Using Aspell to perform spellchecking (manually and inside the build pipeline)
3 mins
Mini article about the usage of the Aspell spell checker on FreeBSD on the command line and inside the automated build pipeline for static webpages
