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
What (in my opinion) one can learn from Erlang/OTP for other programming languages
12 mins
Since I'm a huge fan of the Erlang programming language and the OTP toolkit but normally aren't working with projects where Erlang is suited or in case some existing code is using already other languages and so I'm not capable of using Erlang I tried to summarize some of the things that I think one can learn from programming in Erlang/OTP even when using other programming languages. Of course this stuff is not enforced by the runtime environments and it's harder to achieve on other platforms but the approaches work nevertheless.
How to use the Webauthn API on a webpage to implement 2FA using YubiKey or TPM
19 mins
A dive into programming using the WebAuthn API in JavaScript and the requirements on the server side to perform 2FA using HSM's like the YubiKey, platform embedded TPMs or similar solutions supported by webauthn.
3D printing NACA airfoil profiles
4 mins
Mini Blog-Post that describes modeling 4 digit NACA airfoil profiles in OpenJSCAD
Why pure JavaScript web apps are neither the future nor a good idea
27 mins
This is an opinion article on the future of web development. Currently there is a trend about building more and more logic into the client - even for simple tasks. That trend has been there previously and it has been a bad idea back then. This article tried to present a few arguments why I don't think that this is or should be the future of the web.
