I run a small number of webservices at home behind a Traefik & Authelia setup. Authelia is used for authorization, as well as authentication through a connected LDAP server. In this setup, I find myself frequently using similar patterns again and again that took some time to figure out, so I document them here. Note that none of these are my invention, but I did find them hard to come by, so I want to summarize them here. Maybe they will help someone else, or myself, in future.

Recently, I visited Singapore and managed to pick up a Brother P-Touch PT-2430PC for a relatively cheap 40 SGD. I always wanted a label writer, but didn’t want to deal with pressing little buttons and working with a tiny screen. However, having to set it up, working through some Word-like software just for printing a label also didn’t really thrill me. I rather want to be able to quickly print something from my phone. Thus, I assembled a bit of open software and added some on my own to make this happen: Labeler, a web interface for Brother P-Touch.

As everyone knows, I am a huge fan of Linux for many applications. I have a number of Linux-based servers running, I have been using different Linux dervates for work and privately in virtual machines, but until recently, I did not have a desktop system with Linux. I have been missing that every once in a while. Some things, such as network administration and software development are just so much easier on Linux. I did not want to spend much money on an additional machine though, especially since my daily driver will remain on Windows, for family reasons. I thus settled on a netbook. Yes, one of these small screen devices popular in the early 2000s. I figured that it should offer sufficient performance for my use cases, while remaining portable and cheap. Of course, I went with an Arch Linux installation.

I am a big fan of the technology in the Kindle. I am not talking about ebooks and Amazon’s setup to sell them in proprietary formats, DRM, etc. But the E Ink display of the Kindle, the thinness of the device with high energy efficiency and long battery runtimes. Some time ago I thus used a Kindle Touch to build a Kindle Alarm Clock. There, I am using a HTML frontend, shown in the webbrowser of the Kindle with jailbreak and connecting to a backend webserver, implemented in Python and running on the Kindle, as well. When building it, it dawned on me that one could extract this setup into an app framework to make it easier for developers to develop apps for Kindles. This would allow great reusability of older devices, which are rather cheap and might otherwise end up in trash. A complete waste of an excellent technology. Thus, I set out to create kapps, a framework for apps on Kindle. The following article is a copy of the kapps README at the time of writing. There is also a wiki available with more information on its usage.

In my last post, I showed how I automate the LEDs mounted behind my computer screen to turn on and off automatically, when I log in or log out of the computer, respectively. There is a small caveat though: My computer is a laptop. Thus, it is possible that it is not in its docking station at the desk, but e.g., with me on the couch. In this case, I of course don’t want to turn on the LEDs. Thus, I need to detect the docking state of the laptop and notify Home Assistant of it. I then can trigger the lights based on the combined input of the log in/out and un-/docked state. This article will focus on a ThinkPad running Windows.

Since my desk is sitting in a rather dark corner of the living room and since I often write posts like this in the evenings, I thought a bit of monitor backlight would reduce eye strain a little. However, turning it on manually seems just too much of a hassle. Also, I use an RGB-LED strip and might like a different color than my wife. So clearly, some automation is urgently needed.