Reminders for me, you and your friends how to do stuff you need when dealing with microcontrollers like Picos, D1 minis and Raspberry family members.
Not everything is like shorts for computer science students – some other things only make sense in certain months. Like my webscrapers for the current water temperature of the outside pool or the warning system for below 0°C degress. To hide them in the HomeAssistant UI I created a helper that is filled with the…
Generally speaking this is how I learned to cache a JSON object in a Node-RED flow with the Change node by setting a flow based variable. Specifically this handles a problem with HomeAssistants light card backed by a MQTT light (defined in the configuration.yaml) only emitting partial values of the light setting when updating. New…
Be it HomeAssistant, mosqitto, NodeRed – I use docker to run them on a Raspberry and thanks to Portainer I can manage them with a a nice WebUI. It has been some time I set it up and as needed it again and had forgotten some of it I decided to make a short todo…
Plain and simple (or better in the case I forget it again). You can add the device when pulling and starting the HomeAssistant container. Make sure to adapt config path to yours.Add “–device/dev/NameOfDevice” If you don’t know the path of the USB device you can see a list of them with this command: I a…
FTP to your WordPress root directory and delete the “.maintenance” file. This is only the simple solution for the case you closed the browser tab you started the update in and now the banner “…in maintenance mode” appears instead of the website.This won’t repair your wordpress installation when something went wrong with it and that…
For a container class with a dictionary with config values (among other members) I wanted easy reading access as if it was a dict itself. For that you only have to implement the __getitem__ method. You can extend the provided dict functionality for your class if needed like the following: All but the update method…
As most of the time – there are multiple valid ways of doing it. Keeping the order I prefer easy and readable, if it is not crucial for performance to go another way.Create a new list and add only values to it that are not already included. You can do this with a simple list…
Yeah we all can loop, but can you any or all? Checking if condition matches for at least one element of an iterable (e.g. list, tuple, set) In Python you can write that nicer with the builtin method any(): But who doesn’t like a one-liner (that is understandable): Very similar is the case if you…
I wanted to know which topics are active on my MQTT server and if there were some skeletons in the closet I could get rid of. Many Iot devices, Node-RED flows and surely some unused topics or old retained topics lead to more or less MQTT being a chaotic museum of topics. This is just…
Pressing F5 does not refresh your view anymore but rewinds the current media?F11 does not run the selected JUnit test in Eclipse any more but activates Caps Lock? I have a Logitech K850 keyboard and I unintentionally turned on the function key lock (didn’t even know such a thing existed). Try the following: [Fn] +…
This short HowTo is about a problem I had with the Analyse Plugin for Notepad++. The Main window with the text and the one with the filters were still shown, but the result window disappeared and it wasn’t an instant fix to display it again. This is was worked for me:After a quick search I…
“I didn’t change anything and it (the SSH console) just kept on freezing”.This sound like something a callcenter agent would hear many times a day. Not that I ever worked shifts in the night and early on weekends and got paid really well posing as some who knows more than the computer screen in front…