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 covers a very configurable and more complex variant of measuring brightness and turning on LEDs.If you are looking for a more basic variant: It all began with a LDR and curiosity. The result is a night light for a ESP8266 like D1 Mini or Raspberry Pi Pico (W) which compensates darkness with many configurable…
Externalizing the configuration is a good idea. This makes the reusability of your program much higher and a user doesn’t have (and shouldn’t have to) change values in the code.This separation tends to show where your code is perhaps too tightly coupled and constants are referenced directly as they are directly available in the script…
This is a continuation of Is it dark yet ? – Measuring brightness with LDR on Pi Pico (W) and ESP8266 (D1 Mini & NodeMCU v3) in MicroPython, but concentrating on a fast and clean code rather than how to use a LDR with MicroControllers in principle. What you need: D1 mini or a similar…
Materials you need for this: LDRs (I am using 5528), breadboard, jumper wires, resistor (I used 56k) and a 5V power supply. The MicroPython code has been written for and tested on Pi Pico, Pi Pico W, D1 Mini and NodeMCU v3 ESP8266 .I bought it at berrybase.de and az-delivery.de (not referral links). The microcontrollers…
Great microcontroller, bought it at az-delivery.de (no ref link). The onboard LED pin is 2 (GPIO 4).
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…
A follow up to Software tests – some basic JUnit testing in the area of RxJava. Not much text right now, just the announcement, the code below and the link to my github repo. Includes a build.gradle with all the needed dependencies.(There are already some other test concerning ConnectableObservables subscriptions and time of emit.) Short…
The little easter egg of “import this” in Python is well known – it shows Zen of Python. Nice guideline of how to keep your code clean. The Zen of Python, by Tim Peters Beautiful is better than ugly.Explicit is better than implicit.Simple is better than complex.Complex is better than complicated.Flat is better than nested.Sparse…
“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…