Today I learned about systemd-tmpfiles which can be configured with files in /etc/tmpfiles.d.
What Does “VCC” Stand For?
So today via What Does “VCC” Stand For? I learned that VCC stands for “voltage at the common collector”.
HC and LS logic families
So today I learned that “HC” (high speed CMOS) and “LS” (low power Schottky) are two different types of logic family.
Coupling and Decoupling
Today I read a little about Coupling and Decoupling. Apparently 0.1uF ceramic cap across VCC and Ground pins on a IC will do it.
Installing Zabbix from source
So I’ve had a bit of a go at installing Zabbix from source. I think I got there in the end, but I’m not sure how to auto-start the service… yet.
Public APIs
This via r/programming today: A collective list of free APIs for use in software and web development.
Favourite papers
So there’s a list of interesting papers over here: My favorite papers. I didn’t have time to read them all so I picked The Ubiquitous B-Tree and just read that.
SQL Query Stuck in Statistics State
I had this problem which is explained in greater depth over here.
HiLetGo USB Logic Analyzer
So I got myself a HiLetgo USB Logic Analyzer Device With EMI Ferrite Ring USB Cable 24MHz 8CH 24MHz 8 Channel UART IIC SPI Debug because for USD$12 + shipping how could I not? It came with a video from Amazon about how it works.
Multi-Function Tester
So I got myself this new bit of kit: M328 Diode Triode Capacitor Resistor Transistor ESR Meter Multi-Function Tester. When I opened the box there was no manual. But it turns out a manual is not required! This thing is so easy to use. Just wire up any old component and the device will tell you what it is!