Today, I made a real milestone. Something that most of you in here think nothing of, but there is always a _first_ one and it is significant because that. To me. I put in production the first PCB I've drawn and had made (KiCAD, and Gerbers to JLCPCB).
What is it? A simple audio interface circuit, going from balanced to unbalanced and back again, so I can communicate between the sound system in the kitchen and my central switching matrix, in style.
Normal people would tuck a pair of Sonos or IKEA speakers (which are compatible with the Sonos, btw) on the wifi and be done with it, but I'm not normal. So, there. Besides, even if there's a web server in the matrix (that reads internal temperature in °C from the pcb sensor but converts and presents it as °F, which means that a back-calculation is always going to present integer °C degrees. Took some time to understand why the float from the scraper script always was "42,00 °C", and never 42,05..) that software won't call home.