Anyone have an idea what these are used in? I originally thought they might be used for 3D printing, but that doesn’t seem to be the case - except, perhaps for chamber temperature.
Indoor/outdoor temp sensors. Anything that needs a cheap temp sensor. Really handy since they just steal power from the bus (parasitic) so you don't need to run extra wires for power.
For me, I was using them as environmental sensors for an aquaponic setup (water more often when it’s hotter)
I put together some low effort esp8266 temperature/humidity probes. I used DHT chips cause they were cheaper/bundled with a board, but the tutorials said the DS chips were better.
I have several for homebrewing - monitoring mash, sparge, and fermentation temps.
I have a bunch for a related process. I don’t need them to be super accurate but they should be consistent and repeatable and the ones i have definitely are that.
I just bought a bunch of cheap indoor/outdoor weather sensors, I'd imagine they might apply.
May I ask what you bought? I've been looking for something like this but everything I've found has been pricey.
Ecowitt everything. They whitebox for Ambientweather and others, there's a whole rundown on wxforum: