pat on Nostr: You kids know ds18b20 1-wire temperature sensors? You should. My personal favorites ...

You kids know ds18b20 1-wire temperature sensors? You should. My personal favorites for ambient temperature control stuff. You can hook up as many as you want to only one microcontroller's pin, they make them in a number of form factors, including waterproof "probe" kind of thing, they're accurate enough, cheap and they work from -55°C to +125°C, and they even have programmable alarm kind of thing