I have a temperature probe I bought a while ago for use with a fridge controller (for beer brewing). I never ended up using it, as the controller came with a different more suitable sensor.
I was thinking about trying to see if i could get it working with an arduino and maybe use it for something. I’ve managed to hook it up with a voltage divider (I’m pretty new to electronics, is that the right term to use here?) and i’m able to get an analog reading which appears to rise and fall when the probe is heated and cooled, so I assume its working.
The probe has no brand/model markings whatsoever anywhere on it, so I cannot look up a datasheet to see how to convert it to a temperature.
So I was thinking, it is possible to take a reading at 2 known temperatures (ie, 0 degrees C and 100C) and then work it out based on the difference? Do temperature sensors normally have linear readings based on temperature?