Note that off-the-shelf NTC thermistors can be used as good enough reference thermometers if you keep an eye on the relevant parameters suitable for the respective application. NTC Thermistor & ...

On the other hand, if you find reading NTC thermistors to be the more interesting part, you’re in luck because [Davide] has more information about that along with a modified ESP8266 Arduino library.

Here is an Arduino experiment with a famed linear active thermistor chip MCP9700A from Microchip Technology Inc. The chip comprises an analog temperature sensor that converts temperature to analog ...