Thermistor is a semiconductor device made of materials whose resistance varies as a function of temperature. A thermistor can be used to compensate for temperature variation in other components of an ...

[Mechatronics Guy] built his own skillet temperature controller using a thermistor, a solid state relay, and an Arduino. He was inspired by [Ladyada’s] work which used a servo to adjust the ...

But by using the right analog reference voltage and adjusting the voltage divider he could get a 20x improvement in resolution, down to 0.05°C in the relevant temperature range.