The DS18B20 is a digital temperature sensor from Dallas Semiconductors, which is now part of Maxim (https://datasheets.maximintegrated.com/en/ds/DS18B20.pdf). The ...

An Arduino measures the temperature of the room via a DS18B20 temperature sensor which then has the servo turn the control knob to the appropriate position, on or off. The Arduino sends ...

You might think that there could be no form factor that has not as yet had an Arduino fitted in to ... of an AA cell for a couple of DS18B20 temperature sensors and an indicator LED.