Dallas/Maxim usually likes their 1-Wire bus for that: https://en.wikipedia.org/wiki/1-Wire https://en.wikipedia.org/wiki/1-Wire The DS18B20 is, indeed, a 1-Wir

Dallas/Maxim usually likes their 1-Wire bus for that: https://en.wikipedia.org/wiki/1-Wire https://en.wikipedia.org/wiki/1-Wire The DS18B20 is, indeed, a 1-Wire device.