Hallo,

I'm using a bunch of DS18B20  with a raspberry pi (connected through GPIO).
You can put them in serial up to 255 sensors.

Here are some schematics:

https://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/hardware
https://forum.farmbot.org/t/interfacing-ds18b20-temperature-sensor-with-raspberry-pi/1774