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Temperature Sensors

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Leo edited this page Dec 13, 2017 · 1 revision

The temperature sensor used is the DS18B20. Datasheet

Main features:

  • ±0.5°C Accuracy from -10°C to +85°C
  • Unique 1-Wire® Interface Requires Only One Port Pin for Communication

Many sensors can be connected on a single pin, but it makes identification of each fermenter more difficult, since the Arduino has to know in advance which fermenter corresponds to which 64-bit ROM code (then the user has to have a way to map them in the menu). Hence, the temperature sensors will be connected one for each Arduino pin, and are easily identifiable by knowing on what pin they are connected to.

There is now support for the DHT22 as well. This can be configured on a sensor by sensor basis.

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