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1-Wire bus for temperature logging

Posted <2017-01-25 Wed 22:08> by Aaron S. Jackson.

I've been wanting to set up a bunch of temperature sensors around my house. Tonight I installed my first one. Here is the first splice into the bus:

And here is a close up of the temperature sensor module. Only this one should require a resistor, which is why I put it on some perfboard.

The sensor is a DS18B20+ three pin temperature sensor which operates on a 1wire bus. The resistor is a pull up resistor required for two-way signalling on a single wire. The following graph should update in real-time, unless I desert this project :)

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