1-Wire Thermometer on Remote RPi to monitor Freezer Temperature

Configuration
1

I have a HA server running. I have another RPi that I would like to use to send the temperature (measured using a 1-wire thermometer) of a freezer in another room. What is the easiest way to do this? Is there a lightweight app that can be installed on the remote RPi that would measure the 1-wire temp and then send to the temperature to my main HA server (possibly using MQTT)?

Another option would be to install HA on the remote RPi and send measurements from that RPi to my main HA server, but this sort of seems like overkill.

Thanks

2

Hi,
The easiest way to create a freezer themometer is an ESP8266 (e.g. a Wemos mini D1), DS18x20, and a USB power supply, running ESPhome.

There’s no need for the power of an RPi to operate a temp sensor.

My own project ran 3x DS81x20 with a small OLED display for check readings.

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The circuit to connect a DS18x20 is simple:

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ESPhome takes care of the rest - pretty simple.

The next hard part is getting the freezer door seal to seal around the sensor cable - condensation will form ice around the smallest crack.

If this helps, :heart: this post!