bazcurtis, I am starting to look at #ESPAltherma and the hardware required. The hardware doesn’t seem too much of a problem.
This looks very handy as it comes in a weather proof case
https://docs.m5stack.com/en/core/tough
Or
https://thepihut.com/products/m5stickc-plus2-esp32-mini-iot-development-kit
The #HomeAssistant side should be ok, but I am very wary of how to make the cable. I have had some good advice in other forums. I am likely to try the M5Stick-Plus-2 option as I have had more advice on that one.
Of course still need a #HeatPump to use it 😀
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