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A comment on Amazon, Apple, Google, and the Zigbee Alliance to develop connectivity standard. Parent comment

Re:Amazon, Apple, Google, and the Zigbee Alliance to develop... by aequitas on Wednesday December 18, 2019 @09:56AM (#21825420)
If your device supports opentherm (which is not as open as you might think, btw) you might want to look into OTGW [0]. It probably works with Nest to if the Nest allows to run without internet at all.

[0] http://otgw.tclcode.com/

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Re:Amazon, Apple, Google, and the Zigbee Alliance to develop... by teekert on Wednesday December 18, 2019 @10:05AM (#21825528)
My central heater is a simple on/off model. Nest will work offline with it but afaik you can't write target temperatures to it then.
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Re:Amazon, Apple, Google, and the Zigbee Alliance to develop... by aequitas on Wednesday December 18, 2019 @10:20AM (#21825698)
To bad, my old heater had opentherm, with the OTGW I could intercept the packets between the heater and thermostat, change values (eg: date/time), issue commands (set room temperature) and add missing functionality (outside temperature for heating curve), it was ideal in every way. But I moved and my current heater has a proprietary protocol over rs485 so its a no-go for the OTGW.
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Re:Amazon, Apple, Google, and the Zigbee Alliance to develop... by teekert on Wednesday December 18, 2019 @11:22AM (#21826411)
In the EU there are no systems without opentherm by law luckily.

That does mean some systems are not available at all, so "luckily".

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