Internet Of Things / IoT / Connected Home / Smart Houses

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jellybaby in reply to @Fox
So I'm thinking about using Hue motion sensors to check someone is actually in a room

I'm sceptical about that approach. If you have a cold and draughty house like me then the time to heat a room is too long to usefully do something when someone starts using it. If you have a well insulated house then heating the room if someone is likely to use it isn't a big problem.

I basically want three modes:
1. Not in the house - heating reduced to very low level (eg 14)
2. Family in (weekends, after school) - all rooms heated to comfortable level (eg 20)
3. Working from home - just heat my study, rest of the house at low level (eg 16)

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𝔒𝕨𝖑𝘡 in reply to @jellybaby

Would this require the main central heating thermostat to be in your study? Trying to get my head around how I can achieve the same thing.

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jellybaby in reply to @𝔒𝕨𝖑𝘡

If I have a smart TRV on every rad (bar one) then I don't need a main thermostat. If any TRV is calling for heat then turn the boiler on and provide some.

I don't know if this is how off the shelf stuff works but in theory I could build my own with some ZigBee TRVs, a WiFI relay and a Raspberry Pi.

I might do some extra detail like bedrooms are warm first thing in the morning on a school day to encourage teenagers out of bed but then cooler until they get home and go and do some homework (yeah right, just heat the telly watching room).

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