Roger.
> I have a friend who has an impressively automated house and you might
> want to aim at something a bit more sophisticated.
>
> First of all the user interface. He has an old smartphone with a 3d
> printed holder which makes a smart control mounted on the wall. He has a
> nice user interface which his wife his pleased with. He also stores his
> data so he can see how the system is performing.
>
> You might want to control each individual radiator and zone the house
> with an individual temperature sensor and power relay. The bathroom
> would be the obvious room to zone.
I've actually got not choice, the rads are hardwired to the mains, some of
them have a pilot wire, some don't, and I don't think they are on separate
circuits, so I'll need to control them individually anyway! So unless I re-
wire the house I'm committed to one controller per rad - giving total of 4
rads in 3 zones.
I could almost tolerate the current design if there was a timer on them, but
they are all half baked, and even have exposed wire junctions!
> I also had this fantasy a few years ago and with the help of a lot of
> research manged to hack a windows programme that could monitor and
> control my Vailliant boiler and wrote a programme for the Raspberry PI.
>
> The idea was to make it smart so that I would record inside and outside
> temperatures and over a period of time learn about the heating
> charactersitics so I could set the time when I wanted the temperature
> and not just switch on the system according to the time. So it would
> calculate the time required based on outside temperatures and switch on
> accordingly. Also if the sun was up and temperature was rising rapidly
> it would switch off prematurely.
>
> Ultimately it would be combined with weather data for maximum efficiency.
>
> The project stalled when I discovered that I and my wife worked at home
> and we have the heating on all the time. Am hoping to get back to
> finishing it soon before climate change renders the project useless.
>
> Overt the years I have installed cat 5 cabling in the house with a view
> to monitoring each room. I have also been collecting the white plastic
> containers that dental floss come in to house the temp sensors for
> several years.
>
> I hope that the move to France is successful and your heating
> requirements are probably reduced.
>
> Best Regards
>
> Roger
>
> On 18/02/2019 10:37, Adam John Trickett via Hampshire wrote:
> > Bonjour !
> >
> > I have finally found a use for a Raspberry Pi...! Since moving to France
> > we
> > have ended up with a house with stupid electrically heated oil filled
> > radiators. They are not properly controlled and quite inefficient, at best
> > you can control them on a thermostat but there is no clock...
> >
> > It seems obvious that all I need is a thermometer, a mains relay a
> > Raspberry Pi and some some software to create a time controlled
> > thermostat that I can SSH into...!
> >
> > So I think I need
> > a box
> > a AC/DC transformer for the Pi
> > a mains relay
> > a digital thermometer
> > an override switch
> > something to mount the relay and transformer on
> > WiFi Pi or WiFi module for Pi depending on model
> >
> > I think this is technically easy to do, but the biggest constraint seems
> > to be that the overall box needs to be small and "wife friendly"...
--
Adam Trickett
Saint-Malo, Bretagne, France
I've found that people who are great at something are
not so much convinced of their own greatness as
mystified at why everyone else seems so incompetent.
-- Paul Graham, "Great Hackers" 2004
--
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