[OpenTRV-dev] OpenTRV at local ham club

[Kevin Wood]

Hi Bo,

I'm actually working on something quite similar at the moment for a second
home that needs frost protection / monitoring remotely, in this case with
oil fired heating.

My plan is a raspberry pi attached to an AVR which controls the heating
system.

I'm thinking that the AVR can harvest temperature data from a couple of
OneWire sensors, run the heating and hot water schedules and control
relays that activate the heating system as required. It'll also have an
RFM on the board for later integration with OpenTRV and, if I can reverse
engineer it, the wireless oil level sensor on the oil tank.

R-Pi can host a web interface or, more likely in the first iteration,
provide a mechanism to at least SSH into it and check everything remotely.
Of course it could also do email notifications and SMS would be possible
either via an internet SMS gateway, or just hang a GSM module off it with
a cheap pay as you go SIM installed?

Does this premises have internet connectivity?

Kevin

> I was at local ham club last night at looked at their heating
>
> So far i "THINK" its all electrical heating as there is no district
> heating
> installed, makes things a bit more easy since heat not used will go back
> to
> the cylinder :-D
>
>
> Next bit, there is one big room with 4 rads, which means one box should
> control them all, the box will be central placed. Its mainly old timers so
> the less complicated the better, the rest of the rooms are one rad per
> room.
>
>
> Mostly @kevin but others might chip in, they have some kind of remote
> control where they can send a text to turn stuff on and they would like to
> be able to turn on the heat remotely, how could we get to that?
>
> the point is that when the house is locked heating should turn off
> completely or run at 5degree to prevent frost issues. then either by
> remote
> command or when house is unlocked it should go to warm mode, there would
> be
> no need to sense if its day or night or if people are in the room etc. the
> alarm will output a signal when its on/off
>
> any ideas?
>
> /bo
>
> --
>
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> |  Bo Herrmannsen                     |
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> | "blessed are the "cracked",         |
> |  for its they who let in the light" |
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