[OpenTRV-dev] OpenTRV at local ham club

[Stuart Poulton]

Kevin,

Out of interest what's the reasoning behind having the AVR rather than 
getting the Pi to do it all directly ?

Cheers

Stuart

On 29/07/14 10:35, Kevin Wood wrote:
> 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
>>
>> --
>>
>>                   |||||
>>                 @(~Ô^Ô~)@
>> -------------oOo---U---oOo-------------
>> |                                     |
>> |  Bo Herrmannsen                     |
>> |                                     |
>> |                                     |
>> | "blessed are the "cracked",         |
>> |  for its they who let in the light" |
>> |                         Ooo         |
>> |_________________ooO____(   )________|
>>                   (   )    ) /
>>                    \ (    (_/
>>                     \_)
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