[OpenTRV-dev] Possible basis of OpenTRV hub?

[Damon Hart-Davis]

Hi,

Oooooo, it would be good to have a basic spec so that OpenTRV could interop with OEM/Jeelib stuff.  From frequency and signalling type (eg FM, OOK) up to basic frame structure.

I think that Mike make have made the RFM23B and/or 69 successor talk to RFM12, so we may have a route to make things work that way (given that the 23s and 12s are both end-of-life I think).

Rgds

Damon


On 7 Apr 2014, at 16:00, Kevin Wood <EMAIL ADDRESS HIDDEN> wrote:

> I have actually recently been analysing the OpenEnergy RFM12 signalling,
> as I am working on a little project in which I hope to interoperate with
> their nodes and CMS (although I'm leaning more and more towards rolling
> something of my own!). The code is a bit cryptic in places and there's no
> spec on the signalling anywhere I can find. Bits of the protocol are
> hidden in the Jeelib library and bits in the OpenEnergy code and it's all
> prone to problems if you have mismatched versions of the various source
> files and libraries.
> 
> Anyway, I have got to the bottom of it, should it be required.
> 
> I am looking to provide a control system for the central heating in a
> holiday home that is often unoccupied, so I'm hoping to build a central
> node to drive the existing heating and hot water controls and use EmonTx
> nodes to give me some temperature inputs.
> 
> The central node will have a raspberry Pi providing a web interface to
> control it remotely and feed logging data to EmonCMS or similar.
> 
> Once the basics are working I'd like to add monitoring of the burglar
> alarm to provide intruder alerts and also perhaps occupancy detection,
> heating oil level sensing and/or boiler burner operating time.
> 
> Best Regards
> 
> Kevin
> 
>> Interoperating with the RFM12 stuff would be good, but is non-trivial, if
>> that’s what you mean.  There’s basically no spec as to houw their stuff
>> actually works as far as I know.
>> 
>> Rgds
>> 
>> Damon
>> 
>> 
>> On 7 Apr 2014, at 13:42, Bo Herrmannsen <EMAIL ADDRESS HIDDEN> wrote:
>> 
>>> hmm
>>> 
>>> should be possible...
>>> 
>>> but would it not make sense to contact OpenEnergy and mix the too
>>> things?
>>> 
>>> i imagine it would only need the radio module added to their radio
>>> then you have both monitoring and control on the same device
>>> 
>>> total bonkers? not if you ask me....
>>> 
>>> 
>>> -----Oprindelig meddelelse----- From: Damon Hart-Davis Sent: Monday,
>>> April 07, 2014 2:27 PM To: Closed list for developer discussions
>>> Subject: [OpenTRV-dev] Possible basis of OpenTRV hub?
>>> http://www.raspberrypi.org/raspberry-pi-compute-module-new-product/
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