[OpenTRV-dev] Paul's case

Tue Apr 2 15:37:36 BST 2013

Hi Damon,

In an ideal world each TRV would be an XAP endpoint so that it can report
its status, Temp, Target and Valve status.

However that would require some cleverness in the TRV, so I'm thinking that
would be in the Rpi. The XAP Floorplan windows app allows me to do if/then
things and also timers and buttons.

So i think a Rpi as the central point which reads temps from room and can
control a TRV. I can the code up a XAP interface. and either put the
schedule in the Rpi or in XAP Floorplan.



Paul Smith

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On 2 April 2013 15:22, Damon Hart-Davis <EMAIL ADDRESS HIDDEN> wrote:

> Hi,
> Where would that target (and indeed the schedule) be maintained, with the
> valve or centrally?  I'm being thick, sorry.
> On 2 Apr 2013, at 15:13, Paul Smith wrote:
> > reporting back its target and current state
> The current OpenTRV implementation such as it is reports in effect its
> current state in terms of how far the valve is open: if shut then the room
> is at or above target.  The target is not currently reported as there is no
> place in the valve-command packets for it, but it could probably be tacked
> on the end without doing any harm and the RPi could see that.
> I think we may need to draw up a block diagram to understand what
> functionality would be where for your ideal system, probably for one room
> plus your central RPi.
> Then we can see how close the current system is to doing what you want,
> and who easy it would be to bend to fit!
> Rgds
> Damon
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> OpenTRV-dev mailing list
> http://lists.opentrv.org.uk/listinfo/opentrv-dev
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