[OpenTRV-dev] Anatomy of a TRV

[Damon Hart-Davis]

Sorry, I just got back from a large curry lunch and that was a bit garbled...

I would expect simply to include the FHT8V wireless module or the direct drive module to switch between these implementations.  (And have some different I/O hardware.)

Rgds

Damon


On 28 Mar 2013, at 13:57, Damon Hart-Davis wrote:

> Hi,
> 
> I would like us to produce an all in one unit as a direct simple replacement for a current mechanical TRV head.
> 
> I have no objection to us also doing a split unit as we effectively have now, indeed the current system meets that element.
> 
> It's simply a matter of how the 'TRVOpenPercentage' value in the node's internal model is conveyed to the valve itself: you load the FHT8V wireless mode or the direct motor model.
> 
> Rgds
> 
> Damon
> 
> 
> On 28 Mar 2013, at 12:03, Bo Herrmannsen wrote:
> 
>> 
>> Sorry for being so quiet, had to help a friend setup a new domain for his work…
>> 
>> 
>> one thing i think we need to make clear is that if we are going after a one-in-all unit.. i.e. controller and valve in same unit or if we are going for a valve and then a nice stylish box located else where in the room… 
>> 
>> 
>> like me i just got the valve from conrad… it only have a display thats show how much open it is.. no controls etc… if it does not get a command on a reg basis it will go for 30% open and beep once an hour… i will still consider that a dumb valve and not a TRV as such.
>> 
>> 
>> what i understand by try is the control unit that send commands to the valve. the 2 can either be a wireless valve with battery's and a box powered by either battery or a wall plug thing… or it could be a complete wired setup. (last thing would work for me since boiler and control will be in same closet.
>> 
>> 
>> as for detecting if room is in use…. i would go for 2 options… either ultrasound as it will detect just the tiny'ist movement.. or a push  button you press when you enter and again when you leave… that is if you use the room un a unscheduled event…. if you enter at approx the same times 3 days in a row the schedule could automatic be changed to take in account… if you then change behavior 2 quick press's could tell to change schedule… if doing the same 3 days in a row same deal….
>> 
>> 
>> 
>> /bo
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