[OpenTRV-interest] Where to start?

[Mark Hill]

Hi Steven

Not sure if you are after (a) just a TRV so you can hack it about (hardware
wise) or (b) a TRV you can control remotely, concentrating on the central
controller software. For (a):

http://www.conrad-electronic.co.uk/ce/en/product/559559/eQ-3-Heating-technology-White?ref=list
(even cheaper in 3s)

also check out this:
http://homelabs.org.uk/author/work-on-the-opentrv-project/

(b) - well, that would be an OpenTRV REV2 development board and a Conrad
FHT8V valve then - aka a tinkerers kit.

If you let us know which one it if of these that you are after and then we
can discuss options/ideas?

Regards, Mark




On 31 May 2014 22:03, Steven Daglish <EMAIL ADDRESS HIDDEN> wrote:

> Hi Alasdair,
>
> Thanks for the information. There's quite a bit to read there but there
> seems some good information to get started with.
>
> I hadn't seen any Q-3 Max products so thanks again for pointing me in the
> right direction.
>
> Steven
>
> On 31 May 2014 11:03, Alasdair Macdonald <EMAIL ADDRESS HIDDEN>
> wrote:
> >
> > I don't know if your research led you to the Q-3 Max! products; your
> links shows something that AFAICT is either a clone or badged version of
> the Q3-Max! TRV. See:
> >
> > http://www.eq-3.de/
> >
> http://www.conrad-electronic.co.uk/ce/en/overview/0812043/MAX-Heating-Control-Systems
> >
> http://www.automatedhome.co.uk/hardware/eq-3-max-affordable-wireless-heating-control-with-your-smartphone-or-raspberry-pi.html
> >
> > I believe that Damon mentioned in his FOSDEM talk the Q-3 products
> (although my memory may be faulty).
> >
> >
> http://video.fosdem.org/2014/previews/fosdem/fosdem_2014/dv/AW1121/2014-02-02/13_02_31.ogv
> >
> http://video.fosdem.org/2014/previews/fosdem/fosdem_2014/dv/AW1121/2014-02-02/13_27_09.ogv
> >
> http://ftp.osuosl.org/pub/fosdem//2014/AW1121/Sunday/OpenTRV_resourceconstained_computing_less_is_more.webm
> >
> > My recollection is that the Q-3 Max! protocol may have been mentioned.
> That's probably the first thing you'd want to learn about. The
> automatedhome article links to :
> >
> > http://blog.hekkers.net/tag/elv-max/
> >
> > which might be a good place for you to discover more.
> >
> > HTH
> >
> >
> >
> > On 29 May 2014 12:49, Steven Daglish <EMAIL ADDRESS HIDDEN> wrote:
> >>
> >> Hi all,
> >>
> >>
> >>
> >> I’ve been reading about the OpenTRV project for a bit now and I’m
> interested in seeing where I can help.
> >>
> >>
> >>
> >> I’ve been wanting to do something similar myself for a while, so I’ve
> started developing my AVR programming skills. My background is in
> electronic engineering with more emphasis on control systems (I’ve done
> quite a bit of work no “cheap” hospital incubators, so have some experience
> in designing controls for heating systems).
> >>
> >>
> >>
> >> However, before potentially getting involved in this project, I’d like
> to get hold of a TRV myself and start doing some “tinkering” so I can get a
> greater understanding of how they work and how to start designing a
> centralised control system. Therefore, I’d be grateful if anyone could
> point me towards a cheap eTRV device (I’m based in the UK) that I could
> take apart without horrying too much about wasting money if I brake it. I
> found the following system which I’m looking at purchasing, but not sure if
> anyone has any experience with it:
> http://www2.westfalia.net/shops/around_the_home/heating_and_cooling/radiators_and_accessories/radiator_thermostats/637720-electronic_radiator_thermostat.htm?gclid=CjgKEAjwtZucBRD77aiiq_v4xnASJABkAg8JWBXgSX6S_EZiV_g24E7HcHxwxTQxhuIW349WnKTI-_D_BwE&art_nr=108555
> >>
> >>
> >>
> >> Really, the way I see it at the moment, I only really need a motorised
> TRV without any real controls, as I’ll be developing an AVR system to
> control the temperature, but I just can’t find one!
> >>
> >>
> >>
> >> Thanks in advance for any information.
> >>
> >>
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