<div dir="ltr">Hi Steven<div><br></div><div>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):</div>
<div><br></div><div><a href="http://www.conrad-electronic.co.uk/ce/en/product/559559/eQ-3-Heating-technology-White?ref=list" target="_blank">http://www.conrad-electronic.co.uk/ce/en/product/559559/eQ-3-Heating-technology-White?ref=list</a><br>
</div><div>(even cheaper in 3s)</div><div><br></div><div>also check out this:</div><div><a href="http://homelabs.org.uk/author/work-on-the-opentrv-project/">http://homelabs.org.uk/author/work-on-the-opentrv-project/</a><br>
</div><div><br></div><div>(b) - well, that would be an OpenTRV REV2 development board and a Conrad FHT8V valve then - aka a tinkerers kit.</div><div><br></div><div>If you let us know which one it if of these that you are after and then we can discuss options/ideas?</div>
<div><br></div><div>Regards, Mark</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On 31 May 2014 22:03, Steven Daglish <span dir="ltr"><<a href="mailto:s.c.daglish@gmail.com" target="_blank">s.c.daglish@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Alasdair,<br>
<br>
Thanks for the information. There's quite a bit to read there but there seems some good information to get started with.<br>
<br>
I hadn't seen any Q-3 Max products so thanks again for pointing me in the right direction.<br>
<br>
Steven<br>
<div><div class="h5"><br>
On 31 May 2014 11:03, Alasdair Macdonald <<a href="mailto:wewalkforonereason@gmail.com">wewalkforonereason@gmail.com</a>> wrote:<br>
><br>
> 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:<br>
><br>
> <a href="http://www.eq-3.de/" target="_blank">http://www.eq-3.de/</a><br>
> <a href="http://www.conrad-electronic.co.uk/ce/en/overview/0812043/MAX-Heating-Control-Systems" target="_blank">http://www.conrad-electronic.co.uk/ce/en/overview/0812043/MAX-Heating-Control-Systems</a><br>
> <a href="http://www.automatedhome.co.uk/hardware/eq-3-max-affordable-wireless-heating-control-with-your-smartphone-or-raspberry-pi.html" target="_blank">http://www.automatedhome.co.uk/hardware/eq-3-max-affordable-wireless-heating-control-with-your-smartphone-or-raspberry-pi.html</a><br>
><br>
> I believe that Damon mentioned in his FOSDEM talk the Q-3 products (although my memory may be faulty).<br>
><br>
> <a href="http://video.fosdem.org/2014/previews/fosdem/fosdem_2014/dv/AW1121/2014-02-02/13_02_31.ogv" target="_blank">http://video.fosdem.org/2014/previews/fosdem/fosdem_2014/dv/AW1121/2014-02-02/13_02_31.ogv</a><br>
> <a href="http://video.fosdem.org/2014/previews/fosdem/fosdem_2014/dv/AW1121/2014-02-02/13_27_09.ogv" target="_blank">http://video.fosdem.org/2014/previews/fosdem/fosdem_2014/dv/AW1121/2014-02-02/13_27_09.ogv</a><br>
> <a href="http://ftp.osuosl.org/pub/fosdem//2014/AW1121/Sunday/OpenTRV_resourceconstained_computing_less_is_more.webm" target="_blank">http://ftp.osuosl.org/pub/fosdem//2014/AW1121/Sunday/OpenTRV_resourceconstained_computing_less_is_more.webm</a><br>
><br>
> 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 :<br>
><br>
> <a href="http://blog.hekkers.net/tag/elv-max/" target="_blank">http://blog.hekkers.net/tag/elv-max/</a><br>
><br>
> which might be a good place for you to discover more.<br>
><br>
> HTH<br>
><br>
><br>
><br>
> On 29 May 2014 12:49, Steven Daglish <<a href="mailto:s.c.daglish@gmail.com">s.c.daglish@gmail.com</a>> wrote:<br>
>><br>
>> Hi all,<br>
>><br>
>> <br>
>><br>
>> I’ve been reading about the OpenTRV project for a bit now and I’m interested in seeing where I can help.<br>
>><br>
>> <br>
>><br>
>> 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).<br>
>><br>
>> <br>
>><br>
>> 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: <a href="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" target="_blank">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</a><br>
>><br>
>> <br>
>><br>
>> 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!<br>
>><br>
>> <br>
>><br>
>> Thanks in advance for any information.<br>
>><br>
>><br>
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