<div dir="ltr"><div><div><div><div><div>The basic principle is that it should be able to degrade gracefully:<br></div>- When you have a hub and it is working: full facility with complex settings, etc;<br></div>- When you don't have a hub, your hub is not working or the TRV can't contact it, ensure that the TRV still works and has basic controls.<br>
<br></div>I think the TRV should be able to operate fully on its own by remembering all settings sent by the hub (if installed) and by having simple controls for the most common settings. This way you only need a set of TRV but if you have the hub, you can access more advanced functionality and have funky graphs.<br>
<br></div><div>I would also suggest that the hub should be a data storage and control centre with a simple REST + MQTT interface and not require a display. This way, you can integrate it with other devices, attach any number of displays (e.g. you could have your TV or your mobile phone act as a display). This is actually one of my bugbears with the way smart meters have been specified in the UK: the display also acts as the data storage unit and you have no way to access the data through other devices.<br>
</div><div><br></div>My £0.02<br><br></div>Bruno<br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On 12 April 2014 10:07, Bo Herrmannsen <span dir="ltr"><<a href="mailto:bo.herrmannsen@gmail.com" target="_blank">bo.herrmannsen@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div dir="ltr">
<div style="font-size:12pt;font-family:'Calibri'">
<div>hehe... nor will the charge station for the hearing aid .-D</div>
<div> </div>
<div>but damon got a point... it does not help we make this to “advanced” for
old people, everyone has to be able to use it, for some a small learning curve
<img style="BORDER-TOP-STYLE:none;BORDER-BOTTOM-STYLE:none;BORDER-RIGHT-STYLE:none;BORDER-LEFT-STYLE:none" alt="Smiley med åben mund" src="cid:6126FD28D2864159AAE306E282DDDB51@Bo"></div>
<div> </div>
<div> </div>
<div style="font-style:normal;font-size:small;display:inline;font-family:"Calibri";text-decoration:none;font-weight:normal">
<div style="FONT:10pt tahoma">
<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="stuart@poulton.org.uk" href="mailto:stuart@poulton.org.uk" target="_blank">Stuart Poulton</a> </div>
<div><b>Sent:</b> Saturday, April 12, 2014 11:02 AM</div><div><div class="h5">
<div><b>To:</b> <a title="opentrv-dev@lists.opentrv.org.uk" href="mailto:opentrv-dev@lists.opentrv.org.uk" target="_blank">Closed list for developer
discussions</a> </div>
<div><b>Subject:</b> Re: [OpenTRV-dev] Possible basis of OpenTRV
hub?</div></div></div></div></div>
<div> </div></div>
<div style="font-style:normal;font-size:small;display:inline;font-family:"Calibri";text-decoration:none;font-weight:normal"><div><div class="h5">
<p dir="ltr">Of course if you've lost power the hearing won't be working
either.</p>
<div class="gmail_quote">On 12 Apr 2014 09:58, "Bo Herrmannsen" <<a href="mailto:bo.herrmannsen@gmail.com" target="_blank">bo.herrmannsen@gmail.com</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">oh
it will work if the internet connection goes down :-D<br><br>the central hub
will be inside the house, but of course that one can loose power too and hence
not issue commands :-P<br><br><br><br>-----Oprindelig meddelelse----- From:
Damon Hart-Davis<br>Sent: Saturday, April 12, 2014 10:54 AM<br>To: Closed list
for developer discussions<br>Subject: Re: [OpenTRV-dev] Possible basis of
OpenTRV hub?<br><br>Hi,<br><br>Dinosaurs or not, I don’t want anyone’s house
freezing just because their Internet connection goes down.<br><br>I’m playing
with an e-paper display at the moment (though not giving it much
time)!<br><br>Rgds<br><br>Damon<br><br><br>On 11 Apr 2014, at 20:24, Bo
Herrmannsen <<a href="mailto:bo.herrmannsen@gmail.com" target="_blank">bo.herrmannsen@gmail.com</a>> wrote:<br><br>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">oh
yes... forgot that the dino's still walk among us :-D<br><br>but you are
right, the thing with no UI coudl be seen as an option... or we could make
it more simple to only allow a smaller set of features to be used on the
box<br><br>but for the central hub... could mabe add an 7" touch screen to
it?<br><br><br><br>-----Oprindelig meddelelse----- From: Damon
Hart-Davis<br>Sent: Friday, April 11, 2014 9:18 PM<br>To: Closed list for
developer discussions<br>Subject: Re: [OpenTRV-dev] Possible basis of
OpenTRV hub?<br><br><br>On 11 Apr 2014, at 11:07, Bo Herrmannsen <<a href="mailto:bo.herrmannsen@gmail.com" target="_blank">bo.herrmannsen@gmail.com</a>> wrote:<br><br>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">i
imagine if anyone has the time and success with this we could almost drop
the UI at the box and concentrate on a web ui instead
:-D<br></blockquote><br>I always want to keep a simple UI on the boxes if
possible, so that you don’t *need* a smartphone or an Internet connection to
turn the radiator on and
off!<br><br>Rgds<br><br>Damon<br>______________________________<u></u>_________________<br>OpenTRV-dev
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