<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body ><div>I don't know about you, but the basic hardware at under £10 is a bargain. </div><div><br></div><div>The hardest part is going to be the fitting - doing every one of 30 odd radiators is going to make draining the system a good idea! Once fitted, software and outer hardware are a snap to fiddle with by comparison. </div><div><br></div><div>I can 3D print a new case if need be at small cost. I can swap the 'motherboard' or whatever quite easily. I can update firmware with no issue. But I really don't want to swap the valve hardware ever again. </div><div><br></div><div>Oh, while I think about it, any chance of a firmware update hardware switch of some form? Like press the button then you have 3 hours to push an update before it disables it forever - until you press the button again?</div><div><br></div><div>That would give you time enough and avoid getting hacked.</div><div><br></div><div>N</div><div><br></div><div style="font-size:75%">Sent from mobile</div><br><br><div>-------- Original message --------</div><div>From: Tim Small <tim@buttersideup.com> </div><div>Date:09/01/2015 19:42 (GMT+00:00) </div><div>To: "Open, non-developer list for interested parties" <opentrv-interest@lists.opentrv.org.uk> </div><div>Cc: </div><div>Subject: Re: [OpenTRV-interest] Frankenvalve brainstorming </div><div><br></div>On 09/01/15 17:13, Nigel wrote:<br>> The other option, to re map a different valve, would kind of cease<br>> this project, & would also mean being stuck with all their issues and<br>> design flaws. Plus of they add DRM or something it could turn out bad.<br>> Behind arrested for breaking the DMCA for your radiator valves would suck.<br><br>I'm really only considering this as a stop-gap until cheap OpenTRV<br>hardware is available, and any design changes from the manufacturer will<br>always cause problems when adapting 3rd party hardware (whether<br>replacing their electronics or not). No DMCA in the UK AFAIK (and the<br>EU laws only prohibit circumvention for the purpose of copyright violation).<br><br>They could lock down the firmware using signing etc. but that's going to<br>make their life more difficult...<br><br>Until you have cost-effective hardware available, you limit (seriously)<br>your developer community. Until you have a good sized developer<br>community it makes it difficult to make cost-effective hardware. <br>Chicken-egg problem.<br><br>There are other solutions to it of course, but it's worth considering IMO.<br><br>Tim.<br>_______________________________________________<br>OpenTRV-interest mailing list<br>OpenTRV-interest@lists.opentrv.org.uk<br>http://lists.opentrv.org.uk/listinfo/opentrv-interest<br><br></body>