<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:12pt"><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span class="tab"> </span><span>I sent Mike my MAX pictures last night, so they should be up alongside his other TRV photos shortly, and the TRV mechanics do look very similar. </span>I'll add some commentary on the Wiki when I have time.</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span class="tab">
</span><span>The interesting thing from an electronics perspective is that the processor on both the TRV and the thermostat modules is the SilLabs F930 (http://www.silabs.com/products/mcu/lowpower/Pages/C8051F92x-93x.aspx), which is designed for either 0.9-1.8V (single battery) or 1.8V-3.6V (double battery) operation and claims to have "</span>the industry’s lowest active mode current consumption, ... lowest
current consumption in sleep modes, ... [and] the industry’s
fastest wake-up and analog settling time". They're cheating a bit on the voltages, because it has an integrated boost regulator, but I think it might be worth investigating. The development tools section has examples for AES, a semi-software RTC and scanning a touch panel, but I've no idea what the IDE\cross-compilers are like. Does anyone have any experience with these units?<br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><br></div><div><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: Courier New,courier,monaco,monospace,sans-serif; font-size: 12pt;"> <div
style="font-family: times new roman,new york,times,serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight: bold;">From:</span></b> Stuart Poulton <stuart@poulton.org.uk><br> <b><span style="font-weight: bold;">To:</span></b> Closed list for developer discussions <opentrv-dev@lists.opentrv.org.uk> <br> <b><span style="font-weight: bold;">Sent:</span></b> Thursday, 21 March 2013, 7:12<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [OpenTRV-dev] The news !<br> </font> </div> <br>As promised, some pictures of my dismantled TRV.<br><br><a href="https://www.dropbox.com/s/cij7nmwmgb94yly/img_0369.jpg" target="_blank">https://www.dropbox.com/s/cij7nmwmgb94yly/img_0369.jpg</a><br><a href="https://www.dropbox.com/s/f564bsvumozcsl6/img_0370.jpg" target="_blank">https://www.dropbox.com/s/f564bsvumozcsl6/img_0370.jpg</a><br><a
href="https://www.dropbox.com/s/awd3kniljz7bvoj/img_0371.jpg" target="_blank">https://www.dropbox.com/s/awd3kniljz7bvoj/img_0371.jpg</a><br><a href="https://www.dropbox.com/s/tqy7wckd7o69om8/img_0372.jpg" target="_blank">https://www.dropbox.com/s/tqy7wckd7o69om8/img_0372.jpg</a><br><a href="https://www.dropbox.com/s/s31jglaq6xrsm9g/img_0373.jpg" target="_blank">https://www.dropbox.com/s/s31jglaq6xrsm9g/img_0373.jpg</a><br><a href="https://www.dropbox.com/s/o6z37l20cm0hz81/img_0374.jpg" target="_blank">https://www.dropbox.com/s/o6z37l20cm0hz81/img_0374.jpg</a><br><a href="https://www.dropbox.com/s/vdfsf7zhmozxlo6/img_0375.jpg" target="_blank">https://www.dropbox.com/s/vdfsf7zhmozxlo6/img_0375.jpg</a><br><br>The drive mechanism, is self contained, and has 2 wires direclty to the motor, and 3 wires connected to a small PCB, thic contains the optoreflector that is used to determine when the end of travel has been reached.<br><br>This drive mechanism does
indeed seem to be similar to several others (as you might expect). We've already seen at least one other example of the same mechanism in a different housing, I also understand that the max! unit is a similar derivative.<br><br> It shouldn't be too hard to get an atmega driving the mechanics. From there choose your desired RF platform.<br><br>Stuart<br>_______________________________________________<br>OpenTRV-dev mailing list<br><a ymailto="mailto:OpenTRV-dev@lists.opentrv.org.uk" href="mailto:OpenTRV-dev@lists.opentrv.org.uk">OpenTRV-dev@lists.opentrv.org.uk</a><br><a href="http://lists.opentrv.org.uk/listinfo/opentrv-dev" target="_blank">http://lists.opentrv.org.uk/listinfo/opentrv-dev</a><br><br><br> </div> </div> </blockquote></div> </div></body></html>