<div dir="ltr">Haven't fully investigated them yet, but they'd mainly need to be aimed to ensure they had a reasonable field of view rather than to nominate a sensitive spot. Unlike regular PIRs they don't only respond to change (though it remains to be seen how sensitive they are).<br>
<br><br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Sep 30, 2013 at 1:40 PM, 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>do the cams not have to be aimed then? ie at the most likely spot?</div>
<div> </div>
<div>but then cieling would be the top choice... of course depends on how wide
angle etc etc...</div>
<div> </div>
<div>/bo</div>
<div style="font-style:normal;font-size:small;display:inline;text-decoration:none;font-family:'Calibri';font-weight:normal">
<div style="FONT:10pt tahoma">
<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="artgodwin@gmail.com" href="mailto:artgodwin@gmail.com" target="_blank">Adrian Godwin</a> </div>
<div><b>Sent:</b> Monday, September 30, 2013 2:29 PM</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] intro</div></div></div></div></div>
<div> </div></div><div><div class="h5">
<div style="font-style:normal;font-size:small;display:inline;text-decoration:none;font-family:'Calibri';font-weight:normal">
<p>The problem with Doppler is that I want to detect occupancy without movement,
eg sleeping. This isn't easy but we're experimenting with some 16 pixel thermal
cameras. These might be able to learn environmental warmth and distinguish it
from bodies.</p>
<div class="gmail_quote">On 30 Sep 2013 12:03, "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">
<div dir="ltr">
<div dir="ltr">
<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri'">
<div>hehee</div>
<div> </div>
<div>ours are locked in a room and they keep log who has used them when... the
room/hall we have are at the local uni so we are not the only ones that use
them, hence i think i can rely on at least 2 of them up and running... its
makerbots 2 i think... the 3rd i forgot to note name on</div>
<div> </div>
<div>common for all 3 is that they accept a sd card... small lcd and
buttons</div>
<div> </div>
<div>Hmm... about sensor... is that not only true for IR types?... </div>
<div> </div>
<div>/bo</div>
<div style="FONT-SIZE:small;FONT-FAMILY:'Calibri';FONT-WEIGHT:normal;FONT-STYLE:normal;TEXT-DECORATION:none;DISPLAY:inline">
<div style="FONT:10pt tahoma">
<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="artgodwin@gmail.com" href="mailto:artgodwin@gmail.com" target="_blank">Adrian Godwin</a> </div>
<div><b>Sent:</b> Monday, September 30, 2013 11:57 AM</div>
<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] intro</div></div></div>
<div> </div></div>
<div style="FONT-SIZE:small;FONT-FAMILY:'Calibri';FONT-WEIGHT:normal;FONT-STYLE:normal;TEXT-DECORATION:none;DISPLAY:inline">
<div dir="ltr">
<div>
<div>The hackspace-owned ones have been mostly kit-built, and suffered from
inadequate care and over-enthusiastic fixing. It's quite a big hackspace and
not very easy to enforce good practice. The most reliable, mechanically, was
an old Stratasys but the extruder died and a replacement (based on reprap
components) seems to be taking a while to get completed.<br><br></div>We've
recently got a lulzbot that hasn't broken yet, but I wouldn't want to rely on
that indefinitely!<br><br></div>Agreed about temperature measurement at the
ceiling. Unfortunately it's also the best place for a movement sensor.
<br></div>
<div class="gmail_extra"><br><br>
<div class="gmail_quote">On Mon, Sep 30, 2013 at 10:42 AM, 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="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">
<div dir="ltr">
<div dir="ltr">
<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri'">
<div>Hi</div>
<div> </div>
<div>are the 3d printers homebrew? i was thinking that and bad build... or
that people does not take enough care of them?</div>
<div> </div>
<div>anyways i got access to 3 3d printers... on top of that a
pick&place... reflow oven as soon boards to control my toaster oven is
here... last bit yet to order in a bit is a solder paste dispenser</div>
<div> </div>
<div>tried stencils but the setup time is prop more than it would be doing
it manual... also the paste got smeared out under the stencil</div>
<div> </div>
<div> </div>
<div> </div>
<div>i know damon is playing with a sensor to detect occupancy.... but i
would not place the stuff at the ceiling.... all the hot air goes up there
and it would be the wrong place to messure temp... a microwave sensor and
then messure at more normal hight... say arround chest hight a bit away from
radiators so you dont get false readings</div>
<div> </div>
<div>/bo</div>
<div> </div>
<div> </div>
<div style="FONT-SIZE:small;FONT-FAMILY:'Calibri';FONT-WEIGHT:normal;FONT-STYLE:normal;TEXT-DECORATION:none;DISPLAY:inline">
<div style="FONT:10pt tahoma">
<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="artgodwin@gmail.com" href="mailto:artgodwin@gmail.com" target="_blank">Adrian Godwin</a> </div>
<div><b>Sent:</b> Friday, September 27, 2013 12:27 PM</div>
<div><b>To:</b> <a title="opentrv-dev@lists.opentrv.org.uk" href="mailto:opentrv-dev@lists.opentrv.org.uk" target="_blank">opentrv-dev@lists.opentrv.org.uk</a> </div>
<div><b>Subject:</b> [OpenTRV-dev] intro</div></div></div>
<div> </div></div>
<div style="FONT-SIZE:small;FONT-FAMILY:'Calibri';FONT-WEIGHT:normal;FONT-STYLE:normal;TEXT-DECORATION:none;DISPLAY:inline">
<div>
<div>
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>
<div>Hi,<br><br></div>I've just sent a join request to the list admin after
seeing Damon's pitch at the Connecting Homes event. I've been looking
through some of the list archives and have probably missed a few things, but
am wondering if I can help out with some parts.<br><br></div>I'm a member of
London hackspace and have access to the tools there. Items that may be
useful are an envronmental chamber, a laser cutter, a 3d printer and a
reflow oven.<br><br></div>It's fairly common for the 3d printer to be
broken, but there's also a group based near reading who have well-developed
printers, the thames valley reprap group. These might be a useful resource
for getting small quantities of prints made. Given how much effort seems to
be involved in keeping 3d printers working, this might be more efficient
than buying the Maplin machine.<br><br></div>I've personally got some SMD
equipment - small irons, hot tweezers, hot air, microscope. I don't have
reflow or paste equipment yet, though. There are a couple of people at the
hackspace who have done more with stencils and
dispensers.<br><br><br></div>I was at the Connecting Homes even in
connection with an energy-managed house project. This also requires good
occupancy sensors and we're looking at a crude thermal imaging camera. We
think there might be a case for making a ceiling-mounted occupancy sensor
with light and temperature sensors and I'm wondering if this could share
some development with your
plans.<br><br></div>-adrian<br> <br></div></div></div>
<hr>
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