<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>
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<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>
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<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>
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<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>
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<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><p>
</p><hr>
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