UmTRX Digest, Vol 4, Issue 45

Andrey Sviyazov andreysviyaz at gmail.com
Sun Nov 11 21:47:10 UTC 2012


Unfortunately, Protocase can't supply proper heat sink as we might wish.


Best regards,
Andrey Sviyazov.



2012/11/12 Alexander Chemeris <alexander.chemeris at gmail.com>

> On Thu, Nov 8, 2012 at 11:30 PM, Darby <darbysgoodies at gmail.com> wrote:
> >> I'm not sure whether you actually need a 3D design here? As I see it,
> >> you select a proper existing case and just design front/rear panels
> >> and drilling pattern for mounting. I may be wrong, though - I've never
> >> done this before. I just worry that a fully custom case could be too
> >> expensive in small quantities.
> >
> > Im sure you could use a preexisting design, and just punch some holes
> > in the sides for convection cooling, then punch some holes in the back
> > to accommodate power & cabling, and use some motherboard standoffs
> > that would keep the board mounted in place on the enclosure floor.
>
> Yes, I was looking for something like that - simple and inexpensive.
> It would be a shame if a case cost a considerable part of the thing.
>
> > I was thinking more along the lines of stamped/bent sheet metal, some
> > lightpipes (plexyglass or polycarbonate) in the front so youve got
> > visibility of the lights in the front & some countersunk holes on the
> > sides to keep the 2 C shaped (or L shaped would work well too? -Which
> > might be a better implementation for mounting purposes if youre going
> > with lightpipes as opposed to holes in the case for lights) pieces
> > bolted together & a powdercoated or painted finish?
>
> For lab version we could use 3-LED columns, like the ones we used in
> UmTRXv1:
> http://wiki.umtrx.googlecode.com/hg/images/umtrxv1/UmTRX-top.jpg
> UmTRXv2 has places to colder them instead of SMD LEDs:
> http://wiki.umtrx.googlecode.com/hg/images/umtrxv2/UmTRXv2.jpg
> In this case light-pipes are not needed and we could just drill holes
> at the front panel.
>
> I have no preference between U/C, L or slide-in cases. Anything which
> is easy to handle, inexpensive and looks good is fine.
>
> > I found some design tools at protocase, that it looks as though will
> > pushout 3d cad files as deliverables, but looking thru the project
> > files -I cant seem to find anything that would give me specifics on
> > distances between the mounting holes from each other's centerpoints &
> > how wide these holes are, If someone can point me to a place where I
> > can find this -Ill take a stab at case design when Ive got some free
> > time...   =)
>
> No idea, sorry. I think you'd best contact Protocase with this uestion
> - I think they should be interested in supporting potential customers.
>
> > On a side note, They also have an extruded aluminum offering
> > (http://www.protocase.com/products/index.php?e=Aluminum) where the
> > sides are the same between the left & the right, with a fixed height
> > of 1.72" (43.688mm). For mounting they use some internal channels that
> > the board will slide into (as opposed to motherboard standoffs as
> > suggested above) then they use a sheetmetal bridge for the top &
> > bottom to determine the width & then sheetmetal on front & back as
> > well -Depending on quantity, they might be willing to sell lengths
> > (like say 10 or 20ft at a time) that your people could cut to size &
> > fabricate their own top/bottom/front/back panels?
> >
> > Just a thought...
>
> Hum, this looks interesting. Though we need something ready, i.e.
> already cut and with ready-to-use front/back panels.
>
> I wonder how much would it cost to get cases shipped from them to
> Europe. For, say, 20-50pcs.
>
> --
> Regards,
> Alexander Chemeris.
> CEO, Fairwaves LLC / ООО УмРадио
> http://fairwaves.ru
>
>
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