|
Steve Unfortunately not at the moment, I’ll
see what I can do. To get started on daughter card design, the important thing
in my description below is that the real estate we have to use is going to be 2”
by 4 Inches, with the 96 pin connector on one 4 inch side (Standard EuroCard
width and about ¼ the depth) any connectors to the real world on the other 4
inch side which protrude through the front panel. Maximum height of components
on the board must be < .75 inches per original suggestion. I estimate raw
costs on manufacturing a daughter board will be about 16 – 20 bux
depending on quantity. I am still googling enclosures so the height
of the backplane is still in question. I am trying for Phil’s 4 board
selection. Also motherboard stacking is still in question, but will probably
come out the bottom or the top of the enclosure. That might be left on the MB
in final design, but inaccessible from this particular enclosure. If an enclosure with vertical as well as
horizontal slides is chosen, any additional length in the enclosure (i.e. 4
inches in a standard eurocard enclosure) would have vertically mounted boards
to hold such larger components as power regulators. I’ll try to get a concept drawing. I have found a Rose+Bopla “Build a Box”
which fits our approximate requirements, but I am still searching. Also I have
not found a distributor for these enclosures. Anything OEM tends to be
expensive, in small quantities. Eric From:
xylo-sdr-bounces@lists.ae5k.us [mailto:xylo-sdr-bounces@lists.ae5k.us] On Behalf Of Steve Nance Eric, Having a hard time visualizing this box.
Got a picture or drawing to look at? Steve From:
xylo-sdr-bounces@lists.ae5k.us [mailto:xylo-sdr-bounces@lists.ae5k.us] On Behalf Of Eric Ellison Folks Phil, and Cecil thanks for the extensive RFC. I will have an
enclosure and design based on your earlier comments, perhaps it will become a
‘product’ in itself. This is more within my capability as a
contributor. Youse guys should go back to producing circuits to go in the
‘box’. My plan: Enclosure and motherboard based on Euro or VME standard buss
structure 96 lines including 3 powers and ground, triplicate pin assignments
removing 12 pins from 96. Enclosure construction with vertical and horizontal card
slides. Design project board real estate will be standard EuroBus
100 mm (3.9x inch) width horizontally mounted on slides with a 2 inch depth
(2”x4” inches) Case depth will probably be 6 inches with 2 boards mounted
vertically in the rear to mount larger components to support power and modules
like GPS rcvrs (TBD) Height still to be determined. Target price for enclosure and backplane minus active
components is < $50 Have at it. Anyone up to desiging a Cyclone II heartbeat
with FX2 USB, I2C, Serial port front mounted on 3.9” ??? Eric |