[hpsdr] Sasquatch II

[Henry Vredegoor]

Hi Phil, Lyle, All

Reading your mail, the BGA packaging seems to be a show stopper for a DIY /
non-professional / non-hightech fabrication of a PCB with respect to costs.
I know there are solutions to convert a Ball Grid Array to a Pin Grid Array,
a sort of small daughter-PCB that has the BGA pads on one side and pins on
the other side.

One example:

http://www.mill-max.com/products/newproducts_detail.cfm?pid=7

This would allow you to use a conventional type PCB for the rest of the
circuit.
Don't know if such a thingy could reduce the costs (-enough) to make this a
possible solution?

73

Henry.


> -----Original Message-----
> From: hpsdr-bounces at lists.hpsdr.org 
> [mailto:hpsdr-bounces at lists.hpsdr.org] On Behalf Of Philip Covington
> Sent: donderdag 11 december 2008 13:17
> To: Lyle Johnson
> Cc: hpsdr at lists.hpsdr.org
> Subject: Re: [hpsdr] Sasquatch II
> 
> 
> ***** High Performance Software Defined Radio Discussion List *****
> 
> On Wed, Dec 10, 2008 at 5:40 PM, Philip Covington 
> <p.covington at gmail.com> wrote:
> > On Wed, Dec 10, 2008 at 1:48 PM, Lyle Johnson 
> <kk7p at wavecable.com> wrote:
> >
> >> The way I read things, the development path for Sasquatch may be:
> >>
> >> 1) Port dttsp to the Beagleboard.
> >>
> >> 2) Interface the Beagleboard to ATLAS via OZY (USB).
> >>
> >> 3) Create a small carrier board (Son of Sasquatch) for the 
> Beagleboard to
> >> allow its GPIO to interface to ATLAS.  This is very 
> dependent on there being
> >> sufficient bandwidth, etc., for the FPGAs downstream to be 
> loaded and
> >> interfaced (Penelope, Mercury, Phoenix/Janus).
> >>
> >> 4) Evaluate creating an OMAPL137-based board with the bus 
> bandwidth for
> >> ATLAS, etc.  If this looks like a reasonable thing to do then...
> >>
> >> 5) Port dttsp to the OMAPL137.
> >>
> >> 6) Create the hardware OMAPL137 board (Sasquatch II).
> >>
> >> ?
> >>
> >> 73,
> >>
> >> Lyle KK7P
> >
> > Looks like the only reasonable custom board route to go 
> down might be
> > the -L137 with the BGA256 package.   The cost of doing a board like
> > the Beagle Board with the OMAP3530 is going to be very very 
> expensive
> > unless you do 1000+, I think.  The cost of prototypes might be just
> > horrible.  There was a discussion on the Beagle Board forum about
> > doing custom OMAP3530 boards and the quotes they were getting were
> > hair raising.  Looks like the Beagle Board is 6 layers, .4mm, with
> > blind vias, etc... not cheap stuff!
> >
> > Phil N8VB
> >
> 
> Lyle, any thoughts on this?
> 
> Phil N8VB
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at hpsdr.org
> Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org
> HPSDR web page: http://hpsdr.org
> Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/


 1229000695.0