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Re: iMX6 EOMA-68 CPU Card

On Wed, Feb 27, 2013 at 7:42 PM, Sven Luther <sven.luther@plz.fr> wrote:
> On Wed, Feb 27, 2013 at 07:39:31PM +0000, Luke Kenneth Casson Leighton wrote:
>> On Wed, Feb 27, 2013 at 5:10 PM, Bill Gatliff <bgat@billgatliff.com> wrote:
>> > Luke:
>> >
>> > On Tue, Feb 26, 2013 at 6:51 PM, luke.leighton <luke.leighton@gmail.com> wrote:
>> >> http://rhombus-tech.net/freescale/iMX6/news/
>> >>
>> >> just a heads-up that the iMX6 EOMA-68 CPU card is probably about 3-5
>> >> weeks away from a first prototype, so i wanted to ask people if there
>> >> is any feedback on RAM, NAND flash sizes or any other features that
>> >> would make it useful to the debian arm community at all.
>> >
>> > Know what would be even more amazing than this board? To hear that you
>> > did it with the gEDA stack.  :-)
>>  me too - i'd seriously, seriously love to be able to say that.
>> however, the free software tools simply aren't up to scratch: there
>> aren't any with an auto-router function and i'm not knowledgeable
>> enough to be able to do without applying strict
>> software-engineering-style rules.
> I am no electric engineer, but i had a collegue who designed three arm based boards with gEDA,
> it is feasible.

 ... if you know what you are doing.  i don't :)  if you know exactly
how to lay out differential pairs by hand such that they will cope
with 3ghz signals, that's fine: you can do that by hand with gEDA or
any other software.  if you know exactly how to then create the
ground-plane protection around those 3ghz differential pairs, that's
absolutely fine, too.

 the list of things that you need to know just goes on and on, and as
this is the very first project i've done, and am throwing myself
head-first in at the deep end, and on tight time-schedules as well, i
have to rely on software which has the majority of what most
electrical engineers with 20 years experience [*1] know encoded
instead into automated software.

 so yes, it *can* be done... but not by numptys like me :)


 [*1] i've an arrangement with one such experienced EE, whom i will
pass the design over to once a week and pay him to advise what needs
to be done.

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