Re: gEDA-user: Outsourcing PCB layout

[msokolov@xxxxxxxxxxxxxxx (Michael Sokolov)]

Gabriel Paubert <paubert@xxxxxxx> wrote:

> Sorry, I did not express myself well, I meant the TI part (SN75LBC784),
> that one does not appear in stock in any of my providers.

I have it in my design for the sentimental value - I just like EIA-423 -
and I have 25 of those parts in my little grabby hands, enough for my
own play.

If that ISP follows through on wanting 100 of my units (or if someone
else expresses a similar interest), *and* if we can somehow solve the
RS8973 situation, then I'll revise my design and respin the PCB for
whatever is available in the requested quantity.  But I don't want to
think about that at the present time.

Right now I just want to get the damn thing finally built after all
these years, just for my own personal sanity, just to prove to myself
that I can design and build a piece of hardware of that level of
complexity - even if it's only a one-off piece that can never be made in
volume.  I've been working on this project since 2006, and there were
several times over the last 2.5 y when I was just about ready to put the
finishing touches on it and send it off to layout, but every time I had
a context switch.  If I have a context switch, the project goes into the
background and won't resurface for another few months at least.  Then
the cycle repeats.

With Ineiev getting ready to do the layout for a price I can easily
afford on my hobby budget, I want to actually make it happen this time.
At this point I want as little change to my design as possible.
Basically I want to change my currently existing design only if it is
rather certain that the circuit won't work if I give it to Ineiev with
my current netlist as it stands.  If the circuit has a high chance of
working as it currently stands with the current netlist and the parts I
physically have on hand, I want to lay it out and build it as it stands.
(I'm going to have a couple of local friends who are real HW engineers
review my schematics for the cost of me taking them out to lunch to help
me answer that go/no-go question.)  If I start making bigger changes to
my design, I'll have another context switch to other pressing life needs
and the gadget won't get built for at least another year...

MS


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