Mail Archives: geda-user/2015/12/29/17:48:18
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On Dec 29, 2015, at 1:15 PM, Nicklas Karlsson =
(nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] =
<geda-user AT delorie DOT com> wrote:
> I think in most EDA tools work is started by adding complete =
information for a component: symbol, footprint, pin mapping, ordering =
information,
I certainly don=92t do it that way. It starts as a sketch of topology. =
Without the topology, I can=92t figure out what values the components =
need, how much power dissipation, etc.
Ordering information is separate databases, as the schematic just has =
specs. I don=92t care if you get the part from Allied or DigiKey, nor do =
I care if the manufacturer is Kyocera or AVX, as long as it meets spec. =
Aerospace projects get additional specs layered on beyond the =
schematic's, and flight part procurement is a different thing from =
prototype. That=92s all beyond the schematics, and largely beyond =
layout. We try to make boards that can accept either prototype or flight =
parts, although that=92s not always practical.
> ... In gschem only a symbol is added. The database of complete =
information is usefuls but I think it should be run the other way, in =
gschem attributes are filled in and then a suitable entry is found in =
the database and if not a new entry need to be created or more =
attributes added. This method would be especially useful then ordering =
information need to be changed or added.
John Doty Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com
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