Re: gEDA-user: gschem sym-creation help (newbie)

[John Luciani <jluciani@xxxxxxxxx>]

You may want google this list for the discussion on "light" and "heavy" symbols.

My preference is to use light symbols (minimum number of attributes)
when creating
a symbol. If you start adding footprint attributes you will have RESISTOR_603,
RESISTOR_805, RESISTOR_1206 symbols. If you thne need to change the graphics of
the resistor symbol you have to change multiple symbols.

If you only use a few (or just one) footprint for a particular symbol
you could add a footprint
attribute. This can work well for ICs.

The only attributes required for PCB are footprint and refdes. 
Value and refdes are used when you create a BOM or assembly drawing.

I keep all of the symbols I use in my own local directory tree. If I
find a symbol I like
in the gschem library or I create a symbol I move it to my local
directory. I place my
directory tree first in the system-gafrc file.

(* jcl *)




On 7/10/05, phil@xxxxxxxxxxxxxxxxxxxxxxxx <phil@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> 
> Is it customary to add _only_ the refdes attribute to a symbol created in
> gschem?
> 
> Is it then customary to add the footprint, value, and device= attributes in
> gschem in the process of producing a schematic?
> 
> I plan to use pcb with gschem -- are these (value, footprint, refdes, and
> device) the only attribs required?
> 
> If I use a part like the LM-431 all the time in a certain package, should I
> keep a version of the symbol in a local dir (e.g.
> file:/usr/share/gEDA/sym/local) with the footprint and other attributes
> already added?
> 
> Am i totally confusing what attributes are meant to do?
> 
> Thanks for any help, Phil
> phil+at+advancedarchitecture.org
> 
> 
>