Op woensdag 21-07-2010 om 16:35 uur [tijdzone -0400], schreef DJ Delorie: > > - Internally connected pins and pads, e.g. SO8 MOSFETs with > > S on pins 1-3, G on pin 4, and D on pins 5-8. I can of course create a > > GSchem symbol with 3 pins for S and 4 pins for D, but is there a more > > elegant way in GSchem to deal with this? > > You could create a special S08 footprint with the pins numbered to > match the symbol, rather than have a symbol that's numbered to match > the generic footprint.
Of course, that is a far better solution -- now why didn't I think of that? :-) > > - So-called "don't care" pins and pads, e.g. mounting pads for SMD > > connectors. > > I name them "M1" through "M4" for example, and if you want to connect > them to something, yeah, they need to be in the netlist. I'm not sure > if DRC ignores them if they don't *have* a name, though. I just tested this, but DRC checking doesn't appear to take pin naming into account. > > - Pure holes (e.g. for plastic positioning nubs of SMD connectors): > > these often fail DRC check when too close to copper surfaces (e.g. > > mouting pads) -- probably because mounting holes are genarally used > > with metal screws. > > DRC doesn't know about screws, it only knows its rules, and even pure > holes should obey them or they might short. > > > Am I correct in surmising that gEDA currently only accomodates type 1? > > #2 can be done just by giving all the "same" pin the same name/number. So I figured already. Anyway, thanks for clearing things up, it will no doubt make working with gEDA even more enjoyable. Best regards, Richard Rasker _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
