Ok, so lets leave the values. The main reason I don't want them on F.Fab
is that F.Fab could be used for the ipc assembly.
Even if kicad allows generating list of parts locations and it's
possible to localize them without well silkscreen I still believe it's
very convenient to have the drawing with footprints outlines with refdes
inside (for me more straightforward). Is any other layer where this
could be placed? Am I the only user who finds such layer so important?
W dniu 03.09.2015 o 23:01, Jean-Paul Louis pisze:
Hi nnn,
I do not understand your point about having values on the PCB. NOBODY in the
industry put values on the PCB.
To facilitate the assembly, a lot of companies I worked for used a FAB drawing
with one inch grid, and then generate a list of parts with the location on the
grid. That’s more than enough to locate a part when troubleshooting.
You can do the same easily.
Just my $0.02,
Jean-Paul
AC9GH
On Sep 3, 2015, at 3:32 PM, nnn <nnn4...@o2.pl> wrote:
I don't want remove refdes from silkscreen - just add a copy (text %R) scaled
to footprints size - this layer really helps when you need to find component
from schematic on a pcb (if you don't have computer with your design in a lab).
W dniu 03.09.2015 o 21:25, Andy Peters pisze:
On Sep 3, 2015, at 11:06 AM, nnn <nnn4...@o2.pl> wrote:
Some time ago after short discussion on librarians mailing list it was decided
to change default reference and value fields of footprints and move values to
F.Fab layer.
I think it was bad decision. I'm asking here to get more opinions.
For the value fields, putting them on the Fab layer is fine. As Chris notes,
pretty much nobody prints the values on the board but having them on an
assembly or fab drawing helps the human who’s stuffing the board.
I think having the reference designators on any non-silkscreen layer is a
mistake. If the ref-des is on the F.Fab layer, your generated Gerbers won’t
have them on the F.SilkS (or B.Silks) layer, but rather on the Fab layer — and
the PCB fab guys will probably bounce your design back because they won’t know
how to make a silkscreen out of stuff on the F.Fab layer, especially when a
silkscreen layer already exists in the package!
And to make matters worse, if you had older parts in your library or a design
which had the ref-deses all on the F.SilkS layer, and you add new footprints
which have the ref-des on the F.Fab layer, your Gerbers will be all confused,
since some parts will show a ref-des on the silkscreen and some won’t.
I think it’s a matter of expectations: EVERYONE expects the reference
designators to be on a silkscreen layer.
-a
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