I have found that a magnetic pad setting helps you route a trace and "magnetically" attache the trace to the off-grid pad. However, with many surface mount components, specially the ones that have very small footprints and odd distances between pads, it is quite difficult to match the grid size on the module to the grid size on PCBNEW. That's why magnetic pads are very important, otherwise you will continually miss the center point of the pad while routing the board.
Kind Regards, Sigi Paez On Tue, May 26, 2009 at 6:05 AM, Andy Eskelson <[email protected]>wrote: > > > Just tried it out with a couple of odd sized libs and mods. > > PCBnew is OK, it will snap to the pins even if the grids are different. > > Eeschma will not (not having the equ. of a magnetic pad unless I've > missed it somewhere), the grids must be compatiable > > Andy > > > On Mon, 25 May 2009 20:52:08 -0300 > > "Alain M." <[email protected] <alainm%40pobox.com>> wrote: > > > It does here. So if it doesn't for you , that is a setup problem. > > > > Alain > > > > Andy Eskelson escreveu: > > > I don't think magnetic pads cure that problem. Magnetic pads are useful > > > in that when you are adding tracks the track will snap to the pad, > however > > > it does NOT (as far as I know) solve the position issue unless the > grids > > > of the mod/lib and pcbBew /escheema are compatible. i.e. the pins/pads > > > must fall on a grid point on the layout/circuit that you are working > > > on.They should be, but I have sometimes made the mistake of getting the > > > pins half a grid point off which causes quite a bit of trouble until > you > > > notie what you have done :-) > > > > > > > > > > > > > > > Andy > > > > > > > > > > > > > > > > > > > > > On Mon, 25 May 2009 15:15:47 -0300 > > > "Alain M." <[email protected] <alainm%40pobox.com>> wrote: > > > > > >> Andy Eskelson escreveu: > > >>> What can happen is that you may set out your component with a 25 > > >>> grid, and your circuit with a 20 grid. The component will sit on the > > >>> grid OK, with the reference dot on a grid point, but things like pins > and > > >>> pads (if you are talking about a module) will be out of step, and > will > > >>> not connect. > > >> there is an easy and very good solution fot that. It is called > > >> "magnectig pads" and it dinamicaly conects to unaligned pads. > > >> > > >> Alain > > >> > > >> > > >> > > >> ------------------------------------ > > >> > > >> Please read the Kicad FAQ in the group files section before posting > your question. > > >> Please post your bug reports here. They will be picked up by the > creator of Kicad. > > >> Please visit http://www.kicadlib.org for details of how to contribute > your symbols/modules to the kicad library. > > >> For building Kicad from source and other development questions visit > the kicad-devel group at http://groups.yahoo.com/group/kicad-develYahoo! > Groups Links > > >> > > >> > > >> > > > > > > > > > ------------------------------------ > > > > > > Please read the Kicad FAQ in the group files section before posting > your question. > > > Please post your bug reports here. They will be picked up by the > creator of Kicad. > > > Please visit http://www.kicadlib.org for details of how to contribute > your symbols/modules to the kicad library. > > > For building Kicad from source and other development questions visit > the kicad-devel group at http://groups.yahoo.com/group/kicad-develYahoo! > Groups Links > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > Please read the Kicad FAQ in the group files section before posting your > question. > > Please post your bug reports here. They will be picked up by the creator > of Kicad. > > Please visit http://www.kicadlib.org for details of how to contribute > your symbols/modules to the kicad library. > > For building Kicad from source and other development questions visit the > kicad-devel group at http://groups.yahoo.com/group/kicad-develYahoo! > Groups Links > > > > > > > >
