I was thinking we’d handle it under: https://bugs.launchpad.net/kicad/+bug/980919 <https://bugs.launchpad.net/kicad/+bug/980919>
> On 22 Jul 2019, at 12:53, Seth Hillbrand <[email protected]> wrote: > > Hi Jeff and JP- > > Should we consider a new flag for board-only items? These would be items > that exist on the board but not the schematic. Would be useful for NTPH > mounting holes, logos, etc, that get added in pcbnew and shouldn't be removed > when updating, even if they are not locked. > > This could help to separate the locked flag into flags that mean "don't move > without warning" and don't delete automatically (as part of [1]) > > Best- > Seth > > [1] https://bugs.launchpad.net/kicad/+bug/1745627 > > On 2019-07-22 10:27, Jeff Young wrote: >> And just to add one more (which was the instance that prompted my >> question): >> Logos, certifications, etc.: symbol: no, footprint: yes, virtual: yes. >> But I see now that we can’t use virtual as a proxy for “don’t >> treat as ‘extra’ when deleting extra footprints” because if you >> delete a symbol in one of the symbol:yes cases, then you _do_ want the >> footprint deleted. >> Cheers, >> Jeff. >>> On 22 Jul 2019, at 01:53, Dino Ghilardi <[email protected]> >>> wrote: >>> Just few examples (expanding jp's answer): >>> having a schematic symbol, being virtual, having 3d model are not >>> related (you can have any combination of them). As examples: >>> First: a virtual footprint that has a schematic symbol (the answer >>> to your main question). >>> Edge connector: schematic symbol: yes, footprint: yes, virtual: yes >>> (the connector is implemented only with tracks on pcb, without the >>> need of additional components so no need to have it in the BOM). >>> "regular" component, as a Resistor 0805: has schematic symbol, Has a >>> footprint and we want it in BOM. (virtual: no.) >>> Hole without screw (yes, I'm copying jp's example): No schemaitc >>> symbol (or sometimes yes, depending on user's habits: someone likes >>> to have on schematics anything that will be on PCB, including >>> holes): Has a footprint but no items in BOM: (virtual: yes) >>> Hole with screw: Has a footprint but you want a corresponging item >>> in BOM to have the list of screws you need to buy (virtual: no). >>> P.S. (little bit off-topic): >>> Sometimes also virtual components can have 3d shapes (it is not >>> common but it is a way to quick-workaround a 3d view of a >>> more-than-one board assembly: export a step file of the board 1 and >>> assign that as a 3D shape to a connector or a mounting hole of board >>> 2. -very useful to check for mechanical collisions-). >>> Cheers, >>> Dino. >> --------------------------------------------------------------------- >>> On 22/07/19 09:02, jp charras wrote: >>> Le 22/07/2019 à 06:03, Jeff Young a écrit : >>> This flag tells us that there’s no physical object for a >>> pick-n-place machine. But is it also true that there’s no >>> corresponding symbol in the schematic, or are there some virtual >>> footprints that would have a symbol? >>> What about some microwave elements, for instance? Do they have >>> symbols? >>> "Virtual" footprint means the physical "component" is made only by >>> the >>> drawings on the board. >>> Therefore: >>> - These fp have (usually) no 3D shapes, and the component should be >>> not >>> in BOM. >>> - They of course have a symbol in schematic. >>> In fact any footprint connected to a at least one net *should* have >>> its >>> corresponding symbol in schematic. >>> (I am thinking all footprints should have a corresponding symbol >>> because >>> in many cases these fp need a unique refdes: for instance to import >>> them >>> to a .dsn file) >>> Microwave elements, and edge connector cards are often virtual, if >>> only >>> a drawing is enough to create them. >>> Net ties are virtual and *need* a symbol. >>> However, Microwave elements and Net ties connecting 2 or more >>> different >>> nets are not easy to use in Pcbnew: >>> See this thread >>> https://lists.launchpad.net/kicad-developers/msg24455.html >>> to know what is missing in Pcbnew (the Tomasz's proposal is exactly >>> what >>> is needed in Eeschema/Pcbnew). >>> Mechanical holes can be virtual or not: >>> A mechanical hole with a screw inserted inside it should be not >>> virtual. >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp
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