The ERC check sounds sensible. I know that invisible pins are also used to place many pins in a single spot, so you can connect multiple pins with just one wire (think of e.g. ground connections). We may need to take this case into account.
Cheers, Orson On 02/07/2018 02:32 PM, Jon Evans wrote: > We could hold this until after 5.0 and either add an ERC check, or better > yet make it so that you can't actually make connections to invisible pins? > > -Jon > > On Feb 7, 2018 08:29, "Maciej Sumiński" <maciej.sumin...@cern.ch> wrote: > >> Hi Wayne, >> >> No, I have not reviewed the patch. I had some doubts about potential >> problems caused by invisible pins creating hidden connections. If user >> is neither aware of their presence when selecting a symbol, nor will >> notice them after they are placed on a schematic sheet then he may end >> up accidentally connecting them to some wires. IIRC we do not have an >> ERC test to check against such case, so I was not sure if it is a safe >> change. >> >> Cheers, >> Orson >> >> On 02/07/2018 02:21 PM, Wayne Stambaugh wrote: >>> Orson, >>> >>> Did you ever respond to Jon about this? I guess the question is whether >>> or not to show invisible pins in the component chooser. >>> >>> Cheers, >>> >>> Wayne >>> >>> On 1/15/2018 9:31 PM, Jon Evans wrote: >>>> Hi Orson, patch is attached again, hopefully it goes through this time. >>>> >>>> Thanks, >>>> Jon >>>> >>>> On Mon, Jan 15, 2018 at 4:24 AM, Rene Pöschl <poesc...@gmail.com >>>> <mailto:poesc...@gmail.com>> wrote: >>>> >>>> On 15/01/18 10:00, Maciej Sumiński wrote: >>>> >>>> Perhaps we should have an ERC rule >>>> that warns about invisible pins being connected to a wire, any >>>> thoughts? >>>> >>>> >>>> Invisible pins are used for three distinct applications. >>>> >>>> The first one is to remove clutter by hiding pins that should not be >>>> connected. ERC will complain if you connect such pins if they have >> the >>>> electrical type "Not connected". >>>> >>>> The second application is to create "power labels". A invisible >> power >>>> input pin is handled as a global label. These pins are meant to be >>>> connected. >>>> >>>> The third application is again to remove clutter by stacking pins. >> Here >>>> you have one visible pin and several other invisible pins at the >> same >>>> location. (Normally all these pins have the same name and electrical >>>> type. With the exception of power input pins, power output pins and >>>> output pins.) >>>> Such pins are again meant to be connected. >>>> >>>> This means a ERC rule that complains about connecting hidden pins >> will >>>> create too many false positives. Having a lot of false positives >> means >>>> users will start to ignore ERC output. >>>> >>>> It might be a good idea to have a symbol checker that complains if >>>> invisible pins are used differently than i described above. >>>> In other words: complain for invisible pins if they are not part of >> a >>>> stack or of types NC or power input. >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Mailing list: https://launchpad.net/~kicad-developers >>>> <https://launchpad.net/~kicad-developers> >>>> Post to : kicad-developers@lists.launchpad.net >>>> <mailto:kicad-developers@lists.launchpad.net> >>>> Unsubscribe : https://launchpad.net/~kicad-developers >>>> <https://launchpad.net/~kicad-developers> >>>> More help : https://help.launchpad.net/ListHelp >>>> <https://help.launchpad.net/ListHelp> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Mailing list: https://launchpad.net/~kicad-developers >>>> Post to : kicad-developers@lists.launchpad.net >>>> Unsubscribe : https://launchpad.net/~kicad-developers >>>> More help : https://help.launchpad.net/ListHelp >>>> >>> >>> _______________________________________________ >>> Mailing list: https://launchpad.net/~kicad-developers >>> Post to : kicad-developers@lists.launchpad.net >>> Unsubscribe : https://launchpad.net/~kicad-developers >>> More help : https://help.launchpad.net/ListHelp >>> >> >> >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : kicad-developers@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp >> >> >
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