If you have a cct that has power out or power in pins and you have nothing on the board that drives them, i.e. the power is external to the board. You just need to add a POWER FLAG to the net that connects to your power lines. This tells the system that the lines are driven.
That should overcome the problems without creating all sorts of new power ports. Andy On Tue, 1 Sep 2009 11:09:55 -0500 "Jim Hughen" <[email protected]> wrote: > Thanks Dick, > > I have figured it out, and it agrees with what you are saying. > > I am building 'power ports' in the same way you are. > I am doing a Schematic ERC, but primarily interested in connectivity (no IN's > to OUT's etc). > Pin types can be 'power in' or 'power out'. > > Power ports must comply with at least 2 rules: > 1. The pin must NOT be drawn. > 2. The pin type must be 'power in' or 'power out' > else, the net list will not connect correctly. > > I really do not want to specify a 'power out' pin to drive the net of 'power > in' pins. It just seems like a lot of trouble. So I end up with Schematic > ERC - "Warning power pin in not driven". > > Then, checking the manual, I found the Schematic ERC options. Alas, it seems > none of these options would permit the power ports without a single > 'power_out' pin type in the net. > > So I am going fine. I will likely allow the ERC warning to remain, but am > loathe to do so. > > Thanks for confirming this stuff, > ...Jim H. > > > > > ----- Original Message ----- > From: dickelbeck > To: [email protected] > Sent: Tuesday, September 01, 2009 10:46 AM > Subject: [kicad-users] Re: placing Power Ports > > > When you say 'power port', can I assume you mean something like a ground > symbol or a symbol for +5V which you make yourself? > > If so: > > I would check the help manual for special requirements on parts that are to > be sources and sinks of power. (parts with a single pin.) > > I have a personal library with several such parts, and although I cannot > recall exactly, I know I was referred to the manual when I asked a similar > question 2-3 years ago on this list. There was something special about > building these parts, but I don't remember whether it was PIN name or what.... > > I just know it is recorded on this list, and also in the manual. > > What you want, CAN be done, as I have a library full of such components. > > Dick > > > >
