Power pins always cause a bit of confusion at first... Devices that generate a power out such as regulators have a power-out type pin.
Devices that NEED power have a power-in type pin. i.e. you connect the output of the 5V regulator to the Vcc pin of a chip. (The gnd pin is also considered a power in as well) So you connect the power out to a power in and all should be well. You do not connect power out to power out. (well not normally) Next you have the situation where you may not have any power out pins. i.e. the board is powered externally and has no regulators on board. In this case you need to tell the system that the power lines are actually energised, You do this by adding a power flag to your power lines. You normally insert a power port symbol, and then connect that with a wire to a pin or connector. You just connect the flag to this line. You have to tell the system that the GND is also powered by adding a flag to that as well. If you look at a regulator you will see that the GND is NOT a power out type pin. Do work through the tutorials a few times, it takes a bit of getting used to at first. Andy On Wed, 21 Oct 2009 09:41:55 -0700 Rob Frohne <[email protected]> wrote: > Hi All, > > I'm having difficulty finding which power_out pins are connected. I can > find one, which is the output of a regulator. The other one seems to be > a power pin, but according to the library, it is a power_in. I seem to > have three of these problems. > > ERC control (Wed 21 Oct 2009 09:40:59 PDT) > > ***** Sheet / (Root) > ERC: Error: Pin power_out connected to Pin power_out (net 89) (X= 1.900 > inches, Y= 6.600 inches > ERC: Error: Pin power_out connected to Pin power_out (net 89) (X= 3.650 > inches, Y= 6.600 inches > ERC: Error: Pin power_out connected to Pin power_out (net 89) (X= 3.700 > inches, Y= 8.150 inches > > >> Errors ERC: 3 > > Any tips? > > Thanks, > > Rob > > -- > Rob Frohne, Ph.D., P.E. > E.F. Cross School of Engineering > Walla Walla University > 100 SW 4th Street > College Place, WA 99324 > (509) 527-2075 > http://people.wallawalla.edu/~rob.frohne > > > > ------------------------------------ > > 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 > > >
