Not that I recall, but it is covered in the EESchema help (which is much more extensive than the tutorial) it's in section 8.3
Andy On Mon, 28 Dec 2009 17:55:47 +0000 (UTC) Donald H Locker <[email protected]> wrote: > Does the tutorial include the power flag? Sorry - I just use it and haven't > done the tutorial. > > Donald. > ----- Original Message ----- > From: "Andy Eskelson" <[email protected]> > To: [email protected] > Sent: Monday, December 28, 2009 12:50:25 PM GMT -05:00 US/Canada Eastern > Subject: Re: [kicad-users] Problems with ERC check on example schematic > > You are prob. falling into the very common trap of not telling the system > that there is power on a net. This gets confusing because sometimes you > don't have to do this. > > > The VDD and VSS pins of the chip are both defined as power IN types. You > can check this by using the part editor. > > For DRC to would correctly it much see a power OUT net attached to these > pins. > > If you have some form of regulator chip on the board, the output of the > regulator is normally defined as a power out type, so that takes care of > the VDD voltage. > > However the GND/VSS connection is NOT defined as a power OUT. > > Next take the situation where you don't have an on board regulator, in > this case neither the VSS nor VDD is defined as having a power OUT > available. > > To overcome this is easy enough, in the powerport symbols, select a > power flag, and attach this to the GND of you power net. The power flag > simply tells the system that there is power applied to that net. You can > also add a power flag to the VDD line if you are using external power. > > All you may then need to do is add a VSS power port to the circuit and > attach that to the GND net, then everything should connect and DRC run > without errors. > > Just remember that you almost always need to add a power flag to the GND > networks, but sometimes not to the +ive power nets. > > > Andy > > > > > On Mon, 28 Dec 2009 04:49:45 -0800 (PST) > yukku yukkoooooo <[email protected]> wrote: > > > Hi, > > > > I am a first time user of a PCB design software and also the Kicad > > software. So I tried the example Kicad tutorial, but I got stuck when after > > finishing the example, I constantly get an ERC error with arrow at pin 8 of > > the PIC12C508A (VSS to be conencted to Ground). I tried deleting the wire > > and reconnecting many times and still not able to make the error go away. > > > > Do you know what I am doing wrong ? > > > > yukku > > > > > > > > > > ------------------------------------ > > 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 > > >
