This is the same problem I had in a recent post. The ERC sees a whole set of power pins as 'driven' (they need to have power supplied to them). Then there must be a singular 'power' pin (I'm not sure how to specify it) that supplies power to the others. Your error is saying that this single power output pin has not been declared.
I am loathe to permit any warnings in the ERC, but I have allowed this one for the time being. It is a good idea to do error checking in the schematic, of course. And even to check that inputs are driven by outputs. I have just found the work to put this information into the schematic is not very productive. I think this may be a result of many confusing circuit node characteristics when connectivity is characterized by a rule set. So, I declared everything 'passive'. Still running the ERC is very necessary. That's when I got this error 'GND is not driven'. I could not find a work around that did not require placing info into the schematic about the directional characteristics of the power pin' BTW - I do not use hidden power pins. Why do it? Those are very important to the circuit. I just don't want them to be implicit or described in a reference table. There might be some error between the reference table and the hidden power pin declarations that is not found untill the PCB prototype is powered up. KiCAD is a great tool! ...Jim H. ----- Original Message ----- From: josh_eeg To: [email protected] Sent: Tuesday, September 15, 2009 6:17 AM Subject: [kicad-users] A rule check issue that is confusing me. I have GND comming from a header A rule check issue that is confusing me. I have GND comming from a header. Their is the same GND in other places on the circuit. But I get a error like it should be driven. But that sounds like a short... ERC: Warning Pin Power_In not driven. I have GND hooked to a header... Now that same ground simbol is in the rest of my circuit. Please help.
