[PEDA] GND Net gone

Bagotronix Tech Support techsupport at bagotronix.com
Mon Jul 31 10:22:01 CDT 2006


I always show all pins in my schematics, even if they are not used on the 
component.  I name them "NC", set the electrical type as passive, and give 
them distinct pin numbers.  When placing these components on a schematic, I 
put a "no-erc" marker on the end of each unused pin.

I do this so that when I read the schematic later, I see that I have 
thought about what to do with those pins, rather than scratching my head 
and wondering "Did I overlook these unconnected pins?".  I think it's good 
practice to explicitly show unused pins and to show that they are in fact 
unused and unconnected.

Naming the not-connected pins "NC" makes it easy to search through the 
netlist to find them, and make sure they aren't connected to anything.

Best regards,
Ivan Baggett
Bagotronix Inc.
website:  www.bagotronix.com


Peter Bennett wrote:

> If a pin is not used at all in the component, there is no need to place it in 
> the schematic symbol (hidden or otherwise).  PCB does not care if there are 
> unused pins in a footprint, so it will not complain when you put a two-pin part 
> in a 3 pin package.
> 



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