[Diy_efi] RE: help with Eagle PCB software

Dan Zorde dzorde
Thu Mar 2 23:55:30 UTC 2006

Steve, I'm not familiar with Eagle. But most schematic packages have a
set of rules they follow (generally a rule matrix). See if you can find
the setup for that and check if it flags Input and Output pins connected
to Power pins as an error.

Generally you can set it up to provide warnings and errors or IGNORE.
But it will do this for the entire design.

Alternatively, you should be able to go in and change the library model
(or create your own) for the regulator and just make the pins power pins
instead. Generally an Input or Output pin would be considered just that
(ie a port pin on a micro) so you wouldn't generally connect power
directly to it, hence the ERC you are getting is correct.

I would simply change the library model to be correct if possible.


>And the linear regulator I added to the schematic has it's pins as type
>IN and OUT rather than PWR or SUP, which doesn't seem to make sense,
>it's causing ERC errors.
>I did find several places that needed to have a junction added, got
>those sorted out.  And from the exported netlist I can see where the
>other errors are (like OUT and PWR pins connected to the same net), but
>I'm not sure how to fix it.  I'll take another look tonight and if I
>can't get it right I'll upload the schematic for some of you experts to
>take a look at.

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