Re: PCB Layout Designers

Tom wrote:

Does anyone know of an existing package that allows for this approach,
ie not bothering with the schematic?

Sure, EAGLE from CadSoft. It comes in three modules -- schematic, board
editor, and autorouter -- that you can buy seperately. So if you only buy
the board editor you get exactly the functionality you want.

This is kind of related to the first, I'd be interested to know if
everyone designs their PCB's from the schematic stage upwards on
computers, or whether there are many people creating the PCB layout
only?

Everybody (except your dad) does it in CAD, from schematic upwards. It's
sooo much easier to maintain consistency between schematic and board. Of
course many people first draw schematics by hand, but before they go to the
board stage they'll recreate the schematic in CAD and then do the board in
CAD as well.

Remember: If the CAD schematic is correct, there is NO WAY the corresponding
board could be electrically faulty (i.e., have missing or wrong connections
between parts) because the CAD package will always ensure 100% consistency.
Or is anybody aware of a CAD system that doesn't maintain board-schematic
consistency? That would be something to steer clear of.

robert
.

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