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Re: gEDA-user: Preventing elements from appearing in BOM
On 08/20/2011 11:50 AM, Matthew Lewis wrote:
Is there a way to prevent a device from appearing in the BOM and in
the XYRS file? The problem I'm trying to solve is that I have a pin
defined in my schematic for attaching a wire to the PCB. There is no
actual device to be installed. In order to get the pin to show up on
PCB's rat's nest, I defined a dummy device with a hole for a
footprint. This allows the rat's nest to show that there's something
that needs to be added to the PCB layout. The problem now is that the
dummy device shows up in the BOM and is also being placed in the
gerber XYRS file. So the question is how do I get the hole to be
recognized by the rat's nest on PCB, but get omitted from the BOM and
the XYRS exports?
I usually put 'DNP' for 'Do Not Populate' in the 'Value' attribute and
append a note in the file to that effect. Most assembly houses know and
work around that. If not, then you get to write a handy script to scrub
DNP lines or do it manually.
I've also noticed that the BOM generated by the export function of PCB
is showing the device's footprint rather than the device name for the
description. Is this correct?
I think that the intended/more common flow is to use gnetlist to
generate the BOM from the schematic. There was a message on the list
just recently that pointed to the exact locations for generating BOMs.
-Ethan
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