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Date:	Mon, 29 Feb 2016 02:56:16 +0530
Message-ID:	<CALT8Ef4jgS0DpVQQmOqiZDa0mKPP+25z8bfwB8hLfsUxoR7Gzw@mail.gmail.com>
Subject:	Re: [geda-user] pcb import --> Symbol heavifier
From:	"Shashank Chintalagiri (shashank DOT chintalagiri AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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I have a (fairly unwieldy and heavy) framework in-place / in-the-works
to do almost exactly that. It's far from being generally usable,
though. It's fairly complicated to setup, makes a lot of assumptions
and is overly susceptible to changes in vendor websites . The sources
are all up on github[1]. If you're interested in it you can get in
touch and I can try to help walk you through evaluating / setting it
up.

[1] https://github.com/chintal/tendril

Chintalagiri Shashank


On Mon, Feb 29, 2016 at 2:30 AM, John Doty <jpd AT noqsi DOT com> wrote:
>
> On Feb 28, 2016, at 1:12 PM, Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>
>>>> A BOM generator which automatically heavify symbols with ordering
>>>> information is what I ultimately want to write. Of course there have
>>>> to be a database with values to pick from.
>>>
>>> Keith and I recently put something like this together for Altus Metrum.
>>>
>>> We now, by default, only set three attributes on a part: 'device',
>>> 'footprint', and 'value'.  We have a "preferred parts" database that's
>>> just a tab-separated-values flat file, and a couple awk scripts that
>>> take the attributes for each part in a csv file, use the triplet above
>>> to index into the database, and fill in any missing attributes.
>>>
>>> This means that for almost all parts, we only have one place to update
>>> when we change manufacturer part data or vendor info for our 'preferred
>>> parts', yet we can override any attribute we need to on a per-design
>>> basis. ...
>>
>> In particular there will be no need to update schematic then there are no changes to schematic.
>>
>> This is particularly useful if there is a need for distributor part number.
>>
>>
>> Nicklas Karlsson
>>
>
> What I do is to make a key from four attributes: device, value, spec, and footprint. Spec is something like “50WVDC X7R” or “1% 1/10W”. Together, these form a sufficiently unique key to identify a part.
>
> But it gets tricky then, because there are generally separate organizations involved with their own approaches. The folks who order parts will have a “database” (really a spreadsheet) of approved parts. The board assembly house will have their own form they want. So, I have to customize the scripts frequently. One project has used three different layout shops and four different assembly shops for different phases.
>
> John Doty              Noqsi Aerospace, Ltd.
> http://www.noqsi.com/
> jpd AT noqsi DOT com
>
>

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