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gschem -- List of footprints

Discussion in 'CAD' started by Bernhard Krämer, May 4, 2005.

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  1. Hello,

    I am starting using the gEDA suite. For the beginning, it is a bit
    complicated to assign a footprint to every part. Which footprints do exist?
    I do not want to parse all .inc files in /usr/share/pcb/m4 to find out.

    Is there a list of all footprints ?

    Yours,

    Bernhard
     
  2. : Hello,

    : I am starting using the gEDA suite. For the beginning, it is a bit
    : complicated to assign a footprint to every part. Which footprints do exist?
    : I do not want to parse all .inc files in /usr/share/pcb/m4 to find out.

    : Is there a list of all footprints ?

    John Luciani maintains an archive of PCB footprints at:

    http://www.luciani.org/geda/pcb/pcb-footprint-list.html

    The M4 footprints in /usr/share/pcb/m4 are obsolete, IMHO. Use John's
    instead.

    Stuart
     
  3. Thanks for the link. I looked for the footprints I need. Unfortunately, I
    still don't find what I need. Is there a footprint for the DO-4 package?
    For the DO-35? And for the DO-201? Furthermore, I am looking for the
    footprint of the MMA0204 resistor package. Am I wrong or do I have to draw
    all footprints myself?

    Thanks,
    Bernhard
     
  4. : Stuart Brorson wrote:

    :> : Is there a list of all footprints ?
    :>
    :> John Luciani maintains an archive of PCB footprints at:
    :>
    :> http://www.luciani.org/geda/pcb/pcb-footprint-list.html
    :>
    :> The M4 footprints in /usr/share/pcb/m4 are obsolete, IMHO. Use John's
    :> instead.

    : Thanks for the link. I looked for the footprints I need. Unfortunately, I
    : still don't find what I need. Is there a footprint for the DO-4 package?
    : For the DO-35? And for the DO-201? Furthermore, I am looking for the
    : footprint of the MMA0204 resistor package. Am I wrong or do I have to draw
    : all footprints myself?

    If you can't find the footprints in the built-in libs or at John's
    site, you probably need to create them yourself. Users of most EDA
    programs need to create their own symbols & footprints frequently,
    particularly for less-common parts. (Although I agree that DO-35
    isn't that uncommon. Why not just use an 1/8 W through-hole resistor
    footprint if you're in a pinch? Make sure you check the dimensions of
    both parts before you do this . . . . .)

    Here's a document which describes the newlib file format, which might
    be useful to you when creating PCB footprints:

    http://www.brorson.com/gEDA/land_patterns_20050129.pdf

    Finally, there is a dedicated server whose purpose is to serve as a
    repository of gEDA symbols and footprints. It's currently empty (it's
    new), but if you create some footprints and want to contribute them to
    the community, you can do so here:

    http://www.gedasymbols.org/

    Stuart
     
  5. Finally, I thought my problem with the diode-footprints to be solved. I used
    the footprint: DIODE_LAY 400.
    Then, I fortunately remarked that the diode footprint is reversed compared
    to the symbol. Instead of a blocking diode, I now have a conducting diode!

    This incident nearly takes all my confidence in gEDA away. If I wouldn't
    have remarked it, my circuit with a couple of very precious ICs would have
    burned away! And I cannot examine the every circuit output before
    soldering. Is there any advice someone could give me? Or should I better
    leave gEDA? I do not want the latter considering all the work I already had
    with gEDA.


    Bernhard
     
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