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EAGLE User Chat (English) Off board components
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Related

Off board components

Former Member
Former Member over 15 years ago

I've been working my way through all the example projects I found on the

Cadsoft site, wow... They are useful.

 

Because I want to develop good habits from  the start and I'm trying very

hard to unlearn some very awkward techniques I bring from the "other"

commercial software I was using, so I really appreciate any advice you can

give me.

 

I want to show off PCB components on the schematic, like a panel mounted

pot, or switch, or jack because I want them to be included in the bill of

materials.

 

So, what is the preferred method to do this? I see most just leave them off

the schematic and use a connector or pads for the off board stuff.

 

In the "other" software, I created some panel components that just had pads

for the PCB package. It worked OK.

 

Are there already some "off board" components like this? I've tried every

keyword I could think of to search the libraries, but no luck yet.

 

Thanks for you patience with a new user.

 

David

 

--

Browser access to CadSoft Support Forums at http://www.eaglecentral.ca

 

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  • autodeskguest
    autodeskguest over 15 years ago

    dingebre wrote on Sun, 28 February 2010 05:03

    I want to show off PCB components on the schematic, like a panel

    mounted pot, or switch, or jack because I want them to be included in the

    bill of materials.

     

    You have to be consistent with what a BOM is for and what a "board" means.

    In any place I've worked with, you wouldn't want a panel mount switch on

    the same BOM as that of the board.  The board needs pads or a connector for

    the switch wires, so that is shown on the schematic and goes on the BOM for

    the board.  The switch goes on the BOM of another assembly.  Then the

    larger unit is another assembly that shows the board and the switch with

    cable installed onto the board as subassemblies.

     

    You can put a comment in the schematic explaining what is intended to be

    connected to the pads or connector that is on the board, but that's as far

    as it goes and should go.  Think tree structure.

    --

    Browser access to CadSoft Support Forums at http://www.eaglecentral.ca

     

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  • autodeskguest
    autodeskguest over 15 years ago

     

    "David Ingebretsen" <dingebre@3dphysics.net> wrote in message

    news:hmdf0t$haa$1@cheetah.cadsoft.de...

    I've been working my way through all the example projects I found on the

    Cadsoft site, wow... They are useful.

     

    Because I want to develop good habits from  the start and I'm trying very

    hard to unlearn some very awkward techniques I bring from the "other"

    commercial software I was using, so I really appreciate any advice you can

    give me.

     

    I want to show off PCB components on the schematic, like a panel mounted

    pot, or switch, or jack because I want them to be included in the bill of

    materials.

     

    So, what is the preferred method to do this? I see most just leave them

    off

    the schematic and use a connector or pads for the off board stuff.

     

    In the "other" software, I created some panel components that just had

    pads

    for the PCB package. It worked OK.

     

    Are there already some "off board" components like this? I've tried every

    keyword I could think of to search the libraries, but no luck yet.

     

    Thanks for you patience with a new user.

     

    David

     

     

    Hi David,

     

    you can do that if you want to by drawing your own symbol that come without

    any pins. Ok, the symbol should look like it has some, but from eagle

    perspective, it doesn't. That enables you to generate devices without the

    need of packages. But you can't use the standard net command to make

    connections. By choosing special reference designators, you can easily

    separate these parts from the rest of the bom.

     

    Regards,

    Carsten

     

     

     

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  • autodeskguest
    autodeskguest over 15 years ago

    On 2/28/2010 9:21 AM, Olin Lathrop wrote:

    dingebre wrote on Sun, 28 February 2010 05:03

    I want to show off PCB components on the schematic, like a panel

    mounted pot, or switch, or jack because I want them to be included in the

    bill of materials.

     

    You have to be consistent with what a BOM is for and what a "board"

    means. In any place I've worked with, you wouldn't want a panel mount

    switch on

    the same BOM as that of the board. The board needs pads or a connector for

    the switch wires, so that is shown on the schematic and goes on the BOM for

    the board. The switch goes on the BOM of another assembly. Then the

    larger unit is another assembly that shows the board and the switch with

    cable installed onto the board as subassemblies.

     

    You can put a comment in the schematic explaining what is intended to be

    connected to the pads or connector that is on the board, but that's as far

    as it goes and should go. Think tree structure.

     

    Olin, in large work environments, that's the way it should be. However

    for someone who does smallish projects and assembly, or does it all

    themselves, it's helpful to integrate into the board's BOM so that you

    don't forget to order those parts.

     

    Also, for someone like me who changes things fairly often to support new

    features on a board, it would be hard to manage multiple sets of parts

    lists for multiple devices each with multiple versions... To stay sane,

    I have to keep it in the schematics. I actually made a part that's

    nothing but a value-label so I can "create" those things I need just by

    putting in it's part number as the value. Crude but fast and effective.

     

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  • Former Member
    Former Member over 15 years ago

    Carsten Wille wrote on Sun, 28 February 2010 09:48

    "David Ingebretsen" <dingebre@3dphysics.net[/email]> wrote in message

    news:hmdf0t$haa$1@cheetah.cadsoft.de...[/email]

    I've been working my way through all the example projects I found

    on the

    Cadsoft site, wow... They are useful.

     

    Because I want to develop good habits from  the start and I'm

    trying very

    hard to unlearn some very awkward techniques I bring from the

    "other"

    commercial software I was using, so I really appreciate any advice

    you can

    give me.

     

    I want to show off PCB components on the schematic, like a panel

    mounted

    pot, or switch, or jack because I want them to be included in the

    bill of

    materials.

     

    So, what is the preferred method to do this? I see most just leave

    them

    off

    the schematic and use a connector or pads for the off board stuff.

     

    In the "other" software, I created some panel components that just

    had

    pads

    for the PCB package. It worked OK.

     

    Are there already some "off board" components like this? I've tried

    every

    keyword I could think of to search the libraries, but no luck yet.

     

    Thanks for you patience with a new user.

     

    David

     

     

    Hi David,

     

    you can do that if you want to by drawing your own symbol that come

    without

    any pins. Ok, the symbol should look like it has some, but from eagle

    perspective, it doesn't. That enables you to generate devices without

    the

    need of packages. But you can't use the standard net command to make

    connections. By choosing special reference designators, you can easily

     

    separate these parts from the rest of the bom.

     

    Regards,

    Carsten

     

     

     

    Thanks Carsten,

     

    Carsten, That's an excellent way to do it and combine the on and off board

    parts in one schematic.

     

     

    --

    Browser access to CadSoft Support Forums at http://www.eaglecentral.ca

     

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  • Former Member
    Former Member over 15 years ago

    Olin wrote on Sun, 28 February 2010 07:21

    dingebre wrote on Sun, 28 February 2010 05:03

    I want to show off PCB components on the schematic, like a panel

    mounted pot, or switch, or jack because I want them to be included in

    the bill of materials.

     

    You have to be consistent with what a BOM is for and what a "board"

    means.  In any place I've worked with, you wouldn't want a panel mount

    switch on the same BOM as that of the board.  The board needs pads or a

    connector for the switch wires, so that is shown on the schematic and

    goes on the BOM for the board.  The switch goes on the BOM of another

    assembly.  Then the larger unit is another assembly that shows the board

    and the switch with cable installed onto the board as subassemblies.

     

    You can put a comment in the schematic explaining what is intended to

    be connected to the pads or connector that is on the board, but that's as

    far as it goes and should go.  Think tree structure.

     

     

    Thanks Olin,

     

    I agree with your comments for the circumstances you cite. The difference

    for me is I am doing this for my own personal use and maybe to share with

    others who have the same hobby (DIY synthesizers) (similar to the situation

    Travis describes). In that community, it is typical to include "off board"

    components on the schematic somewhere.

     

    However, in a "tree" frame of mind (good advice) I could do the board in

    one schematic, use pads or connectors, then do a sceond schematic only that

    shows the pot/jack/switch connections. Both schematics can be part of the

    same project. Thanks

    --

    Browser access to CadSoft Support Forums at http://www.eaglecentral.ca

     

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  • Former Member
    Former Member over 15 years ago

    Travis G wrote on Sun, 28 February 2010 11:45

    On 2/28/2010 9:21 AM, Olin Lathrop wrote:

    dingebre wrote on Sun, 28 February 2010 05:03

    I want to show off PCB components on the schematic, like a panel

    mounted pot, or switch, or jack because I want them to be included

    in the

    bill of materials.

     

    You have to be consistent with what a BOM is for and what a

    "board"

    means. In any place I've worked with, you wouldn't want a panel

    mount

    switch on

    the same BOM as that of the board. The board needs pads or a

    connector for

    the switch wires, so that is shown on the schematic and goes on the

    BOM for

    the board. The switch goes on the BOM of another assembly. Then

    the

    larger unit is another assembly that shows the board and the switch

    with

    cable installed onto the board as subassemblies.

     

    You can put a comment in the schematic explaining what is intended

    to be

    connected to the pads or connector that is on the board, but that's

    as far

    as it goes and should go. Think tree structure.

     

    Olin, in large work environments, that's the way it should be. However

     

    for someone who does smallish projects and assembly, or does it all

    themselves, it's helpful to integrate into the board's BOM so that you

     

    don't forget to order those parts.

     

    Also, for someone like me who changes things fairly often to support

    new

    features on a board, it would be hard to manage multiple sets of parts

     

    lists for multiple devices each with multiple versions... To stay sane,

     

    I have to keep it in the schematics. I actually made a part that's

    nothing but a value-label so I can "create" those things I need just by

     

    putting in it's part number as the value. Crude but fast and effective.

     

     

    Interesting comment Travis. Thanks

     

    David

    --

    Browser access to CadSoft Support Forums at http://www.eaglecentral.ca

     

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  • autodeskguest
    autodeskguest over 15 years ago

     

    Interesting comment Travis. Thanks

     

    David

     

    One problem is that most of the BOM creation script will not export

    those parts because they have no package. So, you can either create a

    package with no nothing in it to use as a placeholder, or, what I did

    was modify the ULP.

     

    The modification does create the possibility of schematic parts such as

    Vcc and GND being included in the BOM under certain situations, but

    that's easy to post-process or modify the ulp to exclude in the future.

    If you want my modified version, let me know.

     

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  • Former Member
    Former Member over 15 years ago

    Travis G wrote on Sun, 28 February 2010 12:12

     

    Interesting comment Travis. Thanks

     

    David

     

    One problem is that most of the BOM creation script will not export

    those parts because they have no package. So, you can either create a

    package with no nothing in it to use as a placeholder, or, what I did

    was modify the ULP.

     

    The modification does create the possibility of schematic parts such as

     

    Vcc and GND being included in the BOM under certain situations, but

    that's easy to post-process or modify the ulp to exclude in the future.

     

    If you want my modified version, let me know.

     

     

     

    Thank you Travis. I'd love the modified ULP. I've got enough to learn just

    using Eagle. I haven't written a line of C or C++ for 20 years. I'm saving

    ULP creation for down the road... image

     

    David

     

    email: mailto:dingebre@3dphysics.net

    web: www.CFandE.com   - work

    web: www.xmission.com/~dingebre    - hobby

    --

    Browser access to CadSoft Support Forums at http://www.eaglecentral.ca

     

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  • autodeskguest
    autodeskguest over 15 years ago

    Thank you Travis. I'd love the modified ULP. I've got enough to learn just

    using Eagle. I haven't written a line of C or C++ for 20 years. I'm saving

    ULP creation for down the road... image

     

    David

     

    email: mailto:dingebre@3dphysics.net

    web: www.CFandE.com - work

    web: www.xmission.com/~dingebre - hobby

     

    Here you go. The modifications are minor. Search TG in the ULP to find

    my modifications and where to add your own if you decide to exclude

    other symbols from the BOM.

     

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  • Former Member
    Former Member over 15 years ago

    Travis G wrote on Mon, 01 March 2010 10:13

    #usage "<b>Bill Of Material</b><p>\n"

    "Generates a board's Bill Of Material.<p>\n"

     

      deleted to avoid clutter...

     

     

     

    Thanks Travis. Works like a charm.

     

    David

    --

    Browser access to CadSoft Support Forums at http://www.eaglecentral.ca

     

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