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PCB edge connectors

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4件のコメント

  • Brad Levy

    There are many styles of documenting card edge connections.
    One is to just use a rectangle with the pin on two sides. This is easy to create using the schematic symbol wizard.
    Or you may want one that looks visually more like edge connector pads. There are some (single row) ones like this in the DesignSpark.ssl library that is installed with the program. I copied the 20-pin version of one of these to a new symbol. I then moved pins 11-20 to a second column, the used the keyboard shortcut F to flip those pins left to right.

    Next I selected each pin in turn and edited the properties, changing the pad number, to match the even-on-one-side, odd-on-the-other, convention of the matching edge connector. I moved the reference designator position to the top of the symbol, and saved the symbol. Here is what it looks like:

    The N1 thru N20 will take on the pin names you assign the pins when you create a component combining the schematic symbol and a PCB symbol. That process includes filling in a table mapping schematic symbol pins to PCB symbol pins.
    (You can use the component creation wizard to help define the component.)

    I saved the schematic symbol (2x10CardEdgeOdEv) to a library Cardedge.ssl, and put it in a zip file which you can download from http://www.bradlevy.com/software/designspark/Cardedge.zip .

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  • David Goodell

    Thank you for the help. As of yet I have not been able to add your .ssl file. I don't know how. I am not well versed on using libraries etc. I'll keep reading...

     

    David G

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  • Brad Levy

    It is a little hard to know just where you are on the learning curve.

    Do you understand the relationship between schematic symbols, PCB symbols, and Components in DS PCB?
    (In a nutshell, the only thing you can actually add to a schematic or PCB is a Component. Components combine a schematic symbol and/or a PCB symbol with other information, like the mapping between schematic symbol pins and PCB symbol pads, part number(s), height, data sheet links, etc.)

    Library items you create go by default into (if I remember right) the
    C:\Users\Public\Documents\DesignSpark PCB 8.1\Library\User directory (folder),
    (except instead of 8.1, it will be version number of DS PCB you currently have installed).
    I think the library names for those also defaults to User.ssl, User.psl, and User.cml for the schematic symbols, PCB symbols, and Components libraries respectively.
    (You can choose different ones if you want.)

    If you have libraries like the card Cardedge.ssl I posted the link to, you can put them (after extracting from the .zip file, in this case) in the same User directory I mentioned above. You can leave them there in their own library, or you can select an existing user library and then click the Add File... button, select the downloaded library as the source, and it will add those symbols or components into your library.

    If you don't already have a user.ssl library, you could create a simple rectangle-with pins-down-both-sides schematic symbol for the card edge using the wizard on the Schematic Symbols tab of the library manager, and I believe the wizard will create the User.ssl library for you.

    Once you have the schematic symbol in a library in the ...\Library\User folder, you can use the wizard on the Components tab of the library manager to create a component linking the schematic symbol and the PCB symbol which you already created.

    The built-in Help file (Help > Contents or Help > Context Help from the menu) and the online tutorials (Help > Tutorials from the DS PCB menu) have more info and videos of the library  editing process.

     

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  • David Goodell

    First, I want to thank you for your help. With your input and watching tutorials I was able add your schematic symbol file to my component. I need more practice but I have the basic concept, I think. Thank you for your help.

     

    Is there a way to change the direction of the mouse wheel zoom?  I is opposite form other programs I use. Also, the mouse wheel zoom increment per step is too large. Is there a way to change this. I have not found any information about this yet...

     

     

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