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Have a question about CadSoft EAGLE?  Ask our Expert, Richard! (Archive)

nlarson

This thread is now locked - but you can still ask Richard by posting your questions here.  If you'd rather browse other member's questions you can read the CadSoft EAGLE Forums for past questions and answers. Enjoy!

 

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Richard Hammerl

Richard is an engineer with 16 years experience in EAGLE customer support and is waiting for your questions.

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  • Richard,

     

    I am new to Eagle and have a couple of questions.

     

    1) How do I copy a package from one library to another so I don't have to create them from scratch every time?

    2) Can I make split power planes during layout?

     

    Mike

  • in reply to e14 Contributor

    Hi,

    Here is a Short Video of using Drag & Drop to copy components between libraries.

     

  • in reply to e14 Contributor

    Hi, i need help about DRC rules. I prepare my circuits by using some hobby electronic techniques. And I'm using ofcourse eagle to draw them. However, when I change the DRC rules, especially the RESTRING option it changes the dimensions of all the component pads. And these are not equally the same for all of them. For example, the IC pads becomes much bigger than a resistor pad. And this is my problem. Is there any way to change only ressitor and capacitor pads. I know i can put extra via pads from the main BOARD window.

     

    Thank you, regards. Ahmet.

  • in reply to e14 Contributor

    Hi Jamie,

     

    the numbers 2,54/0,8 want to tell you that die drill diameter is 0.8mm (~32mil) and the diameter of the pad

    is 2.54mm (100mil). If you want to use smaller diameters you could change one of the packages there or define a new one with a smaller drill diameter.

     

    Regards,

    Richard

  • in reply to Richard_H

    Hi Richard,

     

    I think that you may have miss read what I am trying to achieve.  The pad is to connect a 22 gauge wire to the PCB.

     

    Cheers,

    Jamie

  • in reply to e14 Contributor

    Hi again,

     

    you could define the pad diameter for the resistors in the library first, save the library file and use Library/Update in the Layout/Editor. So the resistors will be updated with the packages with bigger pads.

     

    Regards,

    Richard

  • in reply to Richard_H

    Hi Richard,

     

    Sorry not so much image Settings for this circuit, now I am working on, is in this picture

     

    http://img576.imageshack.us/i/drc.png/

     

    I didn't decide on this values by some calculations, just tried and decide on whether the result is what i am looking for. And for this values the IC pads are ok. However pads for resistors and capacitors are not big enough for me. Because of this i am looking for a way to make bigger only some pads (resistor and capacitor pads).

     

    Meanwhile, select option on the DRC main window, for what i can use it? It is not similiar to rooting select option.

     

    I hope I'm much clearer now image

     

    Thanks Ahmet.

  • in reply to e14 Contributor

    Hello Ahmet,

     

    the restring settings are valid for all pads in the layout. What are the settings you are using for your pads.

    The width of the copper ring around the drilling is calculated in dependence of the drill diameter. But you can use equal values for minimum and maximum value, so that the width of  copper ring is always the same.

     

    Maybe this helps?

    Regards

    Richard

Reply
  • in reply to e14 Contributor

    Hello Ahmet,

     

    the restring settings are valid for all pads in the layout. What are the settings you are using for your pads.

    The width of the copper ring around the drilling is calculated in dependence of the drill diameter. But you can use equal values for minimum and maximum value, so that the width of  copper ring is always the same.

     

    Maybe this helps?

    Regards

    Richard

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