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EAGLE User Support (English) Trying to create a circular shaped PCB
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Related

Trying to create a circular shaped PCB

tomshong
tomshong over 13 years ago

Hi all,

I am a newbie to EagleCad. I am using 6.2.0 Lite version.

 

I am trying to build a PCB around a CR-2325 battery holder similar to one shown in the link.

 

http://shop.vetcosurplus.com/catalog/images/PH-BH2038-1.jpg

 

Here are the problems I got

  1. How do I place the component on the layout such that the part will go on the ‘bottom’ layer of the PCB?
  2. How do I create a circular PCB? I’d like to make my PCB slightly bigger but about the same shape as the battery holder shown.

 

Tom

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  • dukepro
    0 dukepro over 13 years ago

    On 07/18/2012 10:09 PM, Tom Hong wrote:

    Hi all, I am a newbie to EagleCad. I am using 6.2.0 Lite version.

     

    I am trying to build a PCB around a CR-2325 battery holder similar to

    one shown in the link.

     

    http://shop.vetcosurplus.com/catalog/images/PH-BH2038-1.jpg

     

    Here are the problems I got 1. How do I place the component on the

    layout such that the part will go on the ‘bottom’ layer of the PCB?

     

    Mirror the component.

     

    2. How do I create a circular PCB? I’d like to make my PCB slightly

    bigger but about the same shape as the battery holder shown.

     

    Delete the rectangular board outline from the Dimension layer and

    replace it with a circle.

     

    Enjoy,

        - Chuck

     

     

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  • dukepro
    0 dukepro over 13 years ago in reply to dukepro

    On 07/19/2012 07:42 AM, Chuck Huber wrote:

    On 07/18/2012 10:09 PM, Tom Hong wrote:

    ...

    >> 2. How do I create a circular PCB? I’d like to make my PCB slightly

    >> bigger but about the same shape as the battery holder shown.

     

    Delete the rectangular board outline from the Dimension layer and

    replace it with a circle.

     

    I might add that if you make the line width of the circle zero, it will

    fill in, which is NOT what you want.  Instead, make the line width some

    arbitrarily small value, like 1 mil, or 0.1mm.

     

    HTH

        - Chuck

     

     

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  • Former Member
    0 Former Member over 12 years ago in reply to dukepro

    Chuck Huber wrote:

    >On 07/19/2012 07:42 AM, Chuck Huber wrote:

    >> On 07/18/2012 10:09 PM, Tom Hong wrote:

    >...

    >>> 2. How do I create a circular PCB? I’d like to make my PCB slightly

    >>> bigger but about the same shape as the battery holder shown.

    >>

    >> Delete the rectangular board outline from the Dimension layer and

    >> replace it with a circle.

    >I might add that if you make the line width of the circle zero, it will

    >fill in, which is NOT what you want.  Instead, make the line width some

    >arbitrarily small value, like 1 mil, or 0.1mm.

     

    or use the wire command with curve or radius options to draw two 180°

    arcs

     

         wire (x1 y1) +180 (x2 y2) +180 (x1 y1);

     

    where +180 defines the angle between arc start and end point.

    --

     

    Lorenz

     

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  • tomshong
    0 tomshong over 12 years ago in reply to Former Member

    Thanks.

     

    Can you elaborate on how to layout PCB viewed from the other side? I can create a custom library part that's mirrored to the original dimension, but how do I tell EagleCAD that I want it to be on the 'bottom' layer?

     

    I tried your suggestion for 2) and I think I am good on that one. image

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  • Former Member
    0 Former Member over 12 years ago in reply to tomshong

    Tom Hong wrote:

     

    Thanks.

     

    Can you elaborate on how to layout PCB viewed from the other side? I can

    create a custom library part that's mirrored to the original dimension,

    but how do I tell EagleCAD that I want it to be on the 'bottom' layer?

     

    I tried your suggestion for 2) and I think I am good on that one. image

     

    No need for a custom library part. Chuck gave you the answer in hist first

    post: just place the part, then use the Mirror command/icon to flip the part

    over to the bottom layer.

     

    I hope this is a circuit board you intend to route out yourself, because

    just about every board house I know is going to charge you a fortune for

    milling round boards, particularly when they're that small.

     

     

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  • tomshong
    0 tomshong over 12 years ago in reply to Former Member

    Thanks.

     

    does the EagleCad know the part is suppose to go on the bottom layer just by 'flipping/mirror' it?

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  • Former Member
    0 Former Member over 12 years ago in reply to tomshong

    On 7/21/2012 6:03 PM, Tom Hong wrote:

    Thanks.

     

    does the EagleCad know it's suppose be on the bottom layer just by 'flipping/mirror' it?

     

    Thats the point of the mirror command.   If you take an smt component

    and mirror it,  then turn off the display of the top layer you will find

    that all the pads for the component are still visible because its now on

    the bottom layer.    You will see that all the associated text (value,

    name) have also been mirrored.

     

    Jim

     

     

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