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Home » CadSoft Support Forums » eagle.userchat.eng » Simple question about editing pads
Simple question about editing pads [message #165845] Sun, 29 May 2016 04:36 Go to next message
Rohan Misra
Messages: 1
Registered: May 2016
Junior Member
I've been trying to edit the spacing/position of the pads on this example .brd file-

http://www.instructables.com/files/orig/FG0/FRGD/I4PHX5J0/FG0FRGDI4PHX5J0.b rd

And though I have accidentally modified the traces plenty of times, I have no way to modify the pads in the center.

So my question is- how can I edit, and more specifically, redimension and move already existing pads in a board file?

--
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Re: Simple question about editing pads [message #165846 is a reply to message #165845] Sun, 29 May 2016 08:34 Go to previous messageGo to next message
Rob Pearce
Messages: 481
Registered: September 2012
Senior Member
On 29/05/16 05:36, Rohan Misra wrote:
> I've been trying to edit the spacing/position of the pads on this example .brd file-
>
> http://www.instructables.com/files/orig/FG0/FRGD/I4PHX5J0/FG0FRGDI4PHX5J0.b rd
>
> And though I have accidentally modified the traces plenty of times, I have no way to modify the pads in the center.
>
> So my question is- how can I edit, and more specifically, redimension and move already existing pads in a board file?
>

Moving and editing pads that are just pads, placed on the board as just
pads, is easy. But that's not what you have. You have a board with two
SOIC-like devices placed on it. They're probably ICs that exist as such
in the schematic. This is, of course, the RIGHT way to do it, and it's
your question that's fundamentally wrong.

I'll assume, for the sake of an example, that what you have are buffer
ICs that are available in SOIC, but that you now want to fit the TSSOP
versions. You're looking at this as "so I need smaller pads, closer
together". That's WRONG. What you need is... TSSOP packages. So the way
you do this, and it's really obvious once you know, is to "CHANGE
PACKAGE" the ICs. Either enter that on the command line or click the
spanner icon and select PACKAGE from the menu. Then click on the little
origin cross in the middle of the IC. You will be offered all the
available packages for that device. Select TSSOP.
Re: Simple question about editing pads [message #165847 is a reply to message #165845] Sun, 29 May 2016 10:28 Go to previous message
Joern Paschedag
Messages: 1450
Registered: August 2008
Senior Member
Am 29.05.2016 um 06:36 schrieb Rohan Misra:
> I've been trying to edit the spacing/position of the pads on this example .brd file-
>
> http://www.instructables.com/files/orig/FG0/FRGD/I4PHX5J0/FG0FRGDI4PHX5J0.b rd
>
> And though I have accidentally modified the traces plenty of times, I have no way to modify the pads in the center.
>
> So my question is- how can I edit, and more specifically, redimension and move already existing pads in a board file?
>
> --
> To view any images and attachments in this post, visit:
> https://www.element14.com/community/message/198221
>

Your parts (devices) in the centre are BLK-MD-SPK-B with a package of
the same name in a library (same name). (I don't know what is is
supposed to be)
Devices one cannot change in schematic or board. They must be edited in
the library, or one must create a new device that fits the suits.
Also a package has a body and a name/value. just check a package in an
eagle library to see what is necessary to make a correct device.

--
Mit freundlichen Grüßen / With best regards

Joern Paschedag
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