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'[EE]: Eagle newbie library question'
2006\02\09@144348 by Rob Robson

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I've just started using Eagle and I'm having difficulty finding generic component layouts in the libraries.  I've downloaded many of the supplementary libraries from the Cadsoft website, but I still haven't found a generic SOIC-8 package I can use for components that have not been defined in the libraries.  Does anyone know where I might find this and other generic SMT packages?

Thanks,
RR  

2006\02\09@145947 by William Bross

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Rob Robson wrote:

>I've just started using Eagle and I'm having difficulty finding generic component layouts in the libraries.  I've downloaded many of the supplementary libraries from the Cadsoft website, but I still haven't found a generic SOIC-8 package I can use for components that have not been defined in the libraries.  Does anyone know where I might find this and other generic SMT packages?
>
>Thanks,
>RR  
>  
>
Rob,

1. Check the smd-ipc under so08.
2. Find a device from another library that uses soic 8 pin and cut and
copy to your new library.
3. Either way, v-e-r-i-f-y any package or symbol with the mfrs. data
sheet to make certain all pin #s are right and pad sizes and locations
are right too.

BB

2006\02\09@151739 by Rob Robson

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> 1. Check the smd-ipc under so08.

Here's a curious thing.  I have smd-ipc in my Libraries folder, but I can't
seem to make it appear in the list that comes up when I select Edit-Add.
I've been able to introduce other new libraries by selecting them with
Library-Use, but smd-ipc still won't appear in the alphabetical list of
libraries under Edit-Add.  What am I doing wrong?

Thx,
RR


2006\02\09@152905 by Pic

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> 1. Check the smd-ipc under so08.
> 2. Find a device from another library that uses soic 8 pin and cut and
> copy to your new library.
> 3. Either way, v-e-r-i-f-y any package or symbol with the mfrs. data
> sheet to make certain all pin #s are right and pad sizes and locations
> are right too.

While we're on the topic, where can I find a library of Pic chips?  The
library that comes with Eagle just has ancient chips and there's nothing
useful on the cadsoft site.


2006\02\09@160305 by Josh Koffman

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On 2/9/06, spam_OUTpicTakeThisOuTspamcanadaspeaks.com <.....picKILLspamspam@spam@canadaspeaks.com> wrote:
> While we're on the topic, where can I find a library of Pic chips?  The
> library that comes with Eagle just has ancient chips and there's nothing
> useful on the cadsoft site.

Head over to Olin's website.

http://www.embedinc.com/pic/

There is a section entitled "Eagle" down towards the bottom.

Josh
--
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completely foolproof is to underestimate the ingenuity of complete
fools.
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2006\02\09@173519 by Rob Robson

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> Here's a curious thing.  I have smd-ipc in my Libraries folder, but I
> can't
> seem to make it appear in the list that comes up when I select Edit-Add.
> I've been able to introduce other new libraries by selecting them with
> Library-Use, but smd-ipc still won't appear in the alphabetical list of
> libraries under Edit-Add.  What am I doing wrong?

The reason for the above symptom seems to be that the smd-ipc library
contains no schematic images - just pcb layouts.

RR


2006\02\10@110124 by alan smith

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Like any software package, there is a learning curve to generating symboles, etc.  Honestly the easiet I have ever used is OrCAD (old version dunno about the new one) and even Mentor is pretty easy.  Eagle isnt bad, once you have done a few and can be tedious on larger parts.  Often you can find the decal already done, and creating the schematic symbol is fairly painless.  Bottom line, at some point, with any package you will have to start generating your own.  And when you do, post them on CadSoft site for others to use as well.  Olin has done a nice job on his libraries, but keep in mind...he did them to fit his needs and still won't have all the parts you might need.
               
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2006\02\10@123755 by Rob Robson

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<snip>
> Bottom line, at some point, with any package you will have to start
> generating your own.  And when you do, post them on CadSoft site for
> others to use as well.  >

Thanks for the good advice.  I've started to create my own devices with the
help of the tutorial I found at
http://myhome.spu.edu/bolding/EE4211/EagleTutorial4.htm.  It's a relatively
painless process, even for a somewhat dyslexic newbie.  Once I'm confident
in the reliability of the results, I'll gladly contribute them to the
(surprisingly patchy) offerings on the CadSoft site.

RR


2006\02\10@130920 by David VanHorn

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On 2/10/06, alan smith <micro_eng2spamKILLspamyahoo.com> wrote:
>
> Like any software package, there is a learning curve to generating
> symboles, etc.  Honestly the easiet I have ever used is OrCAD (old version
> dunno about the new one)


I moderate the old dos orcad group on yahoogroups.
We even have new video drivers! :)

2006\02\10@145600 by alan smith

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well....I moved to Eagle, after deciding that even tho I really love OrCAD, I needed something that was a little more state of the art, since mine was a DOS version and sometimes DOS app's do not play well with WinXP.  And even our really expensive Mentor package has issues, so I am not really disapointed in Eagle, but for my consulting work, it works quite well.

David VanHorn <.....dvanhornKILLspamspam.....microbrix.com> wrote:  On 2/10/06, alan smith wrote:
>
> Like any software package, there is a learning curve to generating
> symboles, etc. Honestly the easiet I have ever used is OrCAD (old version
> dunno about the new one)


I moderate the old dos orcad group on yahoogroups.
We even have new video drivers! :)

2006\02\10@150916 by Wayne Topa

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Rob Robson(EraseMErobspam_OUTspamTakeThisOuTsilk.net) is reported to have said:
> <snip>
> > Bottom line, at some point, with any package you will have to start
> > generating your own.  And when you do, post them on CadSoft site for
> > others to use as well.  >
>
> Thanks for the good advice.  I've started to create my own devices with the
> help of the tutorial I found at
> http://myhome.spu.edu/bolding/EE4211/EagleTutorial4.htm.  It's a relatively
> painless process, even for a somewhat dyslexic newbie.  Once I'm confident
> in the reliability of the results, I'll gladly contribute them to the
> (surprisingly patchy) offerings on the CadSoft site.

Here is another that might be of interest.
<http://vulcan.ece.ucsb.edu/ece189/tutorials.html>

Wayne
--
You have a tendency to feel you are superior to most computers
_______________________________________________________

2006\02\10@183631 by Jinx

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It's useful to keep a trace calculator handy too, eg

circuitcalculator.com/wordpress/2006/01/31/pcb-trace-width-calculator
/

When drawing parts for a library it's important to know what
width traces are likely to be connected to it, particularly power
components like relays, switches and connectors that need to
carry more than signal currents. Then later, when the part is
placed on the board, you can use the restrict layers to keep
low current/low voltage lines (like relay coil traces) out of the
high current/high voltage areas


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