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'[EE]: My first PCB'
2003\06\12@112525 by Marc Nicholas

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So, I'm just about ready to have my first PCB made for a small sensor
product that I'll be selling from my personal website.

I've read everything on the Olimex website, and think that I've got an
understanding of what they expect and some common pitfalls. (My board is
tiny, so I'm panellizing and have read their comments on that).

Anyone else got any tips or experience with Olimex that they'd like to
share? Y'know, the sort of thing like "oh, if Olimex are running your
boards, do this and don't do that".

Also, as it's my first PCB and I'm a little bit strange at the best of
times...I was thinking about maybe putting my unique mark on the PCB in
someway. Maybe just something funny written on it like "Proudly made in
Canada, eh?". Or a shout poem. Or a picture in the silkscreen/soldermask
(Sun Microsystems used to put pictures on their early system PCBs!). Anyone
want to talk me out of that? :-)

TIA.


-marc

--------------------------------------------------
Marc Nicholas Geekythings Inc. C/416.543.4896
UNIX, Database, Security and Networking Consulting

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2003\06\12@113603 by Martin Baker

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At 11:25 AM 6/12/03 -0400, you wrote:
>  Maybe just something funny written on it like "Proudly made in
>Canada, eh?". Or a shout poem. Or a picture in the silkscreen/soldermask
>(Sun Microsystems used to put pictures on their early system PCBs!). Anyone
>want to talk me out of that? :-)



No. Have at it.


{Quote hidden}

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2003\06\12@115359 by Tal

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This is not Olimex specific info but here it is just in case.

You want to include the board model/revision, copyright notice, your
company name, and possibly some contact info (e.g. a short URL).

All the 'funny' stuff will give a non professional impression of
somebody that just made his first board ;-)

I am not sure what the 'penalizing' is but did you considered panelizing
your order such that each 'board' actually include multiple boards that
you later cut yourself (remember to include silk screen or copper guides
that will help you to cut the board).

Tal





> {Original Message removed}

2003\06\12@120022 by Spehro Pefhany

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At 08:34 AM 6/12/2003 -0700, you wrote:
>At 11:25 AM 6/12/03 -0400, you wrote:
>>  Maybe just something funny written on it like "Proudly made in
>>Canada, eh?". Or a shout poem. Or a picture in the silkscreen/soldermask
>>(Sun Microsystems used to put pictures on their early system PCBs!). Anyone
>>want to talk me out of that? :-)
>
>No. Have at it.

It took quite a bit of time to get my logo into a form where it can be
added onto boards, but it only needed to be done once. I miss one thing
from using Autocad to design boards, and that's the ability to use
arbitrary fonts. Ah well.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
spam_OUTspeffTakeThisOuTspaminterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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2003\06\12@123538 by Marc Nicholas

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On 12/6/03 11:53, "Tal" <.....talKILLspamspam@spam@ZAPTA.COM> wrote:

> You want to include the board model/revision, copyright notice, your
> company name, and possibly some contact info (e.g. a short URL).

Yeah, I was definitely going to include a revision number, URL, and a
copyright notice.

> All the 'funny' stuff will give a non professional impression of
> somebody that just made his first board ;-)

Ah, but it's only semi-commercial, so I thought I'd have some fun ;-)

> I am not sure what the 'penalizing' is but did you considered panelizing
> your order such that each 'board' actually include multiple boards that
> you later cut yourself (remember to include silk screen or copper guides
> that will help you to cut the board).

I wrote "panellizing" not "penalizing". :-p I believe Olimex 'de-panellize'
boards for free as long as boundaries are proper and as long as cuts are
straight (i.e. All boards have to be square or rectangular). I hate cutting
PCBs, so I hope I'm right ;-

Thanks,

-marc

--------------------------------------------------
Marc Nicholas Geekythings Inc. C/416.543.4896
UNIX, Database, Security and Networking Consulting

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2003\06\12@125441 by Picdude

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On Thursday 12 June 2003 10:25, Marc Nicholas scribbled:
> Also, as it's my first PCB and I'm a little bit strange at the best of
> times...I was thinking about maybe putting my unique mark on the PCB in
> someway. Maybe just something funny written on it like "Proudly made in
> Canada, eh?".

Except that it wouldn't be made in Canada, would it?  The board would be made in Europe.  You mentioned "sensor", which is probably made in Asia somewhere.  If there's a PIC in it, that would be Malaysia or Thailand I believe.  Resistors? ... Japan.  Maybe you'll assemble it in Canada, but are *you* even made in Canada ?  :-)

So how about "Proudly made on earth".

Cheers,
-Neil.

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2003\06\12@125614 by Mike Harrison

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On Thu, 12 Jun 2003 12:35:22 -0400, you wrote:

{Quote hidden}

For small panels, you DO NOT want the PCB house to depanellise them. It's a LOT easier to assemble
(and often test) small PCBs in sheets of several at a time, then snap them out afterwards. You need to set your panel up so you have breakout tabs in places that won't cause a problem after
breakout, but will provide enough support for assembly.

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2003\06\12@130245 by Spehro Pefhany

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At 05:52 PM 6/12/2003 +0100, you wrote:
{Quote hidden}

You lose some PCB area that way. V-groove works nicely, smooth edges
with minimal loss of area, but costs a bit more.

Academic in this case, on all points, as the boards will be sheared,
not routed, so depanelization is the only realistic route.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
EraseMEspeffspam_OUTspamTakeThisOuTinterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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2003\06\12@130445 by Picdude

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On Thursday 12 June 2003 11:52, Mike Harrison scribbled:

> For small panels, you DO NOT want the PCB house to depanellise them. It's a
> LOT easier to assemble (and often test) small PCBs in sheets of several at
> a time, then snap them out afterwards. You need to set your panel up so you
> have breakout tabs in places that won't cause a problem after breakout, but
> will provide enough support for assembly.

Good point, and if tab-routing costs more, then you panelize them with your layout SW, and place rows of holes all over the board where they need to be snapped apart.  Sort of like "perforations".

Personally, I would just use .032 thickness board and cut them easily with a pair of scissors.

Cheers,
-Neil.

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2003\06\12@130652 by Spehro Pefhany

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At 11:53 AM 6/12/2003 -0500, you wrote:
>On Thursday 12 June 2003 10:25, Marc Nicholas scribbled:
> > Also, as it's my first PCB and I'm a little bit strange at the best of
> > times...I was thinking about maybe putting my unique mark on the PCB in
> > someway. Maybe just something funny written on it like "Proudly made in
> > Canada, eh?".
>
>Except that it wouldn't be made in Canada, would it?  The board would be made
>in Europe.

This is an issue with offshore boards. Technically, the board is a "printed"
product in some countries and falls under the draconian country of origin
marking rules that require the country of origin of the BOARD to be marked
on it. You may not wish your product to have a part that says "Made in
Elbonia" when the board and the rest of the product is assembled domestically.
OTOH, having a shipment of boards held at customs because of misleading
country of origin markings could ruin your whole week.

Don't worry about it for a few prototype boards, however.

>  You mentioned "sensor", which is probably made in Asia somewhere.
>If there's a PIC in it, that would be Malaysia or Thailand I believe.
>Resistors? ... Japan.  Maybe you'll assemble it in Canada, but are *you* even
>made in Canada ?  :-)

Are we thinking vacation?

>So how about "Proudly made on earth".

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speffspamspam_OUTinterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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2003\06\12@133437 by Mike Harrison

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On Thu, 12 Jun 2003 12:03:57 -0500, you wrote:

>On Thursday 12 June 2003 11:52, Mike Harrison scribbled:
>
>> For small panels, you DO NOT want the PCB house to depanellise them. It's a
>> LOT easier to assemble (and often test) small PCBs in sheets of several at
>> a time, then snap them out afterwards. You need to set your panel up so you
>> have breakout tabs in places that won't cause a problem after breakout, but
>> will provide enough support for assembly.
>
>Good point, and if tab-routing costs more, then you panelize them with your
>layout SW, and place rows of holes all over the board where they need to be
>snapped apart.  Sort of like "perforations".
>
>Personally, I would just use .032 thickness board and cut them easily with a
>pair of scissors.
This can work well for some PCBs, but the flexibility means that it can be hard to hold it rigidly
in an assembly jig, You also need to think about assembly order to ensure you can cut the PCBs out
easily.
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2003\06\12@134514 by Marc Nicholas

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On 12/6/03 13:08, "Spehro Pefhany" <@spam@speffKILLspamspamINTERLOG.COM> wrote:

> This is an issue with offshore boards. Technically, the board is a "printed"
> product in some countries and falls under the draconian country of origin
> marking rules that require the country of origin of the BOARD to be marked
> on it. You may not wish your product to have a part that says "Made in
> Elbonia" when the board and the rest of the product is assembled domestically.
> OTOH, having a shipment of boards held at customs because of misleading
> country of origin markings could ruin your whole week.

Do you happen to know the rules in Canada? (I'm guessing you're in Toronto
based on your email address).

> Don't worry about it for a few prototype boards, however.

I wasn't ;-)

-marc

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Marc Nicholas Geekythings Inc. C/416.543.4896
UNIX, Database, Security and Networking Consulting

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2003\06\12@134657 by Marc Nicholas

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On 12/6/03 12:53, "Picdude" <KILLspampicdudeKILLspamspamNARWANI.ORG> wrote:

> Except that it wouldn't be made in Canada, would it?  The board would be made
> in Europe.  You mentioned "sensor", which is probably made in Asia somewhere.
> If there's a PIC in it, that would be Malaysia or Thailand I believe.
> Resistors? ... Japan.  Maybe you'll assemble it in Canada, but are *you* even
> made in Canada ?  :-)

I was assembled in South Africa from Welsh parts ;-)

Believe it or not, all the 'clever' stuff on this board is fab'd in the US
of A!

-marc


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Marc Nicholas Geekythings Inc. C/416.543.4896
UNIX, Database, Security and Networking Consulting

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2003\06\12@140548 by Picdude

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So there you have it.  I say put a small statement like "Woo-hoo!  I can't believe it works!", or "In case of problems, pray harder!".
:-)

Cheers,
-Neil.



On Thursday 12 June 2003 12:46, Marc Nicholas scribbled:
{Quote hidden}

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2003\06\12@141215 by Ben Jackson

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On Thu, Jun 12, 2003 at 11:25:33AM -0400, Marc Nicholas wrote:
> I've read everything on the Olimex website, and think that I've got an
> understanding of what they expect and some common pitfalls.

Great, now you only have to overcome the undocumented pitfalls.  ;-)

I went several rounds with them on a board, trying to satisfy their
solder mask requirements in Eagle.  It turns out that their script
(and the requirements!) are a little wacky, but it is possible to
supply .BRD files to them if that's what you want to do.  I did finally
make an acceptable .BRD and get a PO from them, but while waiting for
that last reply (over a weekend) I redesigned the board so I could etch
it myself at home...

Anyway, if someone needs to run SILKWIDTH.ULP, contact me and I can
send you my modified copy and give you some pointers for running it.

--
Ben Jackson
<spamBeGonebenspamBeGonespamben.com>
http://www.ben.com/

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2003\06\12@154033 by Dave King

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Marc

Have you talked to Crimp Circuits in your neighborhood ie TO ?
They handled my Eagle generated gerber files without any problems
other than I had to manually do the drill (ncd).

There price was cheaper than about 65 other quotes I had and matched
a couple of offshore board houses. Enough cheaper I ordered 100 boards
 instead of 20. I also didn't have to pay PST or hassle with customs.

Check them out you might be surprised how much cheaper they are by the
time you add in the shipping,  then pst,gst (customs) to your Olimex pricing

Dave

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2003\06\12@170101 by Mike Singer

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Marc Nicholas wrote:
> I was assembled in South Africa from Welsh parts ;-)

Women is a sometimes thing.
(From "Porgy and Bess")

Mike.

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2003\06\12@173049 by Philip Pemberton

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In message <TakeThisOuT200306121153.27442.picdudeEraseMEspamspam_OUTnarwani.org>>          Picdude <RemoveMEpicdudespamTakeThisOuTNARWANI.ORG> wrote:

> If there's a PIC in it, that would be Malaysia or Thailand I believe.
I thought Microchip's wafer fab plants were company-owned. The last time I
checked, they had two - one in Chandler, Arizona, the other in Tempe,
Arizona. Excuse me if I spelled the names wrong - my knowledge of US states
and cities is sub-par at best (that's what I get for being British, I
suppose).

Later.
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Phil.
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2003\06\12@173923 by Spehro Pefhany

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At 10:27 PM 6/12/2003 +0100, you wrote:
>In message <EraseME200306121153.27442.picdudespamnarwani.org>> >           Picdude <RemoveMEpicdudeEraseMEspamEraseMENARWANI.ORG> wrote:
>
> > If there's a PIC in it, that would be Malaysia or Thailand I believe.
>I thought Microchip's wafer fab plants were company-owned. The last time I
>checked, they had two - one in Chandler, Arizona, the other in Tempe,
>Arizona. Excuse me if I spelled the names wrong - my knowledge of US states
>and cities is sub-par at best (that's what I get for being British, I
>suppose).

Yes, the fabs are in the US, but the packaging is done offshore.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
RemoveMEspeffspam_OUTspamKILLspaminterlog.com             Info for manufacturers: http://www.trexon.com
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2003\06\12@174136 by Charles Craft

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Wafer fab and chip assembly are separate processes.
Fab here in US, assembly overseas.
And there's another fab in Oregon.

http://www.microchip.com/1010/overview/forward/index.htm

A Global Network of Plants and Facilities




--{Original Message removed}

2003\06\12@184316 by Olin Lathrop

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>> If there's a PIC in it, that would be Malaysia or Thailand I believe.
>
> I thought Microchip's wafer fab plants were company-owned. The last
> time I checked, they had two - one in Chandler, Arizona, the other in
> Tempe, Arizona.

Those are silicon fab plants.  The packaging and final shipping I think
gets done in Thailand.

> Excuse me if I spelled the names wrong - my knowledge
> of US states and cities is sub-par at best (that's what I get for being
> British, I suppose).

You've got it the easy way around.  It can be rather confusing for us
simpleton americans when watching BBC programs where the place names sound
like meaninful words.  I guess you have to know the magic list of
keywords, because it's hard to spot them from syntax sometimes.  Maybe I'm
just slow, but it took me a while to get used to Midsummer Worthy being a
place name.  Then there are names like Muddy Field Over Hill Behind
Woodshed Upon Thames, and houses apparently have names too (and are valid
mail addresses ?) but often not something obvious like <blah blah> House.


*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

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2003\06\12@185608 by Herbert Graf

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> >> If there's a PIC in it, that would be Malaysia or Thailand I believe.
> >
> > I thought Microchip's wafer fab plants were company-owned. The last
> > time I checked, they had two - one in Chandler, Arizona, the other in
> > Tempe, Arizona.
>
> Those are silicon fab plants.  The packaging and final shipping I think
> gets done in Thailand.

       You are correct Olin, at least that's what the MChip rep at our local
corporate seminar said. TTYL

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2003\06\12@191656 by Picdude

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Some comedian (can't remember his name) once said .... "my father was Welsh, my mother was Hungarian, so that makes me Wel-Hung".
:-)

Cheers,
-Neil.


On Thursday 12 June 2003 15:59, Mike Singer scribbled:
> Marc Nicholas wrote:
> > I was assembled in South Africa from Welsh parts ;-)
>
> Women is a sometimes thing.
> (From "Porgy and Bess")
>
> Mike.

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2003\06\12@214510 by William Chops Westfield

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   I went several rounds with [olimex] on a board, trying to satisfy
   their solder mask requirements in Eagle.  It turns out that their
   script (and the requirements!) are a little wacky, but it is possible
   to supply .BRD files to them if that's what you want to do.

My interpretations of Olimex's requirements and Eagle's defaults (and
the values in most of the Eagle-provided libraries) is that they don't
match up very well :-( There are a bunch of tools for "adjusting" the
necessary things in Eagle (including one by me!), but most of them are
set up to operate within the "CAM" output process (that produces
gerber and drill files), rather than on the board itself.  So you can
adjust your drill sizes and make a silkscreen layer with adjusted line
widths, but the new values are all in the drill files and the new
layer, not in the "standard" layers.  So it looks to me like it would
be easier to NOT send the .BRD files?  Sure, Olimex might be able to
do all that for you, but it seems like a larger amount of "what you
saw was NOT what you got" than I'd feel comfortable with.  Disenting
opinions from people with more actual experience gladly welcomed.


   Anyway, if someone needs to run SILKWIDTH.ULP, contact me and I can
   send you my modified copy and give you some pointers for running it.

silkwidth.ulp had a lot of bugs.  My improved version is silk-new.ulp,
and it's got more features as well as bug fixes.  (Note that the new
features are largely aimed at being able to "etch" a silkscreen using
an LPKF PCB router on the copper, so perhaps they're not generally all
that useful...)

BillW

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2003\06\12@235644 by cdb

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On Thu, 12 Jun 2003 18:42:52 -0400, Olin Lathrop wrote:
You've got it the easy way around.  It can be rather confusing for us
simpleton americans when watching BBC programs where the place names
sound
like meaninful words.

Olin obviously won't be visiting Pratts Bottom any time soon! :) - It
is a real place I used to live down the road from there.

Colin
--
cdb, RemoveMEbodgy1TakeThisOuTspamspamoptusnet.com.au on 13.06.2003

I have always been a few Dendrites short of an Axon and believe me it
shows.

Light travels faster than sound. That's why some people appear bright
until they speak!

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2003\06\13@004540 by Picdude

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On Thursday 12 June 2003 10:25, Marc Nicholas scribbled:
> Also, as it's my first PCB and I'm a little bit strange at the best of
> times...I was thinking about maybe putting my unique mark on the PCB in
> someway. Maybe just something funny written on it like "Proudly made in
> Canada, eh?". Or a shout poem. Or a picture in the silkscreen/soldermask
> (Sun Microsystems used to put pictures on their early system PCBs!). Anyone
> want to talk me out of that? :-)

Do you mind if I steal .... errr ..... ahhh ..... I mean "borrow" this idea?  I thought of something neat today.  On an enclosed-pcb product with a "warranty void if seal broken" label, silk-screen "IF YOU CAN READ THIS, YOUR WARRANTY IS NOW VOID".

Cheers,
-Neil.

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2003\06\13@031007 by Peter L. Peres

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> Also, as it's my first PCB and I'm a little bit strange at the best of
> times...I was thinking about maybe putting my unique mark on the PCB in
> someway. Maybe just something funny written on it like "Proudly made in
> Canada, eh?". Or a shout poem. Or a picture in the silkscreen/soldermask

If you draw the text using polygons on the restrict layer and autoroute
the board the writing will likely appear in the trace pattern. I have
tried this and it works (even with Eagle) if the settings are just right.
If the board is sparse then the hugging parameter plays an important role
here.

I think that it would be a good idea to use this as much as possible. The
net and shops are full of ripoffs of various kinds and this would be one
that would make them easier to identify.

To rippers: Don't like the pcb of the product you just ripped showing the
logo of the ripee ? Tough luck. You can make your own then.

Peter

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2003\06\13@055246 by Nigel Orr

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pic microcontroller discussion list <> wrote on Thursday, June 12, 2003
4:26 PM:

> Also, as it's my first PCB and I'm a little bit strange at the best of
> times...I was thinking about maybe putting my unique mark on the PCB
> in someway. Maybe just something funny written on it like "Proudly
> made in Canada, eh?". Or a shout poem. Or a picture in the
> silkscreen/soldermask
> (Sun Microsystems used to put pictures on their early system PCBs!).
> Anyone want to talk me out of that? :-)

In a previous place of work, all PCBs had a variety of messages, in the
sure knowledge that at least one of our competitors would see them when
prodding around to see how we did things.  Some were visible, some in
hidden silkscreen (a large inductor with "The Force is strong with this
one" underneath it, a fine pitch surface mount with "nice desoldering, well
done!" underneath), and some on multiple copper layers, so you could only
see the whole message when the board was held between your eye and a bright
light.

Hope that gives you some more ideas!  And I would disagree that it appears
unprofessional, it's just an engineers version of art.  There is a website
somewhere with assorted pictures which appear on IC silicon, IIRC there is
even a software tool to add GIFs to your silicon layout!  Some of them were
company logos etc, but there was definitely a Mickey Mouse or similar in at
least one of the pictures.

Regards,

Nigel
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2003\06\13@071737 by Spehro Pefhany

picon face
At 10:52 AM 6/13/2003 +0100, you wrote:


>Hope that gives you some more ideas!  And I would disagree that it appears
>unprofessional, it's just an engineers version of art.  There is a website
>somewhere with assorted pictures which appear on IC silicon, IIRC there is
>even a software tool to add GIFs to your silicon layout!

I've heard of some of these things poorly designed so that they caused
failures in the chips. This would be a good way to shorten a lucrative
career as a chip designer.

Some of the tempting "open spaces" in my board designs are where there is
240VAC or higher clearance. If it's on the silk layer, no problem (unless you
cover over pads accidentally), but on the copper layers you have to be more
careful.

>  Some of them were
>company logos etc, but there was definitely a Mickey Mouse or similar in at
>least one of the pictures.

Imagine $1M+ of 0.13umasks and millions of dollars worth of chips being
recalled because Disney© complained about copyright violations.  ;-)

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
EraseMEspeffspamspamspamBeGoneinterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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2003\06\13@083029 by Olin Lathrop

face picon face
> Do you mind if I steal .... errr ..... ahhh ..... I mean "borrow" this
> idea? I thought of something neat today.  On an enclosed-pcb product
> with a "warranty void if seal broken" label, silk-screen "IF YOU CAN
> READ THIS, YOUR WARRANTY IS NOW VOID".

No problem, I'll just have to get someone illiterate to open it form me.


*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

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2003\06\13@093805 by Paul Hutchinson

flavicon
face
Check out the artwork etched into silicon @ the silicon zoo:
http://micro.magnet.fsu.edu/creatures/index.html

Paul

> {Original Message removed}

2003\06\13@100133 by Philip Pemberton

face picon face
In message <RemoveME200306122306.48757.picdudeKILLspamspamnarwani.org>>          Picdude <picdudeSTOPspamspamspam_OUTNARWANI.ORG> wrote:

> I thought of something neat today.  On an enclosed-pcb product with a
> "warranty void if seal broken" label, silk-screen "IF YOU CAN READ THIS, YOUR
> WARRANTY IS NOW VOID".
ROFLMAO!!!

Later.
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2003\06\13@100541 by Philip Pemberton

face picon face
In message <002301c33191$81ce8480$1800a8c0@Nigel>
         Nigel Orr <KILLspamnigelspamBeGonespamAXONINSTRUMENTS.CO.UK> wrote:

> There is a website
> somewhere with assorted pictures which appear on IC silicon,
There are two:
 "Molecular Expressions: The Silicon Zoo"
   http://micro.magnet.fsu.edu/creatures/
 "Chipworks"
   http://www.chipworks.com

> company logos etc, but there was definitely a Mickey Mouse or similar in at
> least one of the pictures.
That would be MOSTEK's doing, IIRC. One of their design teams developed an
alarm clock controller IC and put an image of a Mickey Mouse watch on the
silicon mask. Someone later informed an electronics trade magazine/journal of
the existence of said artwork, they decapsulated a chip, took a photo of the
"artwork" and slapped it on the cover! ISTR Disney were not amused.
The story's on the web somewhere... If anyone finds it, please post the URL!

Later.
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2003\06\13@105714 by Marc Nicholas

flavicon
face
On 13/6/03 05:52, "Nigel Orr" <@spam@nigel@spam@spamspam_OUTAXONINSTRUMENTS.CO.UK> wrote:

> Hope that gives you some more ideas!  And I would disagree that it appears
> unprofessional, it's just an engineers version of art.  There is a website
> somewhere with assorted pictures which appear on IC silicon, IIRC there is
> even a software tool to add GIFs to your silicon layout!  Some of them were
> company logos etc, but there was definitely a Mickey Mouse or similar in at
> least one of the pictures.

As I previously mentioned, Sun Microsystems put pictures on their early
motherboards. I believe they put a picture of Hobbes (from the Calvin and
Hobbes cartoon strip) on the SPARCstation IPX board in the silkscreen layer
;-)

-marc


--------------------------------------------------
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UNIX, Database, Security and Networking Consulting

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2003\06\13@110750 by Marc Nicholas

flavicon
face
On 13/6/03 10:03, "Philip Pemberton" <spamBeGonephilpemspamKILLspamDSL.PIPEX.COM> wrote:

> That would be MOSTEK's doing, IIRC. One of their design teams developed an
> alarm clock controller IC and put an image of a Mickey Mouse watch on the
> silicon mask. Someone later informed an electronics trade magazine/journal of
> the existence of said artwork, they decapsulated a chip, took a photo of the
> "artwork" and slapped it on the cover! ISTR Disney were not amused.
> The story's on the web somewhere... If anyone finds it, please post the URL!

www.spacey.net/tshaw/Disney/PictFrame.php?Images/Pokes/mostekmickey.j
pg

There's what it looked like. If you "go back" the Hidden Mickeys page, you
can read the story.

-marc

--------------------------------------------------
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UNIX, Database, Security and Networking Consulting

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2003\06\13@122044 by Robert Ussery

flavicon
face
part 1 1833 bytes content-type:text/plain; (decoded 7bit)

I don't know about Eagle and some of the more production-oriented board
houses like Olimex, but ExpressPCB supports drawing just about anything in
the silkscreen layer. You can put polygons, lines, text, points, etc. in
there. May cost a bit, but it's doable.


- Robert



{Original Message removed}
part 2 17813 bytes content-type:image/jpeg; (decode)


part 3 2 bytes
-

2003\06\13@131500 by Mike Singer

picon face
My humble opinion based on quite a bit of experience:

ANYTHING MUST NOT BE PLACED ANYWHERE IF THIS IS
NOT DIRECTLY REQUIED BY THE REQUIREMENTS SPECIFICATIONS,
REGARDLESS OF IS THIS PROFFESSIONAL OR HOBBYIST WORK.

Just my 2 cents.

Mike.

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2003\06\13@132750 by Dominic Stratten

picon face
There have been quite a few people who have "hidden" pictures in their
designs (especially microchips). Someone on the list posted this URL last
month but for the benefit of those who havent seen it yet :

http://www.micro.magnet.fsu.edu/creatures/


{Original Message removed}

2003\06\13@190206 by Picdude

flavicon
face
On Friday 13 June 2003 07:30, Olin Lathrop scribbled:
> No problem, I'll just have to get someone illiterate to open it form me.

Oh dear, the almighty Mr. Lathrop made a typographical error here.  I assume that you intended to state "... for me.", instead of "...form me."

Or perhaps I should point out the error, snicker and tell you to bug off for some time until you learn English, as that may be more understandable to you?

-Neil.

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2003\06\13@191046 by Charles Craft

picon face
This subject has been covered before - please check the archives.

There can only be one grumpy bastard on the list and Olin beat us all to it. If/when he steps down I hope it goes to someone with a better handle than "picdude". :-)

Must be Friday.  :-p




--{Original Message removed}

2003\06\13@191051 by Jake Anderson

flavicon
face
(It may have just been a joke (hmmmm "Olin" and "Joke" in the same
sentence??) with that whole illiterate thing)
{Original Message removed}

2003\06\13@192743 by Brian L

picon face
Busted! It clearly show who the illiterate person is that Olin was referring
to. :)



Picdude wrote:
> > On Friday 13 June 2003 07:30, Olin Lathrop scribbled:
> > No problem, I'll just have to get someone illiterate to open it form me.
>
>Oh dear, the almighty Mr. Lathrop made a typographical error here.  I
>assume
>that you intended to state "... for me.", instead of "...form me."

_________________________________________________________________
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2003\06\13@194240 by Charles Craft

picon face
Did Olin's post about how many people it takes to respond to a post make it to the FAQ - ROTFLMAO!


--{Original Message removed}

2003\06\25@202031 by Wouter van Ooijen

face picon face
> I am not sure what the 'penalizing' is but did you considered
> panelizing
> your order such that each 'board' actually include multiple
> boards that
> you later cut yourself (remember to include silk screen or
> copper guides
> that will help you to cut the board).

No need to do that with Olimex, they will do it for you (for free). That
is what the OP means with 'penalizing' :)

Wouter van Ooijen

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2003\06\25@202036 by Wouter van Ooijen

face picon face
> I've read everything on the Olimex website, and think that I've got an
> understanding of what they expect and some common pitfalls.

If you want to avoid extra charges:
- check you silkscreen witdths (or specify 'no silkcreen')
- check your drill sizes

Wouter van Ooijen

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2003\06\25@203804 by William Chops Westfield

face picon face
   > I've read everything on the Olimex website, and think that I've got an
   > understanding of what they expect and some common pitfalls.

   If you want to avoid extra charges:
   - check you silkscreen witdths (or specify 'no silkcreen')
   - check your drill sizes

But you can't change those directly in the .BRD file, right?  Both are
defined off in the libraries that are "probably" better left unmodified.
You can make a new silkscreen layer with modified widths using one of
the ULPs, and the drills can be adjusted to with tolerance with the
output CAM processor, but that doesn't actually change their size in
the .BRD file.  Or am I missing something?

BillW

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2003\06\25@230247 by Ben Jackson

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face
On Wed, Jun 25, 2003 at 05:37:15PM -0700, William Chops Westfield wrote:
>
> But you can't change those directly in the .BRD file, right?  Both are
> defined off in the libraries that are "probably" better left unmodified.
> You can make a new silkscreen layer with modified widths using one of
> the ULPs, and the drills can be adjusted to with tolerance with the
> output CAM processor, but that doesn't actually change their size in
> the .BRD file.  Or am I missing something?

No, that's pretty much it.  They accept BRD files but there's no point
in submitting them.  You're better off generating modified silkscreen
layers and producing your own gerber files where you can tweak the
drills by the few thou necessary to stay in the standard drill set.

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