Q?.
Do you want to protect YOUR bike or do you want to make a product?
If you are making a product it does not matter HOW flawed it is. If it
can be found and disabled, if it worked effectively or not. All these
things are unimportant. Good marketing spin can convince idiots with
expensive
>> Routing signals through those internal connections
>> would have been no issue at all, though I wouldn't
>> have thought to actually do so in the projects in
>> question (and adding the extra copper to satisfy
>> the netlist was no big deal).
> I imagine that's often the case. With a switch
William Estrada wrote:
> Hi group,
>
> Does anyone have a sym file for the FT232RL?
>
>
http://www.gedasymbols.org/user/andrew_mccubbin/
But I might have horrible symbol styles I learned from Autotrax that
others dont like.
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> If anybody has a better idea, yelp.
>
EDM ?
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DJ Delorie wrote:
>> I think you can score them with a utility knife on both sides and
>> snap them apart.
>>
>
> I've tried that before with no luck. The boards are just too thick to
> be able to score reliably and deeply enough.
>
>
That old wives tale comes from the days when paper/phe
>> Someone wrote:
>>
>> [Electrolytics] can explode pretty violently, so
>> let me tell you a story. [...785V on a 450v
>> cap...serious dent in plaster...]
> Robas, Teodor wrote:
>
>
> The resulting flame was always entertaining !
> Sometimes the ASIC wanted to take all the punc
David SMITH wrote:
> On Fri, Aug 15, 2008 at 07:12:14PM +1000, andrewm wrote:
>
>> Try using Blu-Tak instead of either tweezers or finger nails.
>>
>> It is more compliant than either and doesn't hurt when burnt :D
>>
>
> You mean to stick them to
David SMITH wrote:
> On Fri, Aug 15, 2008 at 09:43:33AM +0100, Dylan Smith wrote:
>
>> On Thu, 14 Aug 2008, Robert Butts wrote:
>>
>>> I got pcbs back and now want to assemble them. What is the best way, i.e.
>>> solder paste to use, heating method, solder bridge removal...? Most of the
>
DJ Delorie wrote:
> I usually put packing tape on the back to keep it from etching, but I
> float it anyway. I've tried lining up the two sides but lining them
> up is tricky.
>
>
>
DJ,
Now you have Seen-The-Light (tm) and come over to the side of photo-etch
have you
tried either the brass o
Jesse Gordon wrote:
> I'm still looking for a good quality but small USB camera (low-res black
> and white or high-res color prefered) that works with Linux, that is not
> ov511 based, if anyone knows of such a thing.
> (The ov511 works great, but has a bug which causes the auto light gain
> con
Dave wrote:
> I realize I can draw them in by hand by turning of "new traces clear
> polygons". I guess for this design that's what I'll have to do, because
> regenerating all my footprints, regenerating and re-validating the net
> list, and re-doing all the routing done so far is just too co
> Dave wrote:
>
> and paint both sides with "machinists' blue stuff" -- I'm
> not sure what it's properly called
Prussian Blue.
Though not the neo-nazi/white-power rock band.
>
> The CO2 laser is the wrong wavelength for cutting
> metal, it just reflects off.)>
The CO2 laser will cut m
Peter Clifton wrote:
> On Tue, 2008-01-15 at 08:39 +1000, andrewm wrote:
>
>>>
>>>
>> I use a vanilla debian install and am happy to help with testing.
>>
>
> As I'm using Ubuntu Gutsy, I'm not able to provide Debian packages.
> Give me a couple of days, and I'll send you some un-official 1.3.1 .debs
> if you want to try running latest gEDA, with icons etc... (This is if
> you don't mind beta-testing for us).
>
I use a vanilla debian install and am happy to help with testing.
__
DJ Delorie wrote:
>> The hardest part is the 0.3mm vias in a drill press with no
>> alignment aids.
>>
>
> http://www.delorie.com/pcb/dremel-stand/
>
> although the dremel shaft itself has about 6 mil of play in it. I've
> tweaked the drill helper checkbox of the PS exporter to be more
> suit
> Lope De Vega wrote:
>
>
> I'm trying to build a circuit with a cp2102, which has
> 0.5 mm between pins' center (actually 0.2mm between
> pins). It is a qfn-28 package.
>
> I wanted to ask if anyone has had success with
> something similiar? my workflow would be printing the
> schematics as give
Google "PCB" under a windows machine
Fist hit Wikipedia Polychloride Biphenyl
Second Hit Wikipedia Printed Circuit Board
Third Hit pcb.sourceforge .net
Peter Clifton wrote:
> On Mon, 2007-11-26 at 15:02 -0600, John Griessen wrote:
>
>> Peter Clifton wrote:
>>
>>
>>> Perhaps we should nam
>> The tricky part is the vias. What I ended up doing is drilling big
>> holes in the outer layers before taping them on, then drilling small
>> holes through the full stack.
>>
>
> I considered this once, but decided it was too crazy.
>
> Now since you're obviously crazy, it's just a matter
I asked the same question a few months ago and
didn't think the Nominal/Maximal/Least names
where suitable for my hand soldered footprints.
For the hand soldered footprints the pads extend
way past what is in the "maximal" JDEC footprint.
I decided to just postscript "HS" onto the end of
the foot
DJ Delorie wrote:
>> At that zoom there are still some issues with the scale being so
>> small that there's still ambiguity.
>>
>
> I'm not sure any code changes will give you a bigger screen ;-)
>
>
Ah - but how about a magnifying glass over the cursor.
_
Dave McGuire wrote:
> On Sep 29, 2007, at 2:54 AM, andrewm wrote:
>
>>>>> Please excuse the QRM. testing new MTA
>>>>>
>>>>>
>>>>Nope, it's broke. ;)
>>>>
>>>>
>>>
Greg Cunningham wrote:
> On Sat, 2007-09-29 at 02:31 -0400, Dave McGuire wrote:
>
>> On Sep 29, 2007, at 2:29 AM, Greg Cunningham wrote:
>>
>>> Please excuse the QRM. testing new MTA
>>>
>>Nope, it's broke. ;)
>>
>> -Dave
>>
>>
> My!... Early riser in Florida? .
I am trying to install the 20090912 version to check if bugs I am
getting are new or fixed ones before I trouble the list with them.
However I am not even bright enough to install the thing.
I am on a debian etch box.
I have make uninstall'ed stuarts ISO version.
I have edited the Makefile in
> John Griessen wrote:
>
> I like your minimization of vias. Most of
> your vias seem to double as headers for
> test and interconnect.
The only way I could work out how to do this
easily in PCB was to make a new component
that was just 5 pins in a row and add them
in the schematic to the t
After much wailing and gnashing of teeth at the grid alignment bug
here is my first PCB produced with gEDA/PCB
http://www.thehacktory.com/IR-simple-v1p52-top.png
http://www.thehacktory.com/IR-simple-v1p52-bot.png
It took several days because of learning curve and the grid bug
and there are stil
Have you tried the contact microphone (pizeo buzzer)
yet to narrow down the location ? Hook it up to your
sound card if you don't have a great scope.
I am assuming it is in the bottom right hand corner of
the picture where it looks like the switcher and the
SM inductors are that it seems to be
seems to be back to normal.
andrewm wrote:
> Guys,
>
> Don't know if this is a bug or not.
>
> I have a PCB that is metric grid of 0.05mm.
>
> I have my 0.45mm pitch QFN package all lined up on the
> grid so traces end on the pads.
>
> I make a component get
Guys,
Don't know if this is a bug or not.
I have a PCB that is metric grid of 0.05mm.
I have my 0.45mm pitch QFN package all lined up on the
grid so traces end on the pads.
I make a component get too close to a via (purposefully to
replicate the behavior)
I do a DRC and it pops up the clearanc
DJ Delorie wrote:
>> However if I turn of the silk screen completely (which I would prefer) I
>> can not drag/move components.
>>
>> Is this normal behavior ?
>>
>
> Yes. What I'd do is set the minimum silk to 0.1, and reduce the sizes
> of the text so that it *does* fit on your board. Then
DJ Delorie wrote:
>> A lot of switching power supplies have a low-current mode where they
>> don't switch at the full rate.
>>
>
> It's switching at 150KHz (it's normal rate), about 25% duty cycle.
>
> I tried adding a 68 ohm resistor on the 3.3v bus, no change.
>
>
> _
DJ Delorie wrote:
> 1. How do you find out where such a noise is coming from, when
>everything is so close together? Neither a stethoscope nor a straw
>were helpful.
>
>
Get an electret mic running off a battery on one scope lead
Probe around with other scope lead to see what is in syn
My brain is getting a bit fried at the moment with new software overload.
I am having an issue with silk screens on PCB.
I can not turn off the silk screen legend (only switch between footprint
refdes and value) and I also can not delete the text on the silk screen.
I am making a board that is
Tools,
I use a car battery hygrometer for measuring density. The car battery
hygrometers do not cover the full range of acceptable densities for
etching but does cover the optimum.
For acid measurements I do periodically titrate using the method given
by Adam in his page. Most of the time I
>> andrewm wrote:
>> I have same numbered the pins on the switch as they
>> are electrically connected inside. I often use the
>> pins on those switches as jumpers to get wires out
>> of tight spots and thought that giving them the same
>> number wo
John Griessen wrote:
> I'm liking the transparency and low hassle and low toxicity of HCl/H2O2,
> and mostly want to do prototypes or circutis that go on low cost
> substrates so don't need to be teeny
> as possible to save board area. I like the low tolerance approach --
> don't want to be a comm
>> andrewm wrote:
>> DJ - When you are etching your brass stencils they are almost all
>> resist and only tiny apatures. If you work out the cost of inkjet
>> ink and the amount of coverage you need - it may make a $200K laser
>> cutter seem like a prudent
>> JohnG wrote:
>> What do you all think about inkjetting of resists?
The second biggest problem apparent with direct
inkjet is pooling. The big problem is surely the ink
not actually resisting. But pooling caused by too
much ink in one spot while wet is causing uneven
coverage and the thin ar
> Ben Jackson wrote:
> Looking only at CTS-252-switch in detail:
>
> PCB will not clip the silkscreen over the copper, and some fabs will
> go ahead and print it right over the pads.
>
> Interesting quirk I see with PCB is that you have some same-numbered,
> overlapping pad/pins and they are in th
>> andrewm <[EMAIL PROTECTED]> writes:
>> If some of the in crowd can have a look at them and comment if I am
>> doing things the right way.
>>
> DJ Delorie wrote:
> Quick note: you shouldn't draw silk over pins or pads. Some fab
> houses won&
DJ Delorie wrote:
>> If some of the in crowd can have a look at them and comment if I am
>> doing things the right way. Hopefully before DJ links them to the
>> front page and they escape to the real world.
>>
>
> Too late; the link is automatic :-)
>
Ah well - hopefully if they are bad th
Howdy all,
I have just uploaded my first footprints I have made to the geda symbols
site
http://www.gedasymbols.org/user/andrew_mccubbin/
If some of the in crowd can have a look at them and comment if I am
doing things the right way. Hopefully before DJ links them to the
front page and they
DJ Delorie wrote:
> It depends. For example, getting a school, classroom, or other
> organization to try it as a group is different than getting the same
> number of people to try it individually. As a group, they can work
> together to solve many of their individual problems and share
> solutio
> DJ Delorie wrote:
>
> IMHO a slowly growing user base gives us (1) more
> insight into the average user, (2) more reason to
> worry about usability issues, and (3) hopefully a
> steadily growing developer base also.
>
> But first and foremost, everyone needs to realize
> that most of th
>> Duncan Drennan wrote:
>>
>> I think John Luciani has pretty much
>> demonstrated that this is possible with a
>> bit of work. All that now needs to happen is
>> for people to start adopting gEDA - but that
>> is a whole different story, which requires
>> strong marketing.
>>
> John Griessen
John Luciani wrote:
> On 9/1/07, andrewm <[EMAIL PROTECTED]> wrote:
>
>> I am presently drawing up footprints for my stock components.
>>
>> I have read the naming conventions for the footprints and have
>> done some searches but can't find an an
>> andrewm wrote:
>>
>> If it's not been done by anyone already I am going
>> to just write some kind of parser that does it for
>> me external.
> DJ Delorie wrote:
> Sounds like a useful tool. Teach it to allow
> overrides on a per-val
I am presently drawing up footprints for my stock components.
I have read the naming conventions for the footprints and have
done some searches but can't find an answer to this query.
I have for many components two different foot prints. I would
like to know if there is a convention to naming th
>>> Someone wrote:
>>>
>> andrewm wrote:
>> Whats the smallest thing people have had to deal
>> with so far then ?
> DJ Delorie wrote:
> I've done 01005 caps, which are 8 mils by 16 mils. PCB had no
> problem with those. I've also d
>> DJ Delorie wrote:
>>We're going to need to bump pcb's resolution up again.
> Steve Meier wrote:
> I have serious reasons to think so.
Whats the smallest thing people have had to deal with so far then ?
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