Re: gEDA-user: gEDA Wikibook ?

2010-12-25 Thread John Coppens
On Fri, 24 Dec 2010 16:20:03 +0100
kai-martin knaak k...@familieknaak.de wrote:

 It about finding authors.

I'm not entirely sure about that. I think there would be persons that
would be prepared to produce documents, if there were no necessity to
wade through the source code to detect what has to be written about.

Even if the source code has excellent comments included, few people
will volunteer for the task if the it isn't clear what has to be done.
That is not unsimilar to writing code for a client - the work is not
writing the code. It is getting reliable specs from him/her.

John


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Re: gEDA-user: gEDA Wikibook ?

2010-12-24 Thread John Coppens
On Fri, 24 Dec 2010 10:43:34 +0100
Armin Faltl armin.fa...@aon.at wrote:

 I know that a wiki book may have some advantages in the collaboration
 of making. But why not a real book, that is written in LaTeX?

When thinking bout documentation, please do take into account the effort
being done by people line Shaun McCance, to create a new help format for
gnome. 

www.mallardproject.org documents this, and it has some very tempting
features, such as reverse linking. Also, it seems to be the preferred
help format for gtk+-3.0, and has been integrated into the new help
system 'yelp' which is quite a step forward.

I'm only just starting to learn how to write in it.

John


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Re: gEDA-user: Text in PCB elements

2010-12-14 Thread John Coppens
On Tue, 14 Dec 2010 12:09:45 +0100
Kai-Martin Knaak kn...@iqo.uni-hannover.de wrote:

  If footprints are extended to allow text elements to be included, then
  I really hope that general polygons will be allowed too.
 
 plus arcs, two layers of silk, lines in copper, vias, mid layers, ...
 In short: The footprint format should allow everything you can do in a 
 layout. I see no point in arbitrary restrictions.

That was mainly what I was wondering about in the first place.
Shouldn't footprints be something like functions in programming? Or
maybe slightly more similar to macros?

John


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Re: gEDA-user: Text in PCB elements

2010-12-10 Thread John Coppens
On Fri, 10 Dec 2010 11:12:22 +0100
kai-martin knaak k...@familieknaak.de wrote:

 A less ambitious way to achieve text in footprints would dissolve 
 letters into lines and add them to the footprint like you would 
 with ordinary lines. In silk they stay straight forward lines. In
 copper they'd become SMD pads with the same name. Pads might 
 optionally be covered with solder mask. The GUI might look up 
 letters as footprints in the library and arrange them to yield
 human readable text.

Not a bad idea... It could be a temporary solution, I guess.

I did notice that a PCB file includes the entire font if a text is
written anywhere on the board. How is this handled with, eg. refdes in
elements? Does this also trigger inclusion of the font?

John


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Re: gEDA-user: Text in PCB elements

2010-12-10 Thread John Coppens
On Fri, 10 Dec 2010 16:07:58 -0800
Colin D Bennett co...@gibibit.com wrote:

 Unfortunately this may not work well for footprints since I have found
 the best results from pstoedit to be achieved using the pcbfill
 output driver, which uses only polygons to render text, and PCB does
 not support polygons in footprints, even on the silk layer, apparently.

I was looking at the source code, and I have the impression that
polygons are possible in footprints, though only rectangular ones.

I'm somewhat confused about the workings of PCB in this aspect - I
suspect this has something to do with the complexity of rotation etc.
Probably someone is needed to code complex polygon rotations...

John


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Re: gEDA-user: Text in PCB elements

2010-12-10 Thread John Coppens
On Fri, 10 Dec 2010 23:23:29 -0300
John Coppens j...@jcoppens.com wrote:

 Probably someone is needed to code complex polygon rotations...

Sorry - that may not have come out as intended... This wasn't meant as
criticism...

John


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gEDA-user: Text in PCB elements

2010-12-09 Thread John Coppens
Hello all.

I seem to remember I read about this a time ago, but me and google can't
seem to find any reference:

I'd like to put text into PCB elements (in this case to label pins of a
connector on the silk screen), but that doesn't seem possible... Each
time I try to add text to an element, it just disappears. I checked the
specs.

I know I could do it manually at board design time, but I use this
connector regularly, and would rather have the text at the pins be
printed automatically. I suspect this would be welcome to mark C, B, E
in transistors, K/A in diodes, and other applications.

Suggestions? Or maybe an estimate on how difficult it'd be for an
average programmer to add?

John


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Re: gEDA-user: PCB+GL Testers (please test)

2010-11-03 Thread John Coppens
On Wed, 03 Nov 2010 17:29:04 +
Peter Clifton pc...@cam.ac.uk wrote:

 Here is the gotcha.. the VBO code didn't really work on the NVidia
 machine.. rendering got really slow. If you discover this, you can force
 it back to using Arrays rather than VBOs with this patch:

Peter,

Maybe, just by chance, you have the same problem I had (855 chipset).
There is a bug going around in the Intel drivers, which was finally
solved in the latest kernel, 2.6.35, but even there, a last minute
error crept in, and req'd a patch. If this is the case, I can fetch the
solution.

John


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Re: gEDA-user: pcb crooked traces

2010-10-08 Thread John Coppens
On Fri, 8 Oct 2010 14:10:39 -0400
DJ Delorie d...@delorie.com wrote:

 I'm guessing they're around 0.5 to 1.0 meter, based on the size of the
 drill machines...

A couple of days ago, checked Eurocircuits (.com). They have a max of
425 x 425 mm (410 x 410 in tech pool).

John


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Re: gEDA-user: [OT] Fluorescent tube help

2010-08-12 Thread John Coppens
On Thu, 12 Aug 2010 09:53:43 -0500
John Griessen j...@ecosensory.com wrote:

 Or shop for a second hand UV tanning lamp?

Another solution might be looking at the circuits that excite the tubes
with high frequency. With a simple oscillator, you can use the tubes
without the filament, and if they still have gas, they'll light up anyway.

Plenty of circuits on the 'net.

John


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gEDA-user: Wiki pages

2009-07-17 Thread John Coppens
Hello people.

Once in a while, I have the urge to save a page which seems too useful to
download it every time I need it. I tried to do that with a couple of the
gEDA wiki pages, and found that its format doesn't really allow to do that
(something I didn't notice on other sites - at least it doesn't work
with Firefox 3.0.xx). I may be wrong - I'm not an HTML expert, but I
noticed a couple of issues:

1) The logo has an absolute link:
 http://geda.seul.org//graphics/navlogo.png

2) It seems most of the problems are caused by the ':' in the URL.
   If I do a seach-and-replace (geda: by geda_) all links work in the
   saved page, and all images show (which they didn't before the 
   change). I'm doubtful if the ':' is legal (even though it works).
   Normally a ':' in a URL is the separator between URL and the port.
   (eg. http://my.url.org:8080)

3) This also works for CSS: before the replacement, css files were not
   loaded correctly.

4) Neither CSS validation (2 errors) nor HTML validation (33
   errors) accept that page (geda:gsch2pcb_tutorial). Most are very minor
   errors - but they may contribute to the save problem.

Note this is not criticism, just observing a couple of points which might
improve the usability of the docs. ... and I offer my help if wanted.

John

PS: My workaround is to save it as PDF from the browser - which works
reasonably well, but I prefer HTML.


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gEDA-user: Small bug in PCB?

2009-07-12 Thread John Coppens
Hi all.

It's nothing really. I just installed the latest stable PCB, recompiled
'cause I switched to 64 bit, and noticed the printer calibration option.
Tried it, and found that in the first step (selecting the printer), the
cancel button seems to have the same effect as the Ok button (at least,
it doesn't cancel the process).

Anyone notice this?

John


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Re: gEDA-user: Breadboard drawings with pcb?

2009-05-25 Thread John Coppens
On Mon, 25 May 2009 19:55:23 +0200
Josef Wolf j...@raven.inka.de wrote:

 - How can I make the breadboard drawing appear light-grey in pcb's
   postscript output?

A trick I've used is to export or print the board to postscript. Then
you'll have many pages, one of them the vias alone, and on another the
silkscreen. You can then  combine both in GIMP and color the vias any
color you like.

Some of the silkscreen drawings of the standard components may have to be
edited a little for 'aesthetic' purposes.

John


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Re: gEDA-user: Breadboard drawings with pcb?

2009-05-25 Thread John Coppens
On Mon, 25 May 2009 22:58:26 +0200
Josef Wolf j...@raven.inka.de wrote:

 I'd prefer something more scriptable, since I expect to have _lots_ of
 circuits.  But at a first glance, it looks like the ps/eps outputs are
 easy to postprocess.

If you want publishing (printing) quality output, you'll have to pass
through ps anyway. There are a lot of utilities on the 'net that let you
combine ps outputs in many ways, using command line utilities.

John


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Re: gEDA-user: Crash in gschem

2009-04-27 Thread John Coppens
On Mon, 27 Apr 2009 13:39:42 +0200
Stefan Salewski m...@ssalewski.de wrote:

  More testing reveals that, even on an empty 'New' page, a vertical pin
  crashes gechem! (not a horizontal one)
  
 
 I did some tests yesterday but was not able to see problems -- I use
 1.4.3 on Gentoo-AMD64. But indeed I nearly never create new pins --
 using a prototype generated with tragesym and only fine-tuning in gschem
 is faster, and it ensures that all looks perfect (perfect aligned/sized
 text) -- at least for tragesym from 1.5.2. And it ensures that all
 attributes are present.

I haven't used tragesym yet, but the symbol I wanted to create was a very
non-standard transmissive opto sensor. I don't think tragesym caters for
such symbols.

Anyway, I submitted the problem as a bug report on sourceforge - I hope
someone reads it. There seems to be little activity there.

I solved the problem by drawing the symbol, rotating 90 degrees, adding
the pins, and rotating back. It's only _drawing_ the symbol that causes
the problems - it may be a GUI issue.

Cheers,
John


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gEDA-user: Crash in gschem

2009-04-26 Thread John Coppens
Hello all.

I was trying to define a new symbol for one of these U-type
optocouplers (TCST2302). Near the end, when adding the first pin, gschem
disappeared. Redoing everything repeated the problem... 

More testing reveals that, even on an empty 'New' page, a vertical pin
crashes gechem! (not a horizontal one)

Not sure if I'm doing anything wrong... But IMO, no program should
crash, ;-) 

Version is 1.4.3 (latest stable, home-compiled)

The terminal window reported:

In unknown file:
   ?:  0* [#procedure #f (pin) #object pin.3059]
In /opt/gnome/share/gEDA/system-gschemrc:
 861:  1* [autoplace-pin-attributes #object pin.3059]
In /opt/gnome/share/gEDA/scheme/auto-place-attribs.scm:
 740:  2  (let (# #) (autoplace-text pin pin-direction attribute-list))
...
 731:  3  (begin # #)
 732:  4* [set-default-position #object pin.3059 #attribute
pinnumber=0 ...] 654:  5  (if (null? defaults) 0 ...)
...
 656:  6  (let* (# # # ...) (if # #) ...)
 664:  7* (if (and # # #) (begin #))
 670:  8  (begin (let* # #))
 672:  9  (let* (# # # # ...) (set-attribute-text-properties! attribute
 -1 ...)) 687: 10* [calcule-new-attrib-bounds #attribute pinnumber=0
Lower Left ...]

/opt/gnome/share/gEDA/scheme/auto-place-attribs.scm:687:42: In procedure
calcule-new-attrib-bounds in expression (calcule-new-attrib-bounds
attribute
new-alignment ...): /opt/gnome/share/gEDA/scheme/auto-place-attribs.scm:687:42:
Wrong type argument in position 4: 45650.0

Program exited with code 02.


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Re: gEDA-user: Open GL survey (for PCB)

2009-01-28 Thread John Coppens
On Wed, 28 Jan 2009 20:44:12 +0100
Oliver Lehmann lehm...@ans-netz.de wrote:

 No OpenGL support for many ATI cards on FreeBSD because no native
 drivers and the open source ones are mostly lacking support. No idea
 how good the binary nvidia driver works...

I have a GeFORCE (was that the right name?) and am using the binary
driver. It works fine in normal use - quite fast with video and all. But
there may be pitfalls. Eg. if the XFCE compositor is turned on, graphics
slow down enormously - video is near impossible then (on a 2.6GHz AMD).

John


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Re: gEDA-user: omnibus order 0805

2008-07-30 Thread John Coppens
On Thu, 24 Jul 2008 14:37:24 + (UTC)
Kai-Martin Knaak [EMAIL PROTECTED] wrote:

 A few days ago I started an omnibus order of common 0805 components in 
 de.sci.electronics (see thread Sammelbestellung R und C in SMD-0805).

Hello Kai-Martin...

I'm not sure my mail is disappearing, but after answering your question
(2 messages), I didn't get any reply?

John


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Re: gEDA-user: Newbie questions

2008-07-05 Thread John Coppens
On Sat, 05 Jul 2008 19:04:52 +0200
Johannes Bauer [EMAIL PROTECTED] wrote:

 John Coppens schrieb:
 
  1. How can I highlight a complete net in gschem? I have mostly stuff 
  like http://bildrian.de/n/b/c3c0ce767ca5d198.png this - when I want
  to find out where exactly PA2 goes, I have to manually follow each
  piece of network, which is kind of annoying.
  
  According to 
  http://article.gmane.org/gmane.comp.cad.geda.user/12275
  it's not yet possible
 
 Oh, this is quite unfortunate, since that would be an interesting 
 feature. Since the article you quoted was posted one year ago I believe 
 that there are no attempts on implementing that either, are there?

Not that I'm aware of

  2. I love the keyboard shortcuts, they make design really efficient
  when you got used to. One thing that annoys me, however, is that nets
  are started with n, but when you're finished, you have to hit
  Escape. This is a long way from the n. Can I remap it so that
  finishing networks can be done with, say b?
  
  Right click will stop the current net, and left-click will restart the
  net (i.e. gschem remains in 'net' mode)
 
 What I meant was the following: You draw a net, which is quite long and 
 has many corners. In the last step you misclick. Then you have to 
 right-click, Ctrl-Z, left click the last point, left click the correct 
 point, right click again.
 
 It would be nice if, after the misclick you'd hit, for example b
 which would revert the last network leg and still stay in network
 drawing mode (e.g. that you do not have to left click the last point
 again). I guess this isn't possible then?

Why? If you draw a net, Ctrl-Z immediately deletes to the previous
clicked point. No strange extra clicks?

  4. When moving vertecies which are connected to two networks (e.g. a 
  corner somewhere), how can it be done that *both* endpoints of the
  net in question are moved? Currently when I move a point it first
  moves the vertex from the first part, disconnecting the network.
  Then I have to manually also pull the second one there.
  
  If you drag the center (not the endpoints) of a segment, it'll move
  entirely (remaining connected to the net). I'm not sure what you
  mean...
 
 This is true. However, suppose I have the following constellation:
 
 http://bildrian.de/n/b/975ae00f165bc4ee.png
 
 Now I'm moving the rectifier to the lower left. No matter what legs I 
 select together with the rectifier, I'll always end up having to fix
 one or two vertices, in this case two:
 
 http://bildrian.de/n/b/84c98f67a293d55d.png
 
 Therefore it'd be nice if the vertices of both leg nets could be moved 
 simultaniously. I don't see any point on why it would make sense to rip 
 the network apart upon movement of a vertex.

Make a selection which includes the net lines + the rectifier and you can
move them all together. Of course there will be situations where you will
have to touch up some nodes, particularly if you want to move diagonally.
But even that, you can do with two different selections.

John



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Re: gEDA-user: Newbie questions

2008-07-04 Thread John Coppens
On Fri, 04 Jul 2008 18:37:51 +0200
Johannes Bauer [EMAIL PROTECTED] wrote:

 Hello list,
 
 I'm a total gEDA newbie and am pretty amazed about what is possible 
 already. Still, I'm currently having some problems which probably are 
 extremely easy to solve for some of you - most of them are only about 
 usability. Currently I'm just designing with gschem, maybe do some PCBs 
 later. So here are my questions, all about gschem:
 
 1. How can I highlight a complete net in gschem? I have mostly stuff 
 like http://bildrian.de/n/b/c3c0ce767ca5d198.png this - when I want to 
 find out where exactly PA2 goes, I have to manually follow each piece
 of network, which is kind of annoying.

According to 
http://article.gmane.org/gmane.comp.cad.geda.user/12275
it's not yet possible

 2. I love the keyboard shortcuts, they make design really efficient
 when you got used to. One thing that annoys me, however, is that nets
 are started with n, but when you're finished, you have to hit
 Escape. This is a long way from the n. Can I remap it so that
 finishing networks can be done with, say b?

Right click will stop the current net, and left-click will restart the
net (i.e. gschem remains in 'net' mode)

 3. When drawing nets, is it possible to just undo the last click while 
 staying in network drawing mode? I currently always hit Escape, then 
 mark the net, move the misplaced vertex, then again hit n.

Ctrl-Z undoes the last 'leg' of the net
 
 4. When moving vertecies which are connected to two networks (e.g. a 
 corner somewhere), how can it be done that *both* endpoints of the net 
 in question are moved? Currently when I move a point it first moves the 
 vertex from the first part, disconnecting the network. Then I have to 
 manually also pull the second one there.

If you drag the center (not the endpoints) of a segment, it'll move
entirely (remaining connected to the net). I'm not sure what you mean...

 Any help appreciated,
 Thanks,
 Johannes

John


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Re: gEDA-user: poll: How do you geda?

2008-06-04 Thread John Coppens
On Wed, 4 Jun 2008 09:55:26 + (UTC)
Kai-Martin Knaak [EMAIL PROTECTED] wrote:

 * What OS do you run geda applications on?

Linux (Slackware)
 
 * How did you install your copy of geda apps?

Source  compile
 
 * Which apps do you use. What is your typical workflow?

gschem/spice/PCB

 * Did you (have to) modify portions of geda to suit your needs?

No (except define a bunch of symbols and footprints)

 * What is the general flavor of your projects? (analog, digital, HF)

Mixed - a bit of everything
 
 * What is the greatest weakness of gEDA?

Inconsistent user interface for the apps. Lack of docs.

John


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gEDA-user: Silk text disappears when making a component

2008-03-30 Thread John Coppens
Hello all,

I have a component, and wanted to add a warning text to the silkscreen
layer. I broke the component down, added the text and copied everything
to the buffer. All well till now. I can even past it back to the board.

But when I press 'Convert buffer into element', the text disappears. What
am I doing wrong here?

PCB version is 20080202, GTK GUI.

John


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Re: gEDA-user: Silk text disappears when making a component

2008-03-30 Thread John Coppens
On Sun, 30 Mar 2008 20:30:58 -0400
DJ Delorie [EMAIL PROTECTED] wrote:

 Elements don't have a way of storing additional silkscreen text,
 sorry.

Thanks for the fast reply, DJ. I have a footprint for RJ45, but it can
be used for connector with top or bottom contacts. I wanted to make two
footprints each with an appropiate text, as I probably won't remember
after making a board. I'll put the text on the board manually.

Cheers
John


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gEDA-user: Strange (laser) print defects

2008-03-18 Thread John Coppens
Hi all.

Though this evidently is not a software defect, I'm wondering if someone
on the list knows the cause of this problem or experienced similar
effects.

I was testing another paper (touted by a local electronics magazine as
'ideal') for my quick-and-dirty toner-transfer PCBs, and found a strange
defect, hard to describe. (see: http://jcoppens.com/misc/laser1.jpg and
http://jcoppens.com/misc/laser2.jpg )

The right part of each pic is normal typewriter paper, the left one is
on the new paper I'm testing. The faults are systematic:

- The appear always on the same spot in the board, independent from where
I print it on the sheet.

- They never appear on the 'normal' paper.

- Printer settings and source file is exactly the same, of course. (I did
experiment with different settings, but no difference was noted on the
printout).

First feeling was that some particle on the paper surface 'exploded', and
blew away the toner before it got fixated. But this shouldn't happen
systematically on the same spot. Problems with the paper/toner
transport? They should show on both printouts, shouldn't they?

Ideas?
John


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Re: gEDA-user: Strange (laser) print defects

2008-03-18 Thread John Coppens
On Tue, 18 Mar 2008 09:46:41 -0700
Samuel A. Falvo II [EMAIL PROTECTED] wrote:

 Permission denied (403) errors when attempting to view the pictures.

Strange, just tested them (again), and they show fine.

John


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Re: gEDA-user: Strange (laser) print defects

2008-03-18 Thread John Coppens
On Tue, 18 Mar 2008 12:46:30 -0400
DJ Delorie [EMAIL PROTECTED] wrote:

 That's very bizzare.  It's the kind of thing I'd ask about on the
 Homebrew_PCBs yahoo group.  I've seen all sorts of defects using TT,
 but nothing systematic like that.

Ok... Didn't know about that group. Thanks for the hint.

 Have you tried rotating the board 90 degrees on the paper?  I wonder
 if there's a charge buildup or something in your printer, which
 interacts with the paper.

I haven't rotated yet, but I did change the position of the board
left/right with no change. Also, the image drum is 76 mm circumference,
and there's nothing printed 76 mm before the defect. It _does_ look like
a static problem. I'll do some more testing when I get more paper.

Thanks,
John


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Re: gEDA-user: Strange (laser) print defects

2008-03-18 Thread John Coppens
On Tue, 18 Mar 2008 14:09:30 -0400
Gene Heskett [EMAIL PROTECTED] wrote:

 I'm thinking there might be a liquid 
 buildup there that would spatter away as the heat was applied to this
 much less porous medium, particularly if the heating effect at that
 point was coming in at an angle. 

Neither the paper nor the toner contain any liquid, so that ouldn't be
the source (If the paper were the source of the problem, it wouldn't
repeat on the same spot. The problem _is_ pre-fixating, as those
mini-clouds are fixated. I'm somewhat miffed at the problem - my quick 'n
dirty process is failing badly here (at least the quick part).

Anyway, the density change is a good idea, and I'll try to get some more
sheet tomorrow. Thanks!

John


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gEDA-user: Buffer copy disappeared?

2008-02-27 Thread John Coppens
Hello all.

Just installed the latest release of PCB, 20080202, and find that 'copy
selection to buffer' disappeared. Can't find a reference to that in the
CHANGES file, so I'm suspecting I did something wrong.

(I'm using the GTK GUI)

John


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Re: gEDA-user: Buffer copy disappeared?

2008-02-27 Thread John Coppens
On Wed, 27 Feb 2008 13:00:58 -0500
DJ Delorie [EMAIL PROTECTED] wrote:

 It's not in the Edit menu, with all the other cut/copy/paste options?

Yeah, it is... But it isn't in the Buffer menu anymore, where I used to
find it ;-)  In fact, I can't remember I _ever_ used the ones in the Edit
menu.

Thanks,
John


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Re: gEDA-user: www.gedasymbols.org unreachable?

2007-12-02 Thread John Coppens
On Sun, 2 Dec 2007 10:12:08 -0800 (PST)
Michael Stovenour [EMAIL PROTECTED] wrote:

 Anyone else having trouble reaching http://www.gedasymbols.org/?  I was
 just on it this morning, but now it appears unreachable.

Yep - won't work here either.

John


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Re: gEDA-user: firmware and the GPL license

2007-11-15 Thread John Coppens
On Thu, 15 Nov 2007 11:34:38 -0500
Randall Nortman [EMAIL PROTECTED] wrote:

 The users will never take them up on it.  Instead of using
 uClibc, they will just write their own code from scratch or purchase
 proprietary libraries.

It's not the users that have to have access to the code. After all, 99
% of GIMP/Firefox/etc users will never consult the code.

It's developers, if they want to build on a derived work. So, in terms
of the GPS license, it would be enough to mention somewhere the site
where the source code can be downloaded. Even on a lightbulb, it could be
printed on the packing.

John


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gEDA-user: PCB woes

2007-10-24 Thread John Coppens
Hello all.

I don't want to sound unappreciative of all the work put into gEDA a
particularly in PCB, I do appreciate it.

Only, I wonder if someone uses the latest PCB (20070912) and it works for
him/her? There are a lot of issues with cursor movements etc, which make
it basically unusable. I've tried CVS, but it responds the same. I filed
a bug against PCB, but, appart from a confirmation from another user
reporting the same, I had no reaction to the report. (bugs 1796016 and
1796012 - though the last bug hasn't reappeared yet).

I've started to try and analyze how the program works, but it is somewhat
beyond my programming skills... Still, I'll have another go. Maybe someone
can indicate where to start looking?

Thanks,
John


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gEDA-user: Suggestion for DJ

2007-09-26 Thread John Coppens
Hi...

I just played around with background images in PCB, which works fine. It
took some work, because of documentation problems.

DJ: I'd suggest adding a comment on you 'background image' page,
telling that it is possible to change the board size _after_ starting pcb
--bg-image xxx The image will then adapt to the new board size. 

Else, maybe some confusion might appear, as the ps/pdf docs with PCB say
it's possible to define the size on startup, but those commands are not
accepted (--size doesn't work). The help page that appears running pcb,
doesn't seem to provide an alternative to pre-define the board size.

In fact, it might even be simpler _not_ to scale/crop the original image,
but just measure two known points (corners) and then change pcb's size
setting to make the image scale right.

Cheers,
John


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Re: gEDA-user: pcb-20070912

2007-09-16 Thread John Coppens
On Sat, 15 Sep 2007 22:21:30 -0400
Dan McMahill [EMAIL PROTECTED] wrote:

  When I call the command window with ':', it appears without the text
  entry field (Dropdown and Close buttons are there). When I press the
  dropdown button, _crash_ - pcb disappears!
  
  John
 
 wierd.  I'm not able to reproduce this.  I get the entry and no crash. 
 Which GUI are you using?  Lesstif or Gtk?  What happens if you go into 
 the preferences-general tab and turn off the separate command window 
 option?
 
 Can you get a back trace on the crash?
 

Hi Dan.

Another day, no more crashes. I'll try more later today. Maybe they
appear after a while of usage (as they did they other day).

There are a few suspicious messages I hadn't seen because I normally
don't call PCB from a terminal.

1) When opening the 'Open file' dialog, I get four times:

*** attempt to put segment in horiz list twice

2) When toggling the unit button, I get (not the first time):

(pcb:20034): Gtk-CRITICAL **: gtk_toggle_action_set_active: assertion
`GTK_IS_TOGGLE_ACTION (action)' failed handle_grid_units_change()
get_grid_value_index()
get_grid_value_index()

(pcb:20034): Gtk-CRITICAL **: gtk_toggle_action_set_active: assertion
`GTK_IS_TOGGLE_ACTION (action)' failed

I'll try to re-crash this evening.

Thanks,
John


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Re: gEDA-user: PCB snapshot 20070912 -- Small bug in GTK GUI

2007-09-15 Thread John Coppens
On Fri, 14 Sep 2007 22:36:05 +0200
Stefan Salewski [EMAIL PROTECTED] wrote:

 When I have a pcb main-window smaller than the screen size and move the
 mouse pointer (activated select tool) out of the window, in some cases
 the inner of the window (footprints, autorouted traces, ...) is moved
 about 30% of window size.

In fact, this moving (jumping around) happens quite a lot, as far as I
can see only when not maximized:

If you paste a buffer to the screen, and move it around, the window
auto-shifts when moving to the border, but only once. Click (to fix the
component), then touch the scrollbar and the window jumps back to the
position before the autoshift.

Though it's hardly a major bug, it does gets on the nerves after a while.

John


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Re: gEDA-user: PCB snapshot 20070912 -- Small bug in GTK GUI

2007-09-15 Thread John Coppens
On Sat, 15 Sep 2007 10:47:12 -0300
John Coppens [EMAIL PROTECTED] wrote:

 In fact, this moving (jumping around) happens quite a lot, as far as I
 can see only when not maximized:

Just found another one (also maximized):

If you use the select window to select an area, autopan occurs when
pushing a side of the window. But touching the scrollbar jumps back to
the original location, which doesn't feel right.

Another problem:

Pressing Ctl (no other key), causes scrolling, if the cursor is on the
scrollbar. Is this correct? I use Ctl-Alt {Left arrow/Right arrow} a lot
to change workspaces, and this does cause some confusion. Touching the
scrollbar jumps back to the original position again.

Greetings,
John


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Re: gEDA-user: pcb-20070912

2007-09-15 Thread John Coppens
On Wed, 12 Sep 2007 23:25:20 -0400
Dan McMahill [EMAIL PROTECTED] wrote:

 I just uploaded a new pcb snapshot to the sourceforge download area.
 My goal is to make the next one in closer to 3 months from now instead
 of having a 7 month gap like this last time.

Wow... A big one.

When I call the command window with ':', it appears without the text
entry field (Dropdown and Close buttons are there). When I press the
dropdown button, _crash_ - pcb disappears!

John


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Re: gEDA-user: buzzing board

2007-09-13 Thread John Coppens
On Thu, 13 Sep 2007 11:38:57 -0400
DJ Delorie [EMAIL PROTECTED] wrote:

  Did you cheap out on the inductor?
 
 Not that I'm aware of.  I used these:

By far the most probable cause is the inductor. I've made quite a few
switchers, and several of them caused problems. I'm not so preoccupied
with the noise by itself, but more by the possibility this may cause
chafing and shorts on the long haul.

The buzzing may appear only if a certain load (lower _or_ higher) is
placed on the supply, as the switcher frequency passes through some
resonance in the windings (even they should ideally be impregated). Even
'fixed frequency' switchers vary a little...

John


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gEDA-user: Layer inversion

2007-09-13 Thread John Coppens
Hi all...

I use PCB irregularly, mostly with all the defaults in place. Today, I
was drawing a board where I wanted to add a text on the solder side. I've
done that a lot of times, each time with the text mirrored, and never
bothered to check why.

Today the threshold was reached and I searched on the net, and found DJ's
note on the assignment of layers to groups. Solved...

But - I had never even seen that window before, much less changed it, so
how did this happen? Is there some logic for having the components
assigned to solder side and vice versa, by default?

John


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Re: gEDA-user: buzzing board

2007-09-13 Thread John Coppens
On Thu, 13 Sep 2007 17:23:56 -0400
DJ Delorie [EMAIL PROTECTED] wrote:

 The only thing on the bottom of the board is a couple of bypass caps
 (most are on the top) and some of the ethernet bias circuitry.

The ethernet uses a galvanic isolation power supply? One of those XXv to
9v DC converters? Tried to eliminate that? It hasn't anything to do with
the oled circuitry though...

John


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Re: gEDA-user: Antenna Simulation

2007-04-19 Thread John Coppens
On Thu, 19 Apr 2007 16:09:58 -0400
DJ Delorie [EMAIL PROTECTED] wrote:

 Not getting into my site wasn't *your* bad luck!

Yes... Of course I should've chosen my words a bit more carefully.

My apologies!

John


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Re: gEDA-user: Antenna Simulation

2007-04-19 Thread John Coppens
On Thu, 19 Apr 2007 22:27:29 +0200
Stefan Dröge [EMAIL PROTECTED] wrote:


 
 I have no problem at accessing the site.
 
 Stefan

Thanks Stefan.

I accessed the site through an anonymizer and had no problem. Probably
some countries are blocked at that server.

John


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Re: gEDA-user: DJ's back

2007-04-18 Thread John Coppens
On Wed, 18 Apr 2007 12:12:51 -0400
DJ Delorie [EMAIL PROTECTED] wrote:

  Is the site down? I can't seem to connect...
 
 Major storm hit NH, taking out power, phones, internet, roads, a few
 houses, and at least one truck.  We're OK though, but at the peak
 there were close to 200,000 people without power in the area, mostly
 due to trees falling on power lines.  We were without power for 51
 hours, and without phone/internet for a little less than that.

Wow... Welcome back!

John


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Re: gEDA-user: home-made dremel drill press

2007-04-17 Thread John Coppens
On Mon, 16 Apr 2007 15:50:27 -0400
Darryl Gibson [EMAIL PROTECTED] wrote:

  Is the site down? I can't seem to connect...
 
 I'm getting unable to connect errors too.

Hmmm... I have the impression that DJ disappeared simultaneously!

John


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Re: gEDA-user: home-made dremel drill press

2007-04-16 Thread John Coppens
On Sun, 15 Apr 2007 12:36:32 -0400
DJ Delorie [EMAIL PROTECTED] wrote:

 http://www.delorie.com/pcb/dremel-stand/

Hi DJ.

Is the site down? I can't seem to connect...

John


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Re: gEDA-user: 4-bit_12-LED.png (PNG Image, 1024x768 pixels)

2007-04-02 Thread John Coppens
On Mon, 02 Apr 2007 15:03:08 -0700
william estrada [EMAIL PROTECTED] wrote:

I have made my first drawing using gEDA.  I have some questions about
 using gEDA.  In the drawing I used an 'arc' to jump over one of the
 'traces'.  Is the a better way to show that lines are not connected?

By definition, in modern diagrams, if two lines cross, they are _not_
connected. A connection is only there if a dot is seen on the crossing.

I haven't seen the arc-crossing for a while now. It probably takes just
too much time to draw that.

John


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Re: gEDA-user: gEDA Symbols

2007-03-06 Thread John Coppens
On Tue, 6 Mar 2007 13:18:02 -0400
Felipe Balbi [EMAIL PROTECTED] wrote:

 How can I create gEDA symbols for unsupported parts ??
 

Hi Felipe.

If you mean symbols for gschem, check this:

http://geda.seul.org/wiki/geda:faq-gschem

If you mean footprints for PCB:

http://www.brorson.com/gEDA/
http://geda.seul.org/wiki/geda:pcb_tips

John

(Maybe useful - in Spanish:
http://jcoppens.com/soft/howto/geda-spice/part3.php)


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Re: gEDA-user: C question

2007-03-03 Thread John Coppens
On Sat, 03 Mar 2007 13:31:06 +0100
Philipp Klaus Krause [EMAIL PROTECTED] wrote:

 static has two meanings: The one you mentioned for variables declared
 inside a function, the one Ben Jackson mentioned for variables declared
 outside a function.

Isn't internet great? Collaborative learning! Thanks Philipp - I had
never used 'static' in Ben's way.

John


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Re: gEDA-user: C question

2007-03-02 Thread John Coppens
On Sat, 03 Mar 2007 03:23:22 + (GMT)
[EMAIL PROTECTED] wrote:

 Look at the following:1) int bob[5] = {0x1, 0x2];2) int const bob[2] =
 {0x1, 0x2};3) static int const bob[2] = {0x1, 0x2};1  creates an
 initialized array in ram.2 creates a read-only array - presumably in
 ROMWhat does 3 do?  I think 3 compiles to a read-only area of ram.  Am
 I correct?gene

Though I can't image the reason to put this question on this forum,
here's what I think:

'Static' is normally reserved to specify the data should never be
destroyed by the compiler if the compiler thinks it's not necessary any
more (eg. to make data 'static', i.e. available between function calls to
the same function).

'const' means the program shouldn't be able to change it. Like you said,
make it read-only. 

John


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gEDA-user: gEDA installer

2006-11-23 Thread John Coppens
Hello all.

Changed machines rather unexpectedly, and the move didn't go well :-(

1) I could still run gschem  Co, but I found that selecting a couple of
components and hitting er (rotate) twice made it crash.

2) Before complaining, I thought I'd install the last version first, and
I thought I'd give the installer a try.

I mounted the ISO under a directory, and tried to run /mnt/iso/installer:
-
Traceback (most recent call last):
  File /usr/local/src/cx_Freeze-3.0.1/initscripts/Console.py, line 26,
in ? File /mnt/iso/installer.py, line 194, in ?

import gtk

  File /usr/lib/python2.4/site-packages/gtk-2.0/gtk/__init__.py, line
33, in ? ImportError: libgobject-2.0.so.0: cannot open shared object
file: No such file or directory
--
I searched inside installer.exe and the path seems to be hardcoded in the
executable as /usr, even though pygtk is installed in /usr/local here.

Is there some way around this?

John


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Re: gEDA-user: Increment drill size on 344 vias

2006-11-15 Thread John Coppens
On Wed, 15 Nov 2006 19:03:57 -0600
John Griessen [EMAIL PROTECTED] wrote:

 
 
 David Carr wrote:
  Quick question:
  
  I have a board with 344 vias that I'd like to increase in size from
  20 mils to 24 mils.
 
 Select them and any other non-via objects, but not the other size vias
 somehow. Maybe multiple area selects or one big one or select
 all...depending...
 
 In the pcb command window give the command  ChangeDrillSize
 (SelectedVias, 24, mil)  and if you want to make the annulus bigger
 too... ChangeSize(SelectedVias,44,mil)
 
 
 The pcb commands will take only vias from the selected set and change
 them.

That said, it _would_ be very helpful to have something else available
except the +/- 10 mils fixed step (not only for holes, also for track
widths etc). I would gladly sacrifice the +/- 10 options for a simple
dialog which asks for a new size. It doesn't make much sense to decrease
a 12 mil track by 10 mils anyway.

I'm not too experienced a programmer, but I'm willing to help out...

John


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Re: gEDA-user: Schottky diode?

2006-10-20 Thread John Coppens
On Fri, 20 Oct 2006 20:13:37 -0400
John Luciani [EMAIL PROTECTED] wrote:

 Since the DVI file is generated can you view it with xdvi? If you can
 I would think
 that the problem may be with fontmapping.

Sri... Hadn't noticed that the make script seems to remove the output
(dvi)? As far as I can see, 'acs-tutorial' is the only file that has
formatting instructions in it ('xcept for the man file).

From the configure log, I notice that it looks for 'hacha' and 'hevea',
which are not present. Could it be that it then still tries to generate
the docs, but actually needs these?

John


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Re: gEDA-user: Schottky diode?

2006-10-19 Thread John Coppens
On Wed, 18 Oct 2006 22:35:32 -0400
al davis [EMAIL PROTECTED] wrote:

 Why don't you try gnucap?  At least if it does have a problem I 

Al,

Several items:

1) On the GNU site, the latest distro is 0.31 and no indication that newer
versions exist. I can't compile this version...

2) Only later I detected 0.35 on the seul site. (Google still thinks the
gnu gnucap site is more important, so the 0.31 comes out first _ I do
think you should eliminate the 0.31 or upload 0.35 there).

This version stops compiling when there is a problem with the
documentation tools. I had to go into each directory and compile the
model compiler and gnucap separately. That worked.

3) Gnucap fails on my output.net file, reporting problems such as:

* gnetlist -g spice-sdb switch1.sch 
  egnd 99  0 poly(2) (3,0) (4,0) 0 .5 .5 
 ^ ? need 1 more nodes
  egnd 99  0 poly(2) (3,0) (4,0) 0 .5 .5 
   ^ ? what's this?
  fb7 99 poly(5) vb vc ve vlp vln 0 27.96E6  -30E6 30E6 
 ^ ? what's this?
  j1   11  2 10 jx 
  ^ ? illegal type
  j2   12  1 10 jx 
  ^ ? illegal type
.model jx NJF(Is=150.0E-9 Beta=4.568E-3  Vto=-1) 
 ^ ? not implemented
ic v(vlin)=0V 
 ^ ? need )
ic v(vlin)=0V 
 ^ ? what's this?
ic v(vlout)=0V 
 ^ ? need )
ic v(vlout)=0V 
 ^ ? what's this?

(Note that this works on ngspice)

4) Your mail server rejected my direct mail to you with the message:

[EMAIL PROTECTED]: host flint.freeelectron.net[68.61.120.207]
refused to talk to me: 550 HELO argument does not match calling host

This is probably an anti-spam measure, but it is the first time I had
this type of reject.

Greetings,
John


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Re: gEDA-user: Schottky diode?

2006-10-19 Thread John Coppens
On Fri, 20 Oct 2006 00:54:43 -0400
Dan McMahill [EMAIL PROTECTED] wrote:

 The problem is that on John's computer, something is messed up in the 
 latex installation so dvipdfm fails to find cmr17.tfm.

Ok... I have

-rw-r--r--  1 root root 1292 1995-08-14 15:29 
/usr/share/texmf/fonts/tfm/public/cm/cmr17.tfm

(rather old...)

Where do I check why it isn't recognised?

John


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gEDA-user: Some gschem/ngspice problems

2006-10-17 Thread John Coppens
Hi all.

1) I cannot get the 'spice-model' element to work... It just doesn't
  get included when calling gnetlist (no complaints either). I wanted to
  include a simple model for a switch.

  Also, the gEDA/SPICE tutorial mentions 'model' and 'type' attributes
  which are not available on the standard attribute list (like value,
  netname etc). Do I have to include them manually?

  I finally solved the problem adding the model to the switch itself.


2) Another version of the circuit causes:

  Found unknown component.  Refdes = L1

  L1 is an inductor, shown correctly on the schematic, and included in the
  generated netlist as:

  L1 vlin vlout 180u

  which I suppose is correct. Why the error message?

Thanks in advance,
John





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Re: gEDA-user: Some gschem/ngspice problems

2006-10-17 Thread John Coppens
On Tue, 17 Oct 2006 12:16:08 -0400 (EDT)
Stuart Brorson [EMAIL PROTECTED] wrote:

 Hi John --
 
  2) Another version of the circuit causes:
 
   Found unknown component.  Refdes = L1
 
   L1 is an inductor, shown correctly on the schematic, and included in
  the generated netlist as:
 
   L1 vlin vlout 180u
 
   which I suppose is correct. Why the error message?
 
 Is this in NGSpice?

Yes

 
 What happens if you make the value 180uH?

Same error message... (as before:) The inductor seems to work normally in
ngSPICE. In net file:

  L1 vlin vlout 180uH

Thanks
John


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gEDA-user: Schottky diode?

2006-10-17 Thread John Coppens
Hi all.

I was (trying to) simulate a switching power supply, and used the
'schottky' diode symbols, copied it, and added a model (1N5822 from
Motorola). After some experiments with strange results, could it be that
the diode pins are reversed? It did conduct the wrong way...

The normal 'diode' has anode=1, the schottky has anode=2...

John


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Re: gEDA-user: Schottky diode?

2006-10-17 Thread John Coppens
On Tue, 17 Oct 2006 16:05:23 -0400 (EDT)
Stuart Brorson [EMAIL PROTECTED] wrote:

 The best way to know is to inspect the SPICE netlist.  There is no
 guarantee that the parts in the gEDA symbol library have the pins set
 up in the correct orientation.

That's why I reported it on the list - attached is the 'corrected'
symbol, to make it at least compatible with normal diodes and libraries.

John


schottky-1.sym
Description: Binary data


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Re: gEDA-user: SMD soldering challenge status

2006-08-05 Thread John Coppens
On Sat, 5 Aug 2006 09:34:20 -0400
DJ Delorie [EMAIL PROTECTED] wrote:

 Even just a little 555-based LED blinker or something would count
  as functional in this case, I think.
 
 0603 cap = 1 cent
 0603 led = 7 cents
 
 Even the venerable 555 is too expensive in the small sizes appropriate
 to this project (about $0.60).
 
 Now, if you can think of a circuit that uses a flip flop and some
 inverters, plus low-valued caps (even resistors cost 3x what caps
 cost), that might be feasible.

Yes - and think about being able instantly identify if the soldering was
successful or not by seeing the LED blink. 'Built-in diagnostics'...
That's at least worth another $.02?

John


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