Re: gEDA-user: Re: ground plane fill
When creating a copper fill you got (amongst other things) a drop down list of nets, and you chose which one you wanted the polygon connected to. This makes the connectivity dependent on the net, rather than some flag in the many bits of track on the board, which sort of made sense to me. I think to do this sanely, we'd need to add the feature whereby every line, arc, pin, and polygon know which net they're supposed to be connected to, regardless of the actual electrical connection. This is a big project, but it's been talked about a little. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Re: ground plane fill
On Feb 12, 2007, at 6:58 AM, Dan McMahill wrote: Peter Baxendale wrote: For that matter, why isn't it just automatic that lines and arcs in the same net as the polygon merge, and others clear? Well, before the poly exists, or before any lines connect to it, how do you know what net it belongs to? If the net is unknown, it would mean no polygons could ever connect to anything - they begin life not belonging to any net so all nets would be prohibited from connecting to them. I have to admit, this is one of the few aspects of Orcad I actually liked better than pcb. When creating a copper fill you got (amongst other things) a drop down list of nets, and you chose which one you wanted the polygon connected to. This makes the connectivity dependent on the net, rather than some flag in the many bits of track on the board, which sort of made sense to me. me too. Thats how it works in PCAD. And DXP, and Ultiboard/Electronics Workbench, and Mentor. I think it's the expected functionality. -a ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: [pcb] embedding raster image size in png exports
Can PCB export raster files like the png with an embedded image size so that print software can recognize a 1:1 scale? I can get images exported at the right raw pixel dimensions I want, but when I open them in other applications, they come up as 72 dpi, making them way out of scale, and usually auto-scaled to fit either the paper of the screen ... blah. Any advice on getting raw prints out of this beast at 1:1 would be great. Also, out of curiosity, what does xy-max that appears in the png export dialog in PCB do? Phil Taylor ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: [pcb] embedding raster image size in png exports
Also, out of curiosity, what does xy-max that appears in the png export dialog in PCB do? It limits the size of the image to NxN pixels, but maintains the aspect ratio. For example, if you set it to 400, a 6000x8000 mil board would yeild a 300x400 image, but a 6000x4500 board yeilds a 400x300 image. This is good for bulk-converting to web page thumbnails. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: Re: LED 100 != 5mm LED ?
On Sun, 11 Feb 2007 22:47:30 -0500, Dan McMahill wrote: and for some bizarre reason people seem to trust newlib footprints more apparently just because they don't use m4 at runtime. I trust only footprints I made myself and triple checked for consistency with the specs. Is this bizarre? ---(kaimartin)--- -- Kai-Martin Knaak http://lilalaser.de/blog ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: Re: ground plane fill
On Sun, 11 Feb 2007 21:26:26 -0500, DJ Delorie wrote: The default board flags have nothing to do with the GUI. Note that this *is* the default for new boards in pcb, but may not be the default in the template board used by gsch2pcb. Looks like I suspected the wrong component. Sorry for pointing the pun to the innocent ... ---(kaimartin)--- -- Kai-Martin Knaak http://lilalaser.de/blog ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: Re: ground plane fill
On Sun, 11 Feb 2007 21:03:51 -0500, Dan McMahill wrote: I am actually doing some work on the GTK GUI so it has not been totally abandoned. My project right now is restoring user customizable menus. Glad to hear. Even better, if the already working accel key customization would be persistent to the next session. I am sorry, to lack the knowledge and the resources to contribute a patch for this one :-| ---(kaimartin)--- -- Kai-Martin Knaak http://lilalaser.de/blog ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Re: LED 100 != 5mm LED ?
On 2/12/07, Kai-Martin Knaak [EMAIL PROTECTED] wrote: I trust only footprints I made myself and triple checked for consistency with the specs. Is this bizarre? It seems wasteful for all gEDA users to be doing this. Wouldn't you find this bizarre: I print only with fonts I made myself and triple checked for consistency. If I said that, you might consider me a control freak with too much time on my hands. For similar reasons, I think a board design application should come with a tested library of popular footprints. Now, having been burned a couple times by broken footprints in pcb, I now check closely before sending the board off. I think we can agree that this is an undesirable situation. (I also realize that footprint library maintenance is hard work, and I'm not volunteering.) Regards, Mark [EMAIL PROTECTED] -- You think that it is a secret, but it never has been one. - fortune cookie ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Re: LED 100 != 5mm LED ?
[snip] ... (I also realize that footprint library maintenance is hard work, and I'm not volunteering.) So the problems continue... Maintaining symbol or footprint libraries is hard, painful, error-prone, and no matter what is done sooner or later somebody's finger will be cooked on an inproperly wired chip, because somebody (developer or end user) made perhaps a valid but incorrect assumption. I've been batting around the idea in my head that I might take a _small_ subset of the existing symbols (resistors, caps, basic logic gates, etc..,, clean them up and make them all light) and create an official and tiny maintained symbol library that will be easier to maintain (there won't be much in these symbols; maybe make them more PCB friendly). The rest of the symbols will get banished to a contrib symbol package. I'm still on the fence if I want to do this, since some of the symbols in the library are actually quite respectable (due to the hard work of several developers). This idea has been discussed several times at Freedog meetings with mixed reception. -Ales ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Re: LED 100 != 5mm LED ?
On 2/12/07, Andy Peters [EMAIL PROTECTED] wrote: On Feb 12, 2007, at 6:29 PM, Mark Rages wrote: On 2/12/07, Kai-Martin Knaak [EMAIL PROTECTED] wrote: I trust only footprints I made myself and triple checked for consistency with the specs. Is this bizarre? It seems wasteful for all gEDA users to be doing this. I agree with this ... there's no point in reinventing the wheel. However, when an install of pcb comes with a warning that there are errors in the m4 libraries, yet doesn't say what footprints have errors (not to mention: why haven't these errors been fixed?), leads one to simply not trust the provided libraries at all. -a Yes, if there are errors, there should be a bug filed in the tracker at pcb.sf.net. That's what I did when I encountered footprint bugs, and they were fixed quickly. So maybe rather than a heroic effort to proofread all the footprints, we should encourage users to file bugs on them if they find a problem. Then the offending footprints can be fixed or removed. Regards, Mark [EMAIL PROTECTED] -- You think that it is a secret, but it never has been one. - fortune cookie ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
RE: gEDA-user: Re: LED 100 != 5mm LED ?
Hi Kai-Martin and all, Checking is OK, and always better than not checking. Double checking is for if you forgot that you have already checked ;-) Triple checking is for if you forgot that you have already double checked ... And I *know* that I'm making errors in my footprints, and sometimes even in correcting these errors in my footprints. Kind regards, Bert Timmerman. -- Don't repeat a mistake, There are so many new ones to make ;-) --8- -Oorspronkelijk bericht- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens Kai-Martin Knaak Verzonden: dinsdag 13 februari 2007 1:58 Aan: geda-user@seul.org Onderwerp: gEDA-user: Re: LED 100 != 5mm LED ? On Sun, 11 Feb 2007 22:47:30 -0500, Dan McMahill wrote: and for some bizarre reason people seem to trust newlib footprints more apparently just because they don't use m4 at runtime. I trust only footprints I made myself and triple checked for consistency with the specs. Is this bizarre? ---(kaimartin)--- -- Kai-Martin Knaak http://lilalaser.de/blog ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: [pcb] text line size fixed
I added the code needed to make text on the copper, silk, and pinout be constrained according to the right DRC rule (min line, min silk, or none). Now text on the screen looks just like text on the board. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: IEEE Spectrum DIY contest
Don't know how many of you saw it, but the Feb 2007 issue of IEEE
Spectrum announced a contest for home built electronics projects.
To enter send a brief description of your project and include an
estimate of how much it cost. Throw in a photo, a parts list, adn a
schematic. Mail them to: Spectrum/Make DIY Contest, 3 Park Ave., 17th
Floor, New York, NY 10016-5997, U.S.A. The entry deadline is March 15,
2007.
If you win, they do an article about your project in Spectrum and Make.
And they fly you out to San Francisco for May 19-20, 2007 for some DIY
electronics fair. Maker Faire.
\begin{shameless_promotion}
It would be most cool to see gEDA/gaf, pcb, gnucap, icarus verilog, etc
mentioned in such an article!
\end{shameless_promotion}
Good luck
-Dan (who has no official affiliation to the contest other than having
coughed up way too much money for IEEE dues over the last 18 years)
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gEDA-user: fabs vs clipper
Has anyone had a complex board fab'd using gerbers made with the new polygon clipper? The furnace controller has polygons on the internal layers, so I won't be able to visually inspect them to see if the data got interpreted right and plotted right. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Re: LED 100 != 5mm LED ?
On Feb 12, 2007, at 10:07 PM, Dan McMahill wrote: Andy Peters wrote: However, when an install of pcb comes with a warning that there are errors in the m4 libraries, yet doesn't say what footprints have errors (not to mention: why haven't these errors been fixed?), leads one to simply not trust the provided libraries at all. Could you point me to where that warning is? It needs to be updated. It's in the wiki: http://geda.seul.org/wiki/ geda:pcb_tips#how_do_pcb_s_footprints_work and I know I've seen it elsewhere. -a ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: www.66each.com
Advanced Circuits has a new special - three 4-layer boards for $66 each. 6/6, 15mil holes, up to 30 sq in, full mask/silk, 5 day lead. No panels, though. FYI this is the company whose tech guys helped us get PCB's gerber output correct. They're good folks. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: www.66each.com
On Tue, Feb 13, 2007 at 01:39:16AM -0500, DJ Delorie wrote: Advanced Circuits has a new special - three 4-layer boards for $66 each. 6/6, 15mil holes, up to 30 sq in, full mask/silk, 5 day lead. No panels, though. I've recently been shopping for 4 layer options. I haven't tried any of them yet, but the ones that look promising are: http://www.protoexpress.com/content/noTouch.jsp About the same as above, except 60 sq in and 4 day lead for $51/ea (3 min). And there's an intro offer at www.pcbnet.com for 4 layer 60 sq in, $50 with no minimum. But it is an intro offer... In fact, the larger board and 4 layers are what have me looking into gaf/pcb. -- Ben Jackson AD7GD [EMAIL PROTECTED] http://www.ben.com/ ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: www.66each.com
I've recently been shopping for 4 layer options. I haven't tried any of them yet, but the ones that look promising are: http://www.protoexpress.com/content/noTouch.jsp About the same as above, except 60 sq in and 4 day lead for $51/ea (3 min). protoexpress auto-adds copper thieving, which would mess up my isolation gaps (I've emailed them asking about it). I wanted to go with pcbex, but they're closed for the next two weeks. Other vendors on my list are: pcbfabexpress (25 mil minimum SMT pitch) and pcbpool (good if you only need one). BatchPCB.com recently added a 4-layer option, but the cost for my board is higher than the others. And there's an intro offer at www.pcbnet.com for 4 layer 60 sq in, $50 with no minimum. But it is an intro offer... And... company name required ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: www.66each.com
In fact, the larger board and 4 layers are what have me looking into gaf/pcb. PCB supports boards up to 32x32 for sure, and may support up to 1/4 mile per side. I've tested it at 53 or so layers, it can handle as many as you recompile it for but 16 is the default limit. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
