https://hackaday.com/2017/09/12/hackaday-prize-entry-retrofit-a-nokia/ https://hackaday.io/project/21263-nokia-3210-retro-fit-board
Quote from the project log: "With the patched I submitted you can turn KiCad into a 'I know what I am doing' mode. Which meas you can place any type of via anywhere. You should not do it though. Vias are pretty well constraint by the manufacturer of the board. Since KiCad does not know of any layer thickness, production technologies and such it restricts to what is a sensible lowest common denominator."
Hmm so KiCad does not have a "PCB manufacturer constraints" input? How handy... NOT
Hi Mike,
On 9/15/17, mike.valk@gmail.com mike.valk@gmail.com wrote:
https://hackaday.com/2017/09/12/hackaday-prize-entry-retrofit-a-nokia/ https://hackaday.io/project/21263-nokia-3210-retro-fit-board
Quote from the project log: "With the patched I submitted you can turn KiCad into a 'I know what I am doing' mode. Which meas you can place any type of via anywhere. You should not do it though. Vias are pretty well constraint by the manufacturer of the board. Since KiCad does not know of any layer thickness, production technologies and such it restricts to what is a sensible lowest common denominator."
Hmm so KiCad does not have a "PCB manufacturer constraints" input? How handy... NOT
Of course it has. But you need to realize that even Gerber doesn't have advanced information you need for more complex designs (i.e PCB dozens of layers with different type of impedance, etc). For that you need an EDA with IPC-2581 support that even Eagle (AFAIK) doesn't have and many other commercial EDAs also don't.
BR,
Alan
Of course it has. But you need to realize that even Gerber doesn't have advanced information you need for more complex designs (i.e PCB dozens of layers with different type of impedance, etc). For that you need an EDA with IPC-2581 support that even Eagle (AFAIK) doesn't have and many other commercial EDAs also don't.
Impedance has no connection to gerbers. You agree with manufacturer PCB type (thickens of prepag for each layer) and based on that you calculate thickness of line to meet certain impedance. It is totally designers responsibility.
On 9/16/17, Hrvoje Lasic lasich@gmail.com wrote:
Impedance has no connection to gerbers. You agree with manufacturer PCB type (thickens of prepag for each layer) and based on that you calculate thickness of line to meet certain impedance. It is totally designers responsibility.
It is true for Gerber! That what I said! See page 5:
http://www.ipc2581.com/Samples/Consortium-Update%20on%20IPC-2581-V3.pdf
BR,
Alan
On Fri, Sep 15, 2017 at 9:16 AM, Alan Carvalho de Assis acassis@gmail.com wrote:
For that you need an EDA with IPC-2581 support that even Eagle (AFAIK) doesn't have
Although IPC-2581 is pretty new I think it's a great idea. A lot of board houses are apparently starting to request this from customers although I've never come across it. I'd be thrilled if all of the EDA packages started to support it.
Some folks have asked the support team at EAGLE about it, over the years:
https://www.element14.com/community/thread/14080/l/support-for-ipc-2581?disp...
Translation: We'll promise to ask our management, and never get back to you...
Now, after the acquisiton by Autodesk:
https://forums.autodesk.com/t5/eagle-forum/ipc-2581/td-p/7336057
Translation: No current plans to do it, no date given, but gives a Machiavellian "Keep your eyes peeled" corporate comment.
On Fri, Sep 15, 2017 at 9:00 AM, mike.valk@gmail.com mike.valk@gmail.com wrote:
Hmm so KiCad does not have a "PCB manufacturer constraints" input? How handy... NOT
i've just started hacking on a 2-layer 4in x 2.5in PCB with eagle (pre-existing, GPLv3) and hoolyy cow is it.... i mean it's a successful program, it works, it generates gerbers and so on but jesus christ is it utterly painful to use. no push-and-shove (at least kicad has that now), you can't just "select" something, you have to "Move" it first then and only then can you modify its properties by right-mouse-buttoning on it... only problem is.... you moved it....
group selection goes wrong on a constant utterly painful monotonous basis...
i'm sort of amazed and impressed that people actually get things done with it.
l.
arm-netbook@lists.phcomp.co.uk
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Alan Carvalho de Assis -
Hrvoje Lasic -
Luke Kenneth Casson Leighton -
mike.valk＠gmail.com -
Neil Jansen