Hi ! There is a very nice « in the middle choice » for PCB schematics/routing/auto-routing/emulation(spice) between free and non free (commercial) softwares, it is Boardmaker3 : The licence is affordable (350 € / year), and there is a Free version that can be used to check the designs. Boardmaker2, the older version, is completly free.
Adium is great but too expansive.
Regards,
Stman.
Le 17 janv. 2016 à 12:23, Randy Bush <ra...@psg.com> a écrit :
> tl;dr: if you will be using cryptech designs to make real products,
> would you prefer freeware schematic/layout software or
> professional level tools?
>
> the current schmatic in review [0] is done using eagle [1], a $500
> package (for multi-sheet multi-layer) at our scale of use. this choice
> was made for a number of reasons:
>
> o there is no better open source tool-set, and our design engineers
> think Eagle is the best low-cost chouce :(
>
> o we could easily afford it, but more important
>
> o we thought that it would widen the community using cryptech designs
> as hackers and pros would be able to adapt the designs usin tools
> affordable by all.
>
> but, as we move from schematic to layout, our engineers are feeling a
> bit of strain.
>
> "it is pretty limited, and it may be difficult do design Alpha with
> it, because even the simplest instrument for pin swapping doesn't
> work very well :("
>
> and
>
> "A rough analogy of our situation is that we have a thousand of
> screws in our product. They can be cross-threaded with a very cheap
> hand screw driver, that nearly everyone has at home, but it will take
> a very long time, because the instrument itself is rather primitive.
> This can also be done easily with a powered screwdriver, but people
> will have to buy it. I think, companies are refusing to work in
> EAGLE, because it would be tedious for their designers, like why use
> inconvenient instrument, when you can use a better tool to accomplish
> the same task faster?"
>
> on the other hand
>
> "What software we use have different ramifications for different
> potential downstream users of our designs."
>
> "If we ... go with Eagle, we better serve the long tail of hobbyists and
> people with few resources."
>
> For large potential users (e.g. big companies) ... this is
> indifferent - they would re-do our schematics/layout anyway."
>
> if we move to a more pro tool-set, there is a small chance we could do
> the layout in-house, giving us more control and maybe saving money. but
> we do not have the time to do it in eagle, so we will have to go out of
> house, and a pro design house may not use eagle anyway.
>
> randy
>
>
> [0] https://lists.cryptech.is/archives/tech/2015-December/002382.html
> https://lists.cryptech.is/archives/tech/2016-January/002406.html
>
> [1] http://www.cadsoftusa.com/eagle-pcb-design-software/
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