[time-nuts] OCXO Support Board

[Graham / KE9H]

Most of the PC board manufacturers run a rules check for your board against
their process capability.
I have had them catch some things from time to time that the design
tool missed.
For commercial business, I more rules checking is always better, but for
hobby and personal purposes, I think the combination is very adequate.
--- Graham


On Thu, May 14, 2020 at 12:26 PM Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> Going from “pro” layout tools to KiCad, the only big thing that seems to
> be missing is a “full feature” DRC (design rules check) process in KiCad.
> The tools I worked with in the past had much more fine grained rules
> checking
> features.
>
> Probably not a big deal for a basement project. It would have stopped
> things
> dead if we tried to run it at work. We had at least 4 layers of rules
> checking
> that ran before the board finally went out for fab …..
>
> Bob
>
> > On May 14, 2020, at 12:08 PM, Mike Ingle <finndmike62 at gmail.com> wrote:
> >
> > Hi All,
> >
> > I will second Bob's comment on choosing a program with PCB - Schematic
> > integration.  I can heartily recommend Kicad.  I own Altium designer, but
> > work remotely for an American firm from Germany.  The US office uses
> PADs.
> > We have finally agreed on projects going forward to both use Kicad.
> While
> > Altium designer is more mature, and a little smoother to use, all of the
> > programs have quirks, and require that you become familiar with them.  So
> > far I am not seeing any limitations in Kicad that would prevent getting
> > good boards made.  And, many  prototype oriented houses accept Kicad PCB
> > files directly (for example EUROCIRCUITS) , which saves you from
> generating
> > Gerbers and drill files.
> >
> > And Kicad just keeps getting better.
> >
> > -- mike
> >
> >
> >
> > On Thu, May 14, 2020 at 4:30 PM Bob kb8tq <kb8tq at n1k.org> wrote:
> >
> >> Hi
> >>
> >> I would toss in:
> >>
> >> If you are starting from scratch, pick a program that allows you to
> easily
> >> enter schematics as well as PCB layouts. Take the time to learn both
> sides
> >> of the program. That will give you an automated check between the
> schematic
> >> and the layout….. It also gives you a document to go back to / hand to
> >> others
> >> to show what the board was intended to do.
> >>
> >> Bob
> >>
> >>> On May 14, 2020, at 5:51 AM, ew via time-nuts <
> time-nuts at lists.febo.com>
> >> wrote:
> >>>
> >>> Thanks Mark for reminding me, spend 3 hours this morning reviewing
> >> designs to be released. Found a couple of problems. Also went back to
> look
> >> at the OCXO boards I released in 2018, found a problem on the board
> with no
> >> Amp, the SMA is not grounded. Easy to fix, but if some one wants new
> Gerber
> >> will publish it.Always try to have a third party check my designs. To
> many
> >> designs 30 this year.
> >>> Bert Kehren
> >>> In a message dated 5/13/2020 10:18:33 PM Eastern Standard Time,
> >> holrum at hotmail.com writes:
> >>>
> >>> One thing that I recommend is that after completing the layout is to:1)
> >> step back and wait a few days2) enjoy a few adult beverages while
> waiting3)
> >> go back a re-check everything4) send it out to the board house
> >>> You'd be surprised how often simple, subtle, not so subtle
> >> glitches/tweaks/improvements show up after a pause in the process.
> >>> ---------------
> >>>> Once you get going, a board is a weekend project. Indeed, a simple
> >> board might be anevening project. There’s not a lot involved.
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