[time-nuts] Ublox 8T

ew ewkehren at aol.com
Thu Dec 10 23:24:01 UTC 2020 

Be careful NEO and LEA packages are not even close                                                                                                                                                                                                                                                                                      In a message dated 12/10/2020 5:26:10 PM Eastern Standard Time, paulswedb at gmail.com writes: 
As they say never mind. The 8 T has 1 more pin on each group.
Regards
paul

On Thu, Dec 10, 2020 at 5:16 PM paul swed <paulswedb at gmail.com> wrote:

> Hello to the group and it sounds like someone could create some empty
> boards.
> But I am curious. I looked at Allibaba and see that ublox NEO6 boards are
> available for little cost. Have not looked at the pinouts of the 8T to
> compare but might it be a case of removing a neo6 and replacing it with a
> 8T?
> I have an 8T on order so one way or another will need to do something.
> Regards
> Paul
> WB8TSL
>
> On Thu, Dec 10, 2020 at 10:31 AM Bob kb8tq <kb8tq at n1k.org> wrote:
>
>> Hi
>>
>> I’ve looked at several “you supply the components” outfits. Each time
>> I’ve dug into it,
>> the mechanics of supplying an adequate number of parts has been pretty
>> daunting.
>> None of the things I do is very “high volume” ( 10 is a lot of boards for
>> me ).
>>
>> Bob
>>
>> > On Dec 10, 2020, at 9:21 AM, Mark Goldberg <marklgoldberg at gmail.com>
>> wrote:
>> >
>> > If you have some volume, consider Small Batch Assembly:
>> >
>> > https://www.smallbatchassembly.com/
>> >
>> > They are not as cheap as the Chinese suppliers, but you can provide
>> > your own components, and it is run by a very helpful gentleman in the
>> > Washington DC area. I got the bare boards from OshPark and you can
>> > order your components from distributors and send them directly to
>> > Small Batch. I preferred using my own parts from known sources, but
>> > they have a stock of components also.
>> >
>> > Regards,
>> >
>> > Mark
>> >
>> > On Thu, Dec 10, 2020 at 6:43 AM Bob kb8tq <kb8tq at n1k.org> wrote:
>> >>
>> >> Hi
>> >>
>> >> If you have a board with many dozens of passive parts on it and
>> >> four or five IC’s getting all those passives down on the board *is*
>> >> very useful. Their price on typical passive parts is low enough that
>> >> the delivered cost is still very close to a bare board.
>> >>
>> >> If you do use odd IC’s you have to move quick. Get the board(s) laid
>> >> out and into them fast. Accept that you may not be in stock next week.
>> >> For things like three terminal regulators or run of the mill digital
>> stuff, they
>> >> seem to maintain a pretty good inventory. Yes, it will be in “their”
>> favorite
>> >> package ….
>> >>
>> >> Bob
>> >>
>> >>> On Dec 10, 2020, at 2:48 AM, Matthias Welwarsky <
>> time-nuts at welwarsky.de> wrote:
>> >>>
>> >>> On Mittwoch, 9. Dezember 2020 23:58:51 CET Bob kb8tq wrote:
>> >>>> One note: JLPCB is the only “fab + assembly” outfit I’ve tried.
>> Their boards
>> >>>> are no better / no worse than a lot of other board fab outfits. I
>> have no
>> >>>> idea how they compare to other assembly houses. My selection
>> criteria: “
>> >>>> are they the cheapest I can find?”
>> >>>
>> >>> Currently, you will not find any other fab+assembly service that is
>> as cheap
>> >>> and requiring (almost) no human intervention. For protoype runs with
>> two to
>> >>> five boards assembled there is no competition. I'd say even for 50
>> boards
>> >>> there isn't.
>> >>>
>> >>> The JLCPCB PCBs are ok, the biggest letdown is the solder mask. It's
>> just
>> >>> plain bad. It flakes off on the tiniest rub with a hot iron.
>> >>>
>> >>> The biggest obstacle for sure is the limited parts catalog. They have
>> a decent
>> >>> assortment of passives but almost all active parts come from the
>> "extended"
>> >>> listing (extra cost, 10 uniques only) and they may not stock the
>> footprint you
>> >>> want to use, and the wildly fluctuating inventory.
>> >>>
>> >>> I'm treating them mainly as a layer of convenience. I let them place
>> all the
>> >>> boring passives and maybe a few common actives, but I don't go out of
>> my way
>> >>> to design along their catalog only, knowing that they might not have
>> stock of
>> >>> all the parts anyway when I order the boards.
>> >>>
>> >>>
>> >>>
>> >>>
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>> >>
>> >>
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