[time-nuts] Ebay Huawei Ublox M8T Modules Warning

[Philip Gladstone]

What approaches have worked to pop these modules off the chopped board?

Philip

On Mon, Jan 11, 2021 at 10:15 AM paul swed <paulswedb at gmail.com> wrote:

> With respect to the cut boards they are about 5 layers and some of the
> layers are shorted by the cut. Perhaps sanding them down would allow the
> boards to be used directly. My luck at popping the module off the board has
> not been very successful so far.
> Regards
> Paul
>
> On Sun, Jan 10, 2021 at 10:03 PM Bob kb8tq <kb8tq at n1k.org> wrote:
>
> > Hi
> >
> > There appear to be a lot of the cut off boards. The assemblies may well
> be
> > usable “as is”. It’s too bad there aren’t more of them. At the price,
> they
> > are
> > (used to be) an attractive alternative.
> >
> > Bob
> >
> > > On Jan 10, 2021, at 8:41 PM, Didier Juges <shalimr9 at gmail.com> wrote:
> > >
> > > ebay seller Queen's Land sent me this picture of the back of the cut
> off
> > > board. Apparently they still have a bunch.
> > > https://www.ebay.com/usr/queen*s_land?ul_noapp=true
> > >
> > > Didier KO4BB
> > >
> > > On Sun, Jan 10, 2021 at 3:47 PM Bob kb8tq <kb8tq at n1k.org> wrote:
> > >
> > >> HI
> > >>
> > >> Looking a bit more closely at the remains of the “chopped up” boards
> > with
> > >> the M8T’s on them …
> > >> This board is *not* the source of those devices. What’s left of the
> > >> marking on those boards
> > >> does not line up with what’s on these (now sold out) boards.
> > >>
> > >> There seems to be at least one switching regulator on this board, a
> CPU
> > >> (with JTAG programming
> > >> connector ??),  and a fairly elaborate antenna bias / protection
> > circuit.
> > >> No idea what might be on the
> > >> back of the board.
> > >>
> > >> With any luck, they will get more of these in stock.
> > >>
> > >> Bob
> > >>
> > >>> On Jan 9, 2021, at 10:20 PM, Bob kb8tq <kb8tq at n1k.org> wrote:
> > >>>
> > >>> Hi
> > >>>
> > >>> Just for the sake of listing all the variations:
> > >>>
> > >>>
> > >>
> >
> https://www.ebay.com/itm/ON-SALE-U-BLOX-ublox-LEA-M8T-0-10-HUAWEI-GPS-Timing-Module-Board/333778776570?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
> > >> <
> > >>
> >
> https://www.ebay.com/itm/ON-SALE-U-BLOX-ublox-LEA-M8T-0-10-HUAWEI-GPS-Timing-Module-Board/333778776570?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
> > >>>
> > >>>
> > >>> Is the M8T on what I would *guess* is the original board. Simply from
> > >> looking at the picture I think
> > >>> you can guess pretty well what’s what on the board.
> > >>>
> > >>> Hint: If you buy quite a few …. errr … 10 … there s a pretty good
> > chance
> > >> that something more than
> > >>> 20% might get knocked off the price …. I bought a pretty large pile
> of
> > >> stuff so it’s not clear if that
> > >>> had some impact on what offers got accepted …..
> > >>>
> > >>> If that’s not your favorite RF connector on the board, there are
> SMA’s
> > >> that likely fit in the same footprint.
> > >>>
> > >>> Bob
> > >>>
> > >>>> On Jan 9, 2021, at 6:41 PM, Nigel gm8pzr via time-nuts <
> > >> time-nuts at lists.febo.com <mailto:time-nuts at lists.febo.com>> wrote:
> > >>>>
> > >>>> Hmmmm
> > >>>>
> > >>>>
> > >>>>
> > >>>> was kinda thinking that might be the case, perhaps time to hope they
> > >> weren't tested after all!
> > >>>>
> > >>>>
> > >>>>
> > >>>> Late here, will check tomorrow
> > >>>>
> > >>>>
> > >>>>
> > >>>> Nigel GM8PZR
> > >>>>
> > >>>>
> > >>>>
> > >>>> Hi
> > >>>>
> > >>>> The “normal chips” that should be inside the module all have
> something
> > >> like a 3.6V max supply rating on them.
> > >>>>
> > >>>> I would guess that 5V will melt a goodly number of them.
> > >>>>
> > >>>> Bob
> > >>>>
> > >>>> _______________________________________________
> > >>>> time-nuts mailing list -- time-nuts at lists.febo.com <mailto:
> > >> time-nuts at lists.febo.com>
> > >>>> To unsubscribe, go to
> > >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com <
> > >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com>
> > >>>> and follow the instructions there.
> > >>>
> > >>
> > >> _______________________________________________
> > >> time-nuts mailing list -- time-nuts at lists.febo.com
> > >> To unsubscribe, go to
> > >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > >> and follow the instructions there.
> > >>
> > > <M8T.jpg>_______________________________________________
> > > time-nuts mailing list -- time-nuts at lists.febo.com
> > > To unsubscribe, go to
> > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > > and follow the instructions there.
> >
> >
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at lists.febo.com
> > To unsubscribe, go to
> > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > and follow the instructions there.
> >
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe, go to
> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.
>