Hi I’ve used them as well. They are indeed *very* inexpensive and deliver quite good assembly on the boards. As with any assembly process, avoiding ultra small caps and resistors ( 0201 … 0402 …) will improve your chances. I have seen zero issues with parts in the 0603 and larger range. I have not seen any IC’s or semiconductors with issues.
Bob > On Dec 9, 2020, at 3:46 PM, Philip Gladstone > <[email protected]> wrote: > > I have used the assembly service from jlcpcb a few times for small runs -- > it is absurdly cheap *if* you are using common surface mount components and > cheap for the less common ones. I then hand solder the connectors on when I > get the boards. > > Philip > > On Wed, Dec 9, 2020 at 3:27 PM Matthias Welwarsky <[email protected]> > wrote: > >> On Mittwoch, 9. Dezember 2020 14:57:55 CET Bob kb8tq wrote: >>> Hi >>> >>> I think the key point is: >>> >>> *IF* somebody wants to do a layout using the M8T, Bert already *has* a >>> “known good” PCB layout footprint in his inventory of useful stuff. Since >>> the uBlox is a really odd part, you aren’t going to find that footprint >>> built into the standard layout programs. >> >> I have a known-good footprint and symbol for KiCAD, if anyone is >> interested. I >> also have KiCAD project for a small breakout board. It's not too >> featureful, >> no antenna power switching or monitoring, no support for antenna power >> other >> than from the built-in LDO. However, it has been successfully used in a >> GPSDO >> project. All components are hobbyist-friendly 0805, except for a LDO with >> SOT-23-5 footprint. >> >>> >>> Bob >>> >>>> On Dec 8, 2020, at 6:26 PM, Bill Notfaded <[email protected]> wrote: >>>> >>>> That's a really old board though. An 8 series isn't pin compatible >> with >>>> say LEA-6T is it? The picture had a 5 series in it. >>>> >>>> Could you use something like this? >>>> >> https://github.com/PaulZC/NEO-M8T_GNSS_FeatherWing/blob/master/LEARN.md >>>> >>>> Bill >>>> >>>> On Tue, Dec 8, 2020, 10:30 AM Gregory Beat via time-nuts < >>>> >>>> [email protected]> wrote: >>>>> There are various Breakout (bare) Boards for the uBlox modules posted >> on >>>>> Internet. >>>>> SparkFun has carried them, in the past, and sometimes sold the bare >>>>> boards >>>>> without the uBlox module. >>>>> https://www.sparkfun.com/products/15005 >>>>> >>>>> StuartsProjects (Stuart Robinson, Cardiff, UK) has a bare board for >> the >>>>> Ublox MAX M8Q module. Sold on Tindie, used in high-altitude balloon >>>>> projects. >>>>> >>>>> >> https://www.tindie.com/products/stuartsprojects/ublox-max-8mq-gps-breakou >>>>> t-board-x-2/ >>>>> >>>>> Contact Limor “Ladyada” Fried at Adafruit, she might have bare boards >> OR >>>>> Gerbers for earlier or future products. >>>>> https://www.adafruit.com/?q=gps+breakout&p=1&sort=BestMatch >>>>> >>>>> Dan Watson designed one, for the 6-series five years ago. >>>>> He sometimes posted Gerber files. >>>>> >>>>> >> http://syncchannel.blogspot.com/2015/09/a-nearly-perfect-u-blox-gps-break >>>>> out.html >>>>> >>>>> greg >>>>> w9gb >>>>> == >>>>> Date: Mon, 7 Dec 2020 09:47:55 -0500 >>>>> From: paul swed <[email protected]> >>>>> To: Discussion of precise time and frequency >>>>> >>>>> measurement <[email protected]> >>>>> >>>>> Subject: Re: [time-nuts] Ublox 8T >>>>> >>>>> Bert Very attractive price. They appear to be on a cut out circuit >> board. >>>>> How are you connecting to them please? >>>>> Regards >>>>> Paul. >>>>> WB8TSL >>>>> _______________________________________________ >>>>> time-nuts mailing list -- [email protected] >>>>> To unsubscribe, go to >>>>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >>>>> and follow the instructions there. >>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- [email protected] >>>> To unsubscribe, go to >>>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and >>>> follow the instructions there. >>> >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and >> follow >>> the instructions there. >> >> >> >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
