Hi John, I appreciate the feedback - I didn’t mean to imply that I wanted to build these to use an RCB-F9T on, rather I wanted to play with other receivers that do use the same footprint. These are devices I already have, and want to cleanly integrate with a Pi.
Thanks, John > On Jun 3, 2021, at 11:38 AM, John Ackermann N8UR <[email protected]> wrote: > > The RCB-F9T is definitely something *not* to emulate -- it uses an SMB > connector for the antenna (which no one else does) and it only has a 10 pin > header (on 2mm, not 2.54mm spacing) that provides only one TIMEPULSE output > and no EXTINT inputs. Why u-blox decided that was a good form factor is > beyond me. > > You might take a look at the Sparkfun carrier boards. They seem well thought > out. > > I've also done a ZED-F9T/P carrier board that I'd be happy to share designs > for; it's the opposite of the RCB in that it makes *everything* accessible. > I'll try to get the design files on my github (github.orb/n8ur) later today. > > Note that the ZED-F9 chips have multiple ground pads under the chip and can't > be hand soldered; you'd need to use an oven. > > John > ---- > > On 6/3/21 11:09 AM, John Miller via time-nuts wrote: >> Hello Everyone! >> I am interested in designing a Pi hat PCB to be compatible with a timing GPS >> PCB design that I have seen used in a number of places. I have found an >> “okay” digram, but if anyone has already made gerbers for this thing, I >> would greatly appreciate it. >> - Diagram: https://files.millerjs.org/misc/timing_board_PCB.jpg >> <https://files.millerjs.org/misc/timing_board_PCB.jpg> >> - LEA-M8T using this format: https://files.millerjs.org/misc/LEA_M8T.png >> <https://files.millerjs.org/misc/LEA_M8T.png> >> - Trimble Resolution T: >> https://files.millerjs.org/misc/trimble_resolution_t.png >> <https://files.millerjs.org/misc/trimble_resolution_t.png> >> Even the relatively new uBlox RCB-F9T uses it, calling it an “industry >> standard form factor” : >> https://www.u-blox.com/en/product/rcb-f9t-timing-board >> <https://www.u-blox.com/en/product/rcb-f9t-timing-board> >> In the RCB-F9T documentation they have a very nice diagram of the module >> that surely came out of something like Altium, but I can’t find any files to >> replicate it - https://files.millerjs.org/misc/RCB_F9T.png >> <https://files.millerjs.org/misc/RCB_F9T.png> >> Any help would be greatly appreciated, I think one of the biggest things >> holding me back here is that I simply don’t know what this form factor is >> called. >> Thanks in advance! >> John >> PS - My plan, once I get a hat design that works, is to make a mess of these >> PCBs and mail them out to everyone on this list that wants one for the cost >> of shipping. >> _______________________________________________ >> time-nuts mailing list -- [email protected] -- To unsubscribe send an >> email to [email protected] >> To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send an > email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
