if you are considering the MAX Series of chip i just posted this version I’ve been using for my own NTP sources for pool.org servers board i designed for the beablebone should be cheap enough to get made if someone wants to, or if you are in Australia i can ship boards cheap enough
https://github.com/hewball/uBlox-GPS-Cape Brenton > On 12 Jul 2016, at 8:32 AM, Bob Camp <[email protected]> wrote: > > Hi > > The T version makes it easy to get at the sawtooth correction on the pps. > That lets you go from 10’s of ns on the pps to below 1 ns. All of that is a > bit beyond the response speed of a Nixie tube.:). It also takes an MCU to > work out what’s going on and some way to incorporate the correction in > the output. > > Bob >> On Jul 11, 2016, at 7:54 PM, John Swenson <[email protected]> wrote: >> >> I take it the "T" is a time specific version, I see there is also a NEO M8T, >> I presume this include the position hold etc? >> >> This: >> http://www.csgshop.com/product.php?id_product=218 >> >> Seems like an interesting board with a NEO-M8T, a UF.L antenna connector. >> The little breakout board gives a direct USB interface as well as timing >> signals. With the USB it looks like it should work with the U-center >> software for evaluation and configuration which would probably make it >> easier to get going. >> >> Does this seem like a reasonable board to get? >> >> Thanks, >> >> John S. >> >> >> >> On 7/11/2016 8:49 AM, Mark Sims wrote: >>> One thing to consider about using a module with a built-in ceramic patch >>> antenna is that usually the antenna cannot be removed and the modules have >>> no support for an external antenna. If you do have problems getting a >>> signal it can be very difficult to add an external antenna. You might >>> want to try moving one around the house and seeing how well it works. It >>> usually takes an indoor GPS a while to acquire lock to the GPS satellites. >>> >>> If you want a time-nutty-ish GPS receiver, search Ebay for "Ublox LEA6T". >>> There are some units available from China that have one (plus a ceramic >>> antenna) in them for a decent price ($30). Normally an LEA-6T GPS receiver >>> is over $100... But to get the full benefit of a GPS timing receiver >>> requires quite a bit of configuration and setup. >>> >>> Another receiver worth looking into is one from the Ublox 8 series. They >>> can track and work with GPS, Glonass, Beidou, and other nav systems. Mine >>> is currently tracking 25 satellites (GPS/GLONASS/SBAS) with an indoor >>> antenna. It cost around $25 and came with a removable antenna. It has two >>> programmable PPS outputs (only one is brought out to the connector)... you >>> can set one to 10 KHz. >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
