Any thoughts/comments on this Punky?
On Mon, 2007-12-10 at 14:33 -0500, Mark Phillips wrote: > I have mine setup in a similar way but it is not a true time server in > that because of the lack of a disciplining kick on a regular basis it is > able to drift between time updates. > > The problem with NMEA time strings is that they tend to come in a > cluster and not at all every second or 3 seconds or 5 seconds. They come > along whenever the GPS processor has time to spit them out. > > The 1PPS pulse from the GPS system is not derived from the decoded data > but rather is an inherant component of the GPS signal along with the > 10KHz pulse and thus is more reliable. > > I'd still like to see a 1PPS patched kernel particularly as it would > then allow for connections to things like Frequency Standards and LORAN > RX's etc. Heck, one could even connect it up to the mains after a very > simple signal divider (trick used on clock radios etc) is added. > > Mark > > On Thu, 2007-12-06 at 19:24 +0800, Kim-man 'Punky' TSE wrote: > > Hi guys, > > > > Forget to mention, I have setup voyage attached to Garmin GPS18/USB and > > get NTP time sync'd. Of course, this device is not PPS-capable, but it > > works without any patch to the kernel and NTP daemon. See my blog article: > > > > http://www.punknix.com/?q=node/116 > > > > Regards, > > Punky > > > > Mark Phillips wrote: > > > Now I think about it, updating the gpsd package would also be useful for > > > this purpose. > > > > > > FYI, my NTP server is running Voyage on a Neoware N3000 thin client > > > (ebay $20). It has a 300MHz via processor in it as well as an IDE > > > interface which is now running a CF card. The GPS RX plugs into ttyS0 > > > and I'm running gpspipe on ttyS1 to allow my Nixie tube clock to correct > > > itself. > > > > > > Mark > > > > > > On Fri, 2007-11-30 at 05:10 +0000, Clark wrote: > > > > > >> Mark Phillips <[EMAIL PROTECTED]> writes: > > >> > > >> > > >>> Hi all, > > >>> > > >>> Is there anywhere that I can register a feature request for adding PPS > > >>> to the kernel for use in NTP apps? This would be really handy I think. > > >>> > > >>> Thanks > > >>> > > >>> Mark > > >>> > > >>> > > >> I would really like that too! > > >> > > >> I have been using Voyage to try to create an NTP appliance 'cause the > > >> commercial ones are WAY beyond my budget! > > >> > > >> I appreciate the work on Voyage so far! > > >> > > >> Thanks! > > >> > > >> > > >> _______________________________________________ > > >> Voyage-linux mailing list > > >> [email protected] > > >> http://list.voyage.hk/mailman/listinfo/voyage-linux > > >> > > > > -- Mark Phillips, G7LTT/NI2O Randolph, NJ _______________________________________________ Voyage-linux mailing list [email protected] http://list.voyage.hk/mailman/listinfo/voyage-linux
