I am mindful about 1588v2 - I just don't have an active market to sell to right now, and the level of engineering there is a bit more than I want to bite off unless I have a known market.
The usb to GPS device is easy to do, and definitely in the category of a weekend project, which is why it is likely to just happen. On Wed, Sep 6, 2017 at 10:22 PM, George Skorup <george.sko...@cbcast.com> wrote: > I'm down for buying a handful whenever you decide to make something. > > Output from the RackInjector management port and/or a dedicated device > could be extremely useful. Hmm. How about ieee1588v2 PTP? That would be > cool. > > On 9/6/2017 10:34 PM, Forrest Christian (List Account) wrote: > > My rough draft here is a USB-serial interface with an isolated DC-DC > converter and a isolated usb-serial interface, so you are at least mostly > electrically and opto isolated from the SBJ. Plug into a USB and then > power the SBJT. So USB to a small box, then cat5 to the SBJ. This is a > small enough and fun project that it will probably just happen and fairly > quickly - I need a few of these after the nightmare of the rackinjector > (think of it as a working vacation). > > I've also had on the todo a NTP all in one appliance, probably in the SBJ > or SB12 box. That same code would make it into the rackinjector and any > followon similar products. There are quite a few things ahead of it on > the roadmap though... > > On Wed, Sep 6, 2017 at 2:45 PM, George Skorup <george.sko...@cbcast.com> > wrote: > >> Apparently there are USB sticks that are basically a GPS receiver and a >> PL2303 for $30-40. So you get the date/time. Cool. Then they take the 1PPS >> output to blink a f***ing LED. Really!? I was reading some blogs where >> folks have opened them up and wired a super tiny jumper from 1PPS to DCD. >> That was about 5-6 years ago using older SiRF receivers, too. Meh. >> >> A GPS+GLONASS SBJ basic and USB kit would be pretty cool. Could the USB >> interface also power the box, up to say 20-25 feet? The other thing is, all >> of the machines I'm working with have a serial port. So maybe just skip the >> USB altogether? >> >> I was thinking, maybe take the daisy-chain output from a >> SyncInjector/PowerInjector/RackInjector since those switch the pipe/box >> to NMEA anyway, but I don't think I'd want a path from the tower-mounted >> gear to server(s). And other funky stuff like noise making it into the >> timing for the radios would be ungood. >> >> On 9/6/2017 2:10 AM, Forrest Christian (List Account) wrote: >> >> I could tell you how to wire a syncbox junior up to a usb port if you'd >> like. Requires a TTL level usb to serial cable. >> >> I'd you wait a month or so until the gps+glonass version is out it well >> even speak nmea. Heck, now I think about this it might make a good >> product.... syncbox basic plus a USB dongle. >> >> On Sep 5, 2017 8:19 PM, "George Skorup" <george.sko...@cbcast.com> wrote: >> >>> I've got a few CentOS machines running around the network doing various >>> tasks, one being NTP for radios, routers, switches, etc. I've been having >>> some issues with us.pool.ntp.org lately. I switched to time-(a,b,c,d). >>> nist.gov. Apparently those are pretty busy. >>> >>> So is anyone else using GPS to feed NTPd? From what I've been reading, I >>> guess I need a 1PPS capable receiver. Does that exist in a simple USB >>> package? That would be ideal, preferably with an SMA female for an external >>> antenna where needed. Looks like none of the cheap shit I'm finding on >>> Amazon has PPS output. >>> >> >> > > > -- > *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* > Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 > forre...@imach.com | http://www.packetflux.com > <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> > <http://twitter.com/@packetflux> > > > -- *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 forre...@imach.com | http://www.packetflux.com <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> <http://twitter.com/@packetflux>
