HI Bob I do not require timing on the USB at all
On Thu, Dec 5, 2019 at 6:00 PM Bob kb8tq <[email protected]> wrote: > Hi > > One timing issue could be that USB is not that great for timing. Since it > is > packet based it introduces jitter in the link. Running NTP on a > “traditional” > RPi is unlikely to produce numbers below a milisecond. > > Indeed I’m digging into that for what I’m working on ….. > > Bob > > > On Dec 5, 2019, at 12:09 AM, Anton Strydom <[email protected]> wrote: > > > > Good day Hal > > > > Thank you for your contribution > > > > The physical setup is as follows, each Rp1 has 2 or more cameras attached > > to it via a multiplexer or usb depending on the camera, there are a > number > > of V2 RPi and also a couple of USB cameras attached to some of the RPi's. > > All the equipment is powered by solar > > > > I will be able to run cable but it is going to be difficult plus the > > possibility that the cables and equipment attached to it will be stolen > is > > 100% hence the WiFi > > > > Yours sincerely > > > > Anton > > > > > > > > On Thu, Dec 5, 2019 at 3:01 AM Hal Murray <[email protected]> > wrote: > > > >> > >> [email protected] said: > >>> The cameras are pairs sitting on a multiplexer so the problem is not > the > >>> camera pair synchronization but the RPi synchronization > >> > >> I don't understand the physical setup. Is it possible to run a cable to > >> wherever you need good time? > >> > >> Even if that isn't practical in the long run, it might be useful for > >> experimenting. > >> > >> > >> -- > >> These are my opinions. I hate spam. > >> > >> > >> > >> > >> _______________________________________________ > >> 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.
