[time-nuts] KS-24361 REF-0 standalone

[paul swed]

Dan exactly my thinking.
I will guess it wants the string that says I have a 3d position lock.
Something like @@ and 30-40 characters that would be fixed.I think there is
a CRC at the end. But all of the message can be copied from a real oncore
or simply monitor what comes out of the KS GPS unit. Hard to say whats
needed but a good discussion. Be it any number of uProcs they can all
easily do a fixed string.
Regards
Paul
WB8TSL

On Fri, Aug 7, 2015 at 5:13 PM, D W <watsondaniel3 at gmail.com> wrote:

> Yes, I'm hoping that it just wants a dummy string to say GPS is ok, and
> doesn't actually use any information in it. If that's the case, code can be
> developed for PIC and AVR that will work for just about anyone, using a ~$1
> chip.
>
> Even if the string does need to contain real GPS info, it should still be
> quite easy to do.
>
> A while back I wrote some code to parse the serial string from a Jupiter-T
> and display the information on a 4 line LCD display. It worked very nicely
> but I never did anything useful with it. I think I'll take Bob's notes and
> incorporate the REF-0. That would make for a very compact setup.
>
> Dan
>
> > On Aug 7, 2015, at 2:06 PM, paul swed <paulswedb at gmail.com> wrote:
> >
> > Looking forward to the notes.
> > Yes it could be fairly simple if what ref 0 wants is a string that
> > essentially says the system is fixed with 3 d accuracy. Perhaps after
> that
> > the ref 0 makes no checks other then the string keeps coming with the
> > correct quality. Not to push a particular proc but any of the low end
> ones
> > will do that stunt very easily.
> > That would be pretty sweet.
> > Paul
> > WB8TSL
> >
> >> On Fri, Aug 7, 2015 at 10:13 AM, Bob Camp <kb8tq at n1k.org> wrote:
> >>
> >> Hi
> >>
> >> Ok, I will write something up and post it here. It will probably take a
> >> few days
> >> to get it all into a form that answers most of the questions.
> >>
> >> What you will need:
> >>
> >> 1) A working REF-0
> >> 2) A PIC or other micro to get things going
> >> 3) A GPS with a PPS output (any will do)
> >> 4) Code specific to your GPS and the needs of the REF-0
> >>
> >> Since the Oncore needs to be set up each time it’s booted, there is no
> real
> >> advantage to using one. You still need an MCU in the mix.
> >>
> >> More to follow.
> >>
> >> Bob
> >>
> >>> On Aug 7, 2015, at 5:24 AM, Graham <planophore at aei.ca> wrote:
> >>>
> >>> Bob,
> >>>
> >>> I would like that information too please and thank you.
> >>>
> >>> I have a pair that is working quite well and I also have a second REF-0
> >> that I want to start testing but just haven't got round to it yet to
> figure
> >> out what is needed.
> >>>
> >>> cheers, Graham ve3gtc
> >>>
> >>>
> >>>> On 2015-08-07 02:39, Bob Camp wrote:
> >>>> Hi
> >>>>
> >>>> You need to get the Oncore running with the correct position locked in
> >> and spitting out the right strings.
> >>>> That’s all done by the CPU in the REF-1 unit. The REF-0 simply grabs
> >> the data off of the string
> >>>> as it comes by.
> >>>>
> >>>> I’ll see if I can dig out the information and send it to you off list.
> >> It’s buried around here somewhere.
> >>>>
> >>>> Bob
> >>>>
> >>>>> On Aug 6, 2015, at 10:02 PM, Edesio Costa e Silva <
> >> time-nuts at tardis.net.br> wrote:
> >>>>>
> >>>>> Thanks.
> >>>>>
> >>>>> I have some Motorola Oncore available.
> >>>>>
> >>>>> Can you detail this "fairly simple manipulation of the signal lines"?
> >>>>>
> >>>>> Regards,
> >>>>>
> >>>>> Edésio
> >>>>>
> >>>>>> On Thu, Aug 06, 2015 at 09:57:20PM -0400, Bob Camp wrote:
> >>>>>> Hi
> >>>>>>
> >>>>>> People got a bit ???excited??? about the level of KS box
> discussions.
> >> All of the work decoding
> >>>>>> the 15 pin connector and how to drive the REF-0 was taken off list.
> >>>>>>
> >>>>>> Simple answer:
> >>>>>>
> >>>>>> Yes you can run a REF-0 by it???s self. It needs a dummy string that
> >> looks like the output
> >>>>>> of a Motorola Oncore to feed it and some fairly simple manipulation
> >> of the signal lines.
> >>>>>> It will then quite happily discipline to the pps you feed it.
> >>>>>>
> >>>>>> Bob
> >>>>>>
> >>>>>>> On Aug 6, 2015, at 7:27 PM, Edesio Costa e Silva <
> >> time-nuts at tardis.net.br> wrote:
> >>>>>>>
> >>>>>>> Hello Fellows!
> >>>>>>>
> >>>>>>> Had anyone managed to run the KS-24361 REF-0, the one without GPS,
> >> as a
> >>>>>>> standalone unit? If so, can you provide some links on how to
> >> configure it?
> >>>>>>>
> >>>>>>> The reason to try this is cost. The REF-0 unit costs USD 25 + USD
> >> 52.30
> >>>>>>> (shipping to Brazil) and I have to pay the same amount as custom
> >> taxes.
> >>>>>>>
> >>>>>>> Right now the REF-0/REF-1 pair would be too expensive.
> >>>>>>>
> >>>>>>> Regards,
> >>>>>>>
> >>>>>>> Edésio
> >>>>>>> _______________________________________________
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