On Wed, May 4, 2016 at 2:08 AM, Hal Murray wrote:
>
> e...@thyrsus.com said:
> > Given the geometry it looks like it will handle a single HAT with the lid
> > on, though.
>
> I've seen one "case" that was 2 sheets of plastic and 4 posts in the
> corners.
> That left all sorts of room for cables
> Conveniently, the build doesn't require either USB or WiFi.
On a Pi, the Ethernet is on USB.
--
These are my opinions. I hate spam.
___
devel mailing list
devel@ntpsec.org
http://lists.ntpsec.org/mailman/listinfo/devel
e...@thyrsus.com said:
> Given the geometry it looks like it will handle a single HAT with the lid
> on, though.
The Adafruit GPS HAT fits fine with the lid on. I think you can get the
antenna cable out through the slot they left for a ribbon cable to hit the 40
pin GPIO connector. But I've
Yo Eric!
On Tue, 3 May 2016 23:21:02 -0400
"Eric S. Raymond" wrote:
> Gary E. Miller :
> > Yo Mark!
> >
> > On Tue, 03 May 2016 21:31:10 +
> > Mark Atwood wrote:
> >
> > > In a few weeks I will have a crate of the Navisys units. They do
> > > PPS over USB serial.
> >
> > I'd like on
Gary E. Miller :
> Yo Mark!
>
> On Tue, 03 May 2016 21:31:10 +
> Mark Atwood wrote:
>
> > In a few weeks I will have a crate of the Navisys units. They do PPS
> > over USB serial.
>
> I'd like one of the GR-701W for testing.
So would I. I don't expect it to be signbificantly different fr
Yo Dan!
On Tue, 3 May 2016 21:41:49 -0500
"Dan Poirot" wrote:
> USB 1.1 is good enough!
Better than a network time source, but not as good as I want. I can get
8x better jitter with USB 2.0.
> You got a jitter or latency problem you can't solve with 12 Mbit/sec,
> rock-solid on a point-to-po
Yo Hal!
On Tue, 03 May 2016 14:29:58 -0700
Hal Murray wrote:
> g...@rellim.com said:
> > Please, no GPS-18s. The Garmin Binary protocol is a mess and the
> > chip is over 10 years old with a weak sensitivity, no GLONASS,
> > etc. Many better GPS LVC solutions.
>
> The GPS-18x is only 5 yea
USB 1.1 is good enough!
You got a jitter or latency problem you can't solve with 12 Mbit/sec,
rock-solid on a point-to-point link?
...just don't put a USB floppy drive on the same bus!
;-)
-Original Message-
From: devel [mailto:devel-boun...@ntpsec.org] On Behalf Of Gary E. Miller
Yo Mark!
On Tue, 03 May 2016 21:31:10 +
Mark Atwood wrote:
> In a few weeks I will have a crate of the Navisys units. They do PPS
> over USB serial.
I'd like one of the GR-701W for testing.
I notice navisys.com now has a GR-801W, with uBlox 8. 72 channels with
GPS & QZSS (L1), GLONASS, B
The TI BeagleBoard had a similar issue plaguing early revisions. I seem to
recall a hardware spin on one component resolved the problem.
I have used both the BeagleBoard C3 and RaspPi B with Data Distribution System
(real-time, UDP pub/sub messaging) when I worked at RTI.
I never saw any
Yo Hal!
This discussion has motivated me to actually read up on adjtime() and friends.
On Tue, 03 May 2016 15:13:04 -0700
Hal Murray wrote:
> There are two RFCs describing PPS stuff.
>
> RFC 1589, 37 pages
> A Kernel Model for Precision Timekeeping
> https://tools.ietf.org/html/rfc1589
>
Hal Murray :
> > Hm. Remind me what that case us? I should out it in the draft.
>
> https://www.adafruit.com/products/2258
>
> You should get one to play with. You have to put the Pi in first, then
> install the HAT. When installing the Pi, I find it easiest to use a small
> screwdriver from
Hal Murray :
>
> fallenpega...@gmail.com said:
> > At the F2F this weekend, ESR brought up that you think we may be able to
> > excise the PLL code from NTPsec.
>
> > Can you expand on that, please?
>
> It's more complicated that a simple excise.
>
> My knowledge may be buggy. It's not clear
> On May 3, 2016, at 6:50 PM, Hal Murray wrote:
>
> The problem with the Pi was USB related. I don't see troubles when using the
> Ethernet, but WiFi hangs occasionally (days). All the USB WiFi gizmos from
> Adafruit use the same chip. My guess is that the WiFi chip does something
> strang
Hal Murray :
> The problem with the Pi was USB related. I don't see troubles when using the
> Ethernet, but WiFi hangs occasionally (days).
Right. I've heard similat scuttlebut.
Conveniently, the build doesn't require either USB or WiFi.
--
http://www.catb.org/~esr/";>Eric S.
>> There are a lot of small Pi-like ARM boards. How did you pick the Odroid
C2?
> I heard reports that it's HAT-compatible. That makes it low-hanging fruit.
Sounds like a good reason.
I think I saw some comments about the Pi being flaky with a list of better
boards. If I find it again I'll a
fallenpega...@gmail.com said:
> At the F2F this weekend, ESR brought up that you think we may be able to
> excise the PLL code from NTPsec.
> Can you expand on that, please?
It's more complicated that a simple excise.
My knowledge may be buggy. It's not clear that any of this makes Eric's job
Hal Murray :
> SiRF used to have most of the market but I think uBlox is getting in there
> now.
That's correct, and a good thing because the u-blox is way better than
even the SiRF-III, let alone the execrable IV. Really excellent
weak-signal performance.
Example:
http://www.amazon.com/Generic
Hal Murray :
>
> e...@thyrsus.com said:
> > Accordingly, I'll be extending the breadth of the HOWTO to cover more
> > hardware - not just two additional HATs but the Odroid C2 as well and
> > probably the BeagleBone Black later.
>
> Could you please say a bit more about that area?
>
> There are
In a few weeks I will have a crate of the Navisys units. They do PPS over
USB serial.
On Tue, May 3, 2016 at 2:30 PM Hal Murray wrote:
>
> g...@rellim.com said:
> > Please, no GPS-18s. The Garmin Binary protocol is a mess and the chip is
> > over 10 years old with a weak sensitivity, no GLONAS
g...@rellim.com said:
> Please, no GPS-18s. The Garmin Binary protocol is a mess and the chip is
> over 10 years old with a weak sensitivity, no GLONASS, etc. Many better GPS
> LVC solutions.
The GPS-18x is only 5 years old. 1/2 :) It speaks NMEA so you don't have to
mess with the binary st
Rules of engagement for the waf replay:
Do not edit the source, no matter how hairy or nasty it may be. Not even
the smallest change.
Do not change the source code directory layout
Do not try to make the waf you write "smart" or "elegant". Use brute force.
Do not spend any effort making it sim
Hello Hal,
At the F2F this weekend, ESR brought up that you think we may be able to
excise the PLL code from NTPsec.
Can you expand on that, please?
Thank you!
..m
___
devel mailing list
devel@ntpsec.org
http://lists.ntpsec.org/mailman/listinfo/devel
Hi!
As a reminder, the next IETF TICTOC WG meeting is this next Thursday.
I will likely attend this telecon meeting at the beginning, but will have
to drop out at 12:30pm EDT to run the recurring OpenSwitch Partners
Meeting. I trust in the good judgement of Daniel and Eric for our ongoing
engagem
Hal Murray :
>
> e...@thyrsus.com said:
> > The audio drivers are near the top of the list of things I'd like to remove.
> > I strongly suspect they're both obsolete and broken, and they're surrounded
> > ny a lot of poorly-documented cruft like tg.c that could stand to go.
>
> My vote would be
Yo Eric!
On Tue, 3 May 2016 08:41:14 -0400 (EDT)
e...@thyrsus.com (Eric S. Raymond) wrote:
> Thank you everyone who showed up at Penguicon for making it a very
> productive and pleasant experience. Hanging out with the team members
> and other friends of the project before the official meeting
Yo Hal!
On Tue, 03 May 2016 09:17:25 -0700
Hal Murray wrote:
> It would be good to be able to test PPS over USB. The no-soldering
> approach is to get one of the 601W. (I think that's the right
> number.) Gary may still have some or Mark may order a batch.
Yeah, I still have a few.
> For a
Yo Hal!
On Tue, 03 May 2016 09:32:24 -0700
Hal Murray wrote:
> I think IRIG is still widely used outside of NTP. I think Susan was
> in touch with some of those people.
IRIG is still big in the video production industry. But I'm not sure
which formats or interfaces are common.
But from what
cbwie...@gmail.com said:
> The GPS Hat should just work. The GPS Hat will also provide an RTC for both
> the ODroid and the RPi.
Is there really a RTC on a GPS HAT? Which one?
The battery is to keep the RTC equivalent inside the GPS chip going. It's
the difference between cold start and war
On Tue, May 3, 2016 at 12:39 PM, Hal Murray wrote:
> e...@thyrsus.com said:
> > Accordingly, I'll be extending the breadth of the HOWTO to cover more
> > hardware - not just two additional HATs but the Odroid C2 as well and
> > probably the BeagleBone Black later.
>
> Could you please say a bit m
e...@thyrsus.com said:
> Accordingly, I'll be extending the breadth of the HOWTO to cover more
> hardware - not just two additional HATs but the Odroid C2 as well and
> probably the BeagleBone Black later.
Could you please say a bit more about that area?
There are a lot of small Pi-like ARM boa
e...@thyrsus.com said:
> The audio drivers are near the top of the list of things I'd like to remove.
> I strongly suspect they're both obsolete and broken, and they're surrounded
> ny a lot of poorly-documented cruft like tg.c that could stand to go.
My vote would be to carry them along until w
v...@darkbeer.org said:
>> What's your current collection?
> I don't have any right now other than the various GPS chips and boards on
> the way to run off of GPIO connections.
You should probably get a couple of the USB "mice" or hockey puck style
units. They run $25-$50 each. Most speak NM
>
> I have RPi1, RPi2, RPi3, BBB, and O-Droid C2. I also have an old Chumby
> that I will try, but just for the challenge.
>
I have an O-Droid C1 sitting unused that I'd be willing to donate if there
is interest.
--
Gregory Boyce
___
devel mailing list
Amar Takhar :
> Before I start pushing some of the major changes to make the 'replay' branch
> happen I need a few questions answered:
>
> - Is it easier to edit the source for renamed defines to match current or
>should I add compat shims.
> - Will the source layout change almost immediat
Amar Takhar :
> I'm confused at the first commit for the replay branch. I was expecting it
> to
> be after the first conversion of the repository.
>
> Is there a reason that 69ddfd9 was used?
Can't say, I can't find that hash. What was the commit summary line?
And just to be sure, are we talk
On Tue, May 3, 2016 at 9:05 AM, Eric S. Raymond wrote:
>
> Accordingly, I'll be extending the breadth of the HOWTO to cover more
> hardware - not just two additional HATs but the Odroid C2 as well and
> probably the BeagleBone Black later.
> --
> http://www.catb.org/~esr/";>Eric
Before I start pushing some of the major changes to make the 'replay' branch
happen I need a few questions answered:
- Is it easier to edit the source for renamed defines to match current or
should I add compat shims.
- Will the source layout change almost immediately to match current or sh
On 2016-05-03 02:43 -0700, Hal Murray wrote:
> > Does anyone here have any reference clocks they're not using? I'm looking
> > for different clocks to test as many of the refclock drivers as possible.
>
> What's your current collection?
I don't have any right now other than the various GPS chip
Hal Murray :
> I tried one of the audio drivers a while ago but didn't get it to work. I
> didn't try very hard. I forget the details. It did work many years ago.
The audio drivers are near the top of the list of things I'd like to remove.
I strongly suspect they're both obsolete and broken, a
I'm back to working on the Raspberry Pi HOWTO (only its name will
probably change now, for reasons to be explained shortly).
This is now a fully official project activity, as Mark has a plan
to broadcast it yp a humdred hackerspaces and recruit the next
generation of time service experts from pepp
Thank you everyone who showed up at Penguicon for making it a very
productive and pleasant experience. Hanging out with the team members
and other friends of the project before the official meeting was as
productive as the meeting itself, and that meeting developed us a path
forward around some tr
Resent copying the list this time.
On 5/3/16, Hal Murray wrote:
>
>> A from-scratch proven and verified C implementation of "simple NTP
>> broadcast
>> client" will be written. Lead on that project will be Daniel.
>
> Could you say a bit more? How "simple"? What does "verified" mean?
For the
> A from-scratch proven and verified C implementation of "simple NTP broadcast
> client" will be written. Lead on that project will be Daniel.
Could you say a bit more? How "simple"? What does "verified" mean?
What are you expecting in the way of timekeeping accuracy and/or glitch
avoidance
[I'm scanning old mail looking for something else.]
v...@darkbeer.org said:
> Does anyone here have any reference clocks they're not using? I'm looking
> for different clocks to test as many of the refclock drivers as possible.
What's your current collection?
> I should be able to find some
45 matches
Mail list logo
