Tom,
Thank you and nice to be back!
Was working major hours for a while.
Workin' for a living :)
Now, I must confess that this project is sort of a
milestone for me.
Those who hate kids (I know you are out there !)
can stop reading now :)
My daughter, who just turned six, has been very curious
Moin,
On Wed, 17 Oct 2012 11:42:06 -0700
"Tom Van Baak" wrote:
> > A new LEA6-T single piece cost IIRC 190EUR from the webshop.
> > A LEA5-T was IIRC half price.
> >
> > And a little caution: the LEA5 modules use considerably more power during
> > aquisition than the LEA4 did and the LEA6. IIRC
> Question: What GPS timing module should I go with? No more Motorola
> Oncore so what's best right now? Who sell modules? What are the price
> ranges?
>
> Your comments are most welcome.
>
> -George, N2FGX
Hi George,
Welcome back to the list; you've been quiet for a long time. This sounds
On Tue, Oct 16, 2012 at 7:03 PM, wrote:
> The miniITX mobos are quite impressive.
> There is no argument there.
>
> However, My simple idea was this:
>
> Since I want to keep time at 3 separate locations
> and wanted stratum 1 NTP, I didn't want overkill.
What is your accuracy requirement?Yo
On Tue, 16 Oct 2012 15:06:19 -0600
x...@darksmile.net wrote:
> Question: What GPS timing module should I go with? No more Motorola
> Oncore so what's best right now? Who sell modules? What are the price
> ranges?
I would go for the LEA modules. For once because you get pretty complete
documen
Hello everyone,
I started a new project for myself where I would use the RasperryPi Linux
board as a NTP server.
[]
Question: What GPS timing module should I go with? No more Motorola Oncore
so what's best right now? Who sell modules? What are the price ranges?
Your comments are most welcome
By the way, you need not use a USB serial adapter. Several folks are doing PPS
on the gpio pins.
Take a look here
https://github.com/davidk/adafruit-raspberrypi-linux-pps
And here
http://www.frambozenbier.org/index.php/raspi-community-news/4439-george-lu-on-ntp-pps
On Oct 16, 2012, at 22:03
Err... I meant packs of cigarettes
NOT cartons :)
Quoting x...@darksmile.net:
The miniITX mobos are quite impressive.
There is no argument there.
However, My simple idea was this:
Since I want to keep time at 3 separate locations
and wanted stratum 1 NTP, I didn't want overkill.
Actually my
The miniITX mobos are quite impressive.
There is no argument there.
However, My simple idea was this:
Since I want to keep time at 3 separate locations
and wanted stratum 1 NTP, I didn't want overkill.
Actually my reason for 3 different locations is simple:
Internet is flakey some places and so
> Question: What GPS timing module should I go with? No more Motorola Oncore
> so what's best right now? Who sell modules? What are the price ranges?
One option would be just a DE-9 connector with power on pin ??? (I forget).
You may need inverters and/or level shifters on Rx and Tx.
That wou
On Tue, Oct 16, 2012 at 4:37 PM, Hal Murray wrote:
>
>> One does NOT need a dedicated server for NTP. NTP can run on a linux system
>> that is also a web and mail server or on e linux desktop system that you
>> use for web surfing and web browse ring, just as long as the box stays
>> running and
Coincidentally, I just ordered a R-Pi yesterday. I have other
potential uses for it, not NTP. If you are not in a hurry, it is
possible to find the Soekris boards on ebay for a decent price. I got
one last year, in a case, for $50.
Joe Gray
W5JG
___
tim
> One does NOT need a dedicated server for NTP. NTP can run on a linux system
> that is also a web and mail server or on e linux desktop system that you
> use for web surfing and web browse ring, just as long as the box stays
> running and you don't turn it off.
It's been discussed before, but
On Tue, Oct 16, 2012 at 3:26 PM, wrote:
> Michael,
>
> Thank you for your most valuable information.
> This is why time-nuts is so amazing!
>
> My goal is actually two-fold.
>
> First, I would like to have a NTP server that I can easily
> hook up (well, as easily as possible) without
> dedicadtin
On 10/16/2012 06:28 PM, sh...@impsec.net wrote:
I'm a junior time-nut at best but it looks to me like jitter from the
USB Ethernet is acceptably low, based on ntpq -p anyway:
It's a minor problem at worst. There are many worse conflating factors
and NTP adjusts very slowly anyway to deal with
Annoyance with small Linux boards:
My single biggest annoyance is that
all the I/O connectors are coming out from
all 4 directions.
What I mean is this:
It would be nice to have ethernet+LEDs+USB+VGA(HDMI)
come out from one side, and Power/I/O/RS232
from the opposite side.
This way if I make a
Michael Tharp wrote
[RE: raspberry pi ntp server]
It's not a terrible idea, but the RPI has a USB ethernet transceiver so
in addition to the latency/jitter of the ethernet it also has the
latency/jitter of the USB.
I've been playing with a pair of Raspberry Pi ntp servers, one with a
$15 S
--
Message: 5
Date: Tue, 16 Oct 2012 15:06:19 -0600
From: x...@darksmile.net
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] RasberryPi, timing and GPS receivers
Message-ID: <20121016150619.16306sbpxvjy8...@darksmile.net>
Content-Type: text/plain;
Michael,
Thank you for your most valuable information.
This is why time-nuts is so amazing!
My goal is actually two-fold.
First, I would like to have a NTP server that I can easily
hook up (well, as easily as possible) without
dedicating a Linux server each time.
My personal use would require
On 10/16/2012 05:06 PM, x...@darksmile.net wrote:
My goal is to design a custom board for the Pi and mount a GPS receiver
on it. With this combination, I should be able to configure NTP for the
Pi and thus have the Pi act as a Stratum 1 NTP server.
The new RasberryPI has 512MB memory so it shoul
/
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of x...@darksmile.net
Sent: Tuesday, October 16, 2012 4:06 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] RasberryPi, timing and GPS receivers
Hello everyone
uBlox LEA-5T, LEA6-T? SkyTraq Venus5?
On Tue, Oct 16, 2012 at 11:06 PM, wrote:
> Hello everyone,
>
> I started a new project for myself where I would use the RasperryPi Linux
> board
> as a NTP server.
>
> My goal is to design a custom board for the Pi and mount a GPS receiver on
> it. With this
Hello everyone,
I started a new project for myself where I would use the RasperryPi
Linux board
as a NTP server.
My goal is to design a custom board for the Pi and mount a GPS
receiver on it. With this combination, I should be able to configure
NTP for the Pi and thus have the Pi act as a
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