-Original Message-
From: paul swed
Sent: Tuesday, November 20, 2012 9:34 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] eBay Ublox
any luck on the ntp server?
==
If it's me you are asking, yes, Paul, here's
- From: paul swed
Sent: Tuesday, November 20, 2012 9:34 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] eBay Ublox
any luck on the ntp server?
==
If it's me you are asking, yes, Paul, here's the server
-Original Message-
From: Bill Dailey
Very nice write up. I went down a similar road with my fury and Ubuntu...
And then with FreeBSD on a soekris box. Have you tried refclock drivers
instead of gpsd? I use gpsd on Ubuntu but decided to use refclock route
instead for FreeBSD. I
Yep. You are right. May help only in the serial data... And irrelevant.
Doc
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On 11/21/2012 06:24 AM, David J Taylor wrote:
I only use gpsd on the Linux system, and then only because it was the
first thing I discovered when searching with Google. As the precise
timing is from the PPS signal fed to the GPIO pin, with a GPIO interrupt
handler, I am forced to use that. I
-Original Message-
From: Michael Tharp
[]
What you have is probably better than the typical RS-232 DCD line.
Ultimately it's doing the same thing with mostly the same code --
triggering an interrupt when the line changes, and timestamping that in
the kernel to keep the slippage between
On 21 Nov, 2012, at 10:34 , Michael Tharp g...@partiallystapled.com wrote:
With respect to interrupt latency, the PPS driver is the best you're going to
get without a custom add-in card that provides input capture (timestamping).
I considered going that route but making PCI or PCI-e cards
any luck on the ntp server?
On Sat, Nov 10, 2012 at 1:31 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
oh thats my kind of basement wall wart. Place it on the wall and forget it.
I have nas drives that way. They spin down and power consumption is I want
to say 5-8 watts been a long
Thanks to the folk here for pointing out the ublox receivers. I managed to
get one off eBay for ~US $30 with antenna on a board designed for hobbyists
with 3.3V serial and PPS outputs (I needed to add one wire for that) which
feed directly into a Raspberry Pi. It's still to be completed, but
most interested in you progress.
What will be the total power consumption of the pi and gps rcvr?
On Fri, Nov 9, 2012 at 3:17 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
Thanks to the folk here for pointing out the ublox receivers. I managed
to get one off eBay for ~US $30 with
-Original Message-
From: paul swed
most interested in you progress.
What will be the total power consumption of the pi and gps rcvr?
===
I've not measured the total, Paul, but the Raspberry Pi is about 700 mA and
the GPS receiver less than 100 mA, so
oh thats my kind of basement wall wart. Place it on the wall and forget it.
I have nas drives that way. They spin down and power consumption is I want
to say 5-8 watts been a long time. May be lower. You access them they spin
up and get your data stay up for a while and back down.
A quite basement
oh thats my kind of basement wall wart. Place it on the wall and forget it.
I have nas drives that way. They spin down and power consumption is I want
to say 5-8 watts been a long time. May be lower. You access them they spin
up and get your data stay up for a while and back down.
A quite
message-
From: Azelio Boriani azelio.bori...@screen.it
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Mon, Jan 2, 2012 09:42:54 GMT+00:00
Subject: Re: [time-nuts] eBay Ublox
I have experience with the LEA5-T in timing mode and, and of course, it
works
Sent: Tuesday, January 03, 2012 5:13 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] eBay Ublox
Yes, no TRAIM on the uBlox but I haven't seen the TRAIM alarm kicking in on
the Motorola/iLotus M12M so I think that for our experiments the uBlox is
fine. Even
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Azelio Boriani
Sent: Tuesday, January 03, 2012 5:13 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] eBay Ublox
Yes, no TRAIM on the uBlox but I
Yes, and the new uBlox timing GPS have a software jamming sensor and
indicator which the Motorola/iLotus products do not have, and they are much
easier to get to work at a users' site than the Motorola parts, and much more
robust against jamming than the Motorola timing GPS. We have done
On 12/31/2011 07:41 PM, lstosk...@cox.net wrote:
UBLOX TIM-CJ module TIM-ST GPS engine Jupiter footprint
After finding these, and buying a couple, I found item 220915477952
U-Blox RCB-LJ receiver boards, cheaper ($9) and (I think) newer.
If I have the spec sheets figured out, the TIM-CJ
I have experience with the LEA5-T in timing mode and, and of course, it
works as expected. You can set not only how many samples to take but also
the variance to achieve before starting the position-hold/timing mode.
On Sun, Jan 1, 2012 at 10:44 PM, Bob Camp li...@rtty.us wrote:
Hi
I haven't
-Original message-
From: Azelio Boriani azelio.bori...@screen.it
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Mon, Jan 2, 2012 09:42:54 GMT+00:00
Subject: Re: [time-nuts] eBay Ublox
I have experience with the LEA5-T in timing mode and, and of course
Hi
I haven't used that particular unit. I have played with similar units. That's
pretty old stuff, and does not appear to have timing software in it. I suspect
you would do *much* better (both performance and price wise) with something
newer.
Bob
On Dec 31, 2011, at 7:41 PM,
Thanks for comment. At that price figured he had a bunch or they lacked in
utility. Did buy one to play with the PPS. Thanks, N0UU
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UBLOX TIM-CJ module TIM-ST GPS engine Jupiter footprint
anyone have any experience with this for timing application?
N0UU
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