The ball bearing fan upgrade is the best idea. Bater idea is to put
in a temperature controlled fan so it will spin slow or stop most of
the time.
I don't see the need to run each server on it's own hardware. Put the
cashing DNS server on the same box as the NTP server. Or if you do
have two
I think beagle bone black is the answer to this question (because rPi
has a USB-network interface that´s problematic) but i´ll let others
that know more than me about this specific subject follow on
Daniel
On 06/04/2015 19:29, Frank Hughes via time-nuts wrote:
Hi,Years ago this forum
On Mon, Apr 6, 2015 at 5:29 PM, Frank Hughes via time-nuts
time-nuts@febo.com wrote:
Looking for a platform not needing a fan. While the ATOM and SSD seem to
be OK w/o direct airflow, the Mini ITX Power Supply fan is needed.
After three years, the stupid sleeve bearings are beginning to
On Mon, 6 Apr 2015 22:29:23 + (UTC)
Frank Hughes via time-nuts time-nuts@febo.com wrote:
Looking for a platform not needing a fan. While the ATOM and SSD seem to be
OK w/o direct airflow, the Mini ITX Power Supply fan is needed.
That depends highly on how much knowledge in linux and
On Mon, 06 Apr 2015 23:02:01 +0200
Magnus Danielson mag...@rubidium.dyndns.org wrote:
You want to keep your chip-rate up to make the integer ambiguity of the
carrier phase simple. The carrier frequency divided by chipping rate
ratio indicate how difficult problem it is to solve (GPS L1 C/A
Tangetially relevant; I made a patch for TimeLab to use the gap-free
frequency measurement-mode for the 53230A, if anyone is interested.
On Fri, Apr 3, 2015 at 4:34 PM, Tom Van Baak t...@leapsecond.com wrote:
There is probably a good explanation for the ADEV-level in standard
(pi-counting?)
albertson.ch...@gmail.com said:
In terms of performance, ARM based credit card sized computers do well if
you can get the PPS to the general purpose I/O pin that interrupts on an
edge. the Pi can't do that the BeagleBone Black can and it sell for $45.
What/why can't the Pi do? I have one
Internally the rPI is a ver awkward beast: the CPU is connected to a
GPU, and the GPU is connected to the GPIOs... so lots of jitter and latency.
It was designed to be a video decoder... the CPU is there for testing
and housekeeping. It works, surelly, but it´s not designed to have low
On Mon, Apr 6, 2015 at 6:29 PM, Frank Hughes via time-nuts
time-nuts@febo.com wrote:
Or just put a ball-bearing fan in
Sites like lilliputing follow the low power/embedded market. I'd suggest
starting there.
All of my low power systems use power bricks. This includes mini-itx
boards.
I've
Hi,
On 04/07/2015 02:08 PM, Attila Kinali wrote:
On Mon, 06 Apr 2015 23:02:01 +0200
Magnus Danielson mag...@rubidium.dyndns.org wrote:
You want to keep your chip-rate up to make the integer ambiguity of the
carrier phase simple. The carrier frequency divided by chipping rate
ratio indicate
I think beagle bone black is the answer to this question (because rPi
has a USB-network interface that´s problematic) but i´ll let others
that know more than me about this specific subject follow on
Daniel
==
Problematic if you are after
Every timelab needs a time interval counter. I'd say look for a HP 5334B
with option 010. I've picked up two from ebay for about USD100 each, and
that comes with a decent 18011. After that, watch your cash disappear as
you discover a need for faster/better/more accurate instruments, not to
mention
Ole Petter Ronningen:
Tangetially relevant; I made a patch for TimeLab to use the gap-free
frequency measurement-mode for the 53230A, if anyone is interested.
Thanks for this great support!
Ulli
___
time-nuts mailing list -- time-nuts@febo.com
To
On Tue, 7 Apr 2015 17:39:01 +0100
David J Taylor david-tay...@blueyonder.co.uk wrote:
Problematic if you are after microsecond-level accuracy, perhaps, but so
would the BeagleBone be. If your needs are more in the 100 microsecond
range, either would be fine with a reasonably wide PPS pulse.
Looking for a platform not needing a fan. While the ATOM and SSD seem to be
OK w/o direct airflow, the Mini ITX Power Supply fan is needed.
If you are happy with Raspberry Pi or BeagleBone Black, they are the low cost
low power way to go. They run Linux. They don't have a real disk. If
Hi!
Take a look at
https://www.febo.com/pipermail/time-nuts/2014-December/089217.html and
https://www.febo.com/pipermail/time-nuts/2014-December/089681.html. There
you can see sub-microsecond accuracy.
Edésio
On Tue, Apr 07, 2015 at 09:52:57PM +0200, Attila Kinali wrote:
On Tue, 7 Apr 2015
On 4/7/15 11:33 AM, Magnus Danielson wrote:
Hi,
O
One might look at the available frequencies and see if there is a
telemetry band available which allows wider bandwidth. For the
application, I don't see that very much transmitted power is needed.
If the OP is a licensed amateur radio
Is the new RPi2 any different in that regard?
On April 7, 2015 8:17:12 AM CDT, Daniel Mendes dmend...@gmail.com wrote:
Internally the rPI is a ver awkward beast: the CPU is connected to a
GPU, and the GPU is connected to the GPIOs... so lots of jitter and
latency.
It was designed to be a video
Hi
Now you need to sort out the B, the A+ and the B+ in the Raspberry world. There
may be more that I have not yet noticed. As far as I can tell, they all are
pretty limited
once you get past the tight video integration on the B and B+.
Bob
On Apr 7, 2015, at 12:41 PM, Didier Juges
On 07/04/2015 17:58, Hal Murray wrote:
If you are happy with Raspberry Pi or BeagleBone Black, they are the
low cost low power way to go. They run Linux. They don't have a real
disk. If you do a lot of disk activity, you might wear out the SD
card frequently enough to be annoying. That
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