Re: GPS Unit for Timekeeping on Linux?

kashe_at_sonic.net
Date: 11/16/04 

Date: Tue, 16 Nov 2004 10:40:30 GMT

On Mon, 15 Nov 2004 11:08:33 GMT, "W. Watson"
<wolf_tracks@invalid.inv> wrote:

>I have a meteor application that operates a camera from sundown to sunrise, and the
>more accurate the times the better. Right now the drift is in the order of several
>minutes per month. Synching once a day might do the trick, but I'd like to see it
>automated, so that I wouldn't have to dial up the internet. If the application were
>near my most frequently used computer, the one in my house, I'd probably be inclined
>to manually update the time by the network every day; however, it is a building 100
>feet away and going out there every day is not something I think about much.
>
>I know there are manual techniques in Linux to refine the times, but I don't
>presently have a lot of confidence in them. In particular, it appears if Linux goes
>down unexpectedly, one gets to start all over with the refinement. My system seems to
>crash about once every two weeks. I could be wrong about having to start almost from
>scratch on the refinement. It's something I should explore.

        Depending on what OS you're running on the house system, you
could get an NTP app which is capable of acting as both client and
server. AboutTime is such an app for Windows. At that point, you could
set up the remote Linux system with a wireless link to the house
system. Set an appropriate interval for the house system to get the
time from the net (as a client), then let it act as a server for the
remote system's NTP app.

Relevant Pages

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