[Tinyos-help] Clock drift model fot TMote Sky???

[Urs Hunkeler]

Hi Luis,

I did some measurements some time ago. I just compared the clock-drift
of 5 or 10 motes over one day. The maximum difference I saw was about
0.5s in 24h. Apparently different versions of the Tmotes use different
crystals. They probably have similar characteristics. This message in
the mailinglist might help you further:
http://mail.millennium.berkeley.edu/pipermail/tinyos-help/2006-June/017502.html

Cheers,
Urs


Luis E. Palafox-Maestre schrieb:
> Hi,
> 
> I'm implementing a cluster-based network with TMotes that need to be
> synchronized, to do so I'm trying to do so with a fairly simple technique:
> sending a beacon every certain time period. However the beacon frequency
> depends on the clock drift of the TMotes. So, I was wondering if someone has
> some information about the expected clock drift on the TMote Sky platform.
> If so please let me know.
> 
> Thanks in advance.
> 
> Luis Palafox