[Tinyos Core WG] Meeting: 3/14

[Joe Polastre]

FYI, in LPM4 ("off" mode with TOSBoot), the current is 5.4uA @ 3.15V.

-Joe

On 3/20/07, Joe Polastre <joe at polastre.com> wrote:
> The problem lies with TinyOS 2.x
>
> With TinyOS 1.x, specifically the CountSleep application in
> tinyos-1.x/apps/CountRadio, compiled with 'make tmote' yields:
>
> 8.84uA
> 9.01uA
> 8.94uA
>
> on three randomly chosen RoHS motes without sensors at 3.15V supply
> (two brand-new batteries).  The current consumption is about 1.5uA
> lower at 2.7V supply.
>
> You should check your initialization routine for TinyOS 2.x, sounds
> like hardware pin configuration problem to me.
>
> -Joe
>
> On 3/20/07, Philip Levis <pal at cs.stanford.edu> wrote:
> > On Mar 20, 2007, at 8:05 AM, Vlado Handziski wrote:
> >
> > > As promised, here is the average Null app current draw at 3.0V for
> > > 3 tmote sky nodes randomly selected from our latest purchase. They
> > > all had RoHS sticker on the transport bags:
> > >
> > > 36.96 uA
> > > 36.73 uA
> > > 36.87 uA
> > >
> > > the circuit board has the designation: H014-4787/0640
> > >
> >
> > Did these have sensors populated? The ones I measured didn't.
> >
> > This puts the Telos minimum current over the micaz, even given its
> > wakeup latency and current draw for low-rate timers...
> >
> > Phil
> >
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> >
>