Well, you see...in a word. No. At least I don't know of any. But more to the point, it's a meaningless question because the current draw, and thus "inner resistance", varies with the functions being performed. E.g., if the radio is transmitting, more current is being drawn (and, according to help-list wisdom, receiving uses even more power....which makes no sense to me, but not much does anymore either).
If you have current measurements for the various states you can calculate the effective resistances and then guess how long the mote is in each state to arrive at a total power use. MS ma. pratama wrote: > yes..thats exactly what i do right now..using a small resistor and > measure the battery each hour..but if i could know the inner resistance > it should be much easier to measure the current..are there any > repositories that revealed the micaz resistance?? > > --- On *Sat, 6/6/09, Michael Schippling /<[email protected]>/* wrote: > > > From: Michael Schippling <[email protected]> > Subject: Re: [Tinyos-help] Ask inner resistance of Micaz motes > To: "ma. pratama" <[email protected]> > Cc: [email protected] > Date: Saturday, June 6, 2009, 9:33 AM > > That's a bit of a problem as the current draw changes with operation. > Folks have used a small resistor in series with the battery to measure > the current. Search this list for more info. > > MS > > ma. pratama wrote: > > Hi all,,, > > > > I want to measure the current after usage in the micaz motes. I > will using moteview to monitor the voltage in the micaz motes, so i > only need the inner resistance inside the micaz motes to determine > the current by simple formula : V = I . R. > > > > Do anyone know how much the inner resistance of the micaz motes?? > thanks.. > > > > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > Tinyos-help mailing list > > [email protected] > </mc/[email protected]> > > > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
