Usually a multimeter won't give you good accuracy because 1) many won't
get down to uA resolution, and 2) the mote's power consumption moves all over
the place when running an application, so the multimeter doesn't have time to
settle on an accurate value.
If you
have access to a DAQ, monitor the voltage at the two ends of a resistor
that is placed in series with the battery. Then use I=V/R
to give you the current entering the mote.
I've
been using a 1-ohm precision resistor, which seems to work well for the target
resolution. This resistor has been soldered across both sides of a small
copper plated FR-4 "popsicle stick", so performing measurements simply involves
inserting this stick between one of the battery ends and the battery connector
on the mote.
-David
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ¹ÚÆDZÙ
Sent: Tuesday, September 05, 2006 3:14 AM
To: [email protected]
Subject: [Tinyos-help] how to measure power consumption in tmote skyHi.i'm working with tmote sky and i want to measure the power that the
board consumes,Do you have some tools ? or Could you give advices to measure power consumption?thanks a lot
_______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
