Thanks , That sounds pretty neat. I will try that .
Somnath On Fri, May 30, 2008 at 1:48 PM, Saikat Ray <[EMAIL PROTECTED]> wrote: > Have you disconnected the mote from the battery? The correct arrangement is > as follows: > > Let the > battery (power supply) terminals be "A" and "B" > resistor terminals be "C" and "D" > mote terminals be "E" and "F". > > Usually the battery and the mote would be connected: i.e., "A" is connected > to "E" and "B" is connected to "F". > > Break the connection. In mica motes, the battery (box) is soldered on the > PCB. You need to remove the solders and take the battery box out. > Alternately (if you are not in a destructive mood), do not put any batteries > in the battery box that is connected to mica mote. Instead, use a separate > battery box and connect it to the mote's power supply pins using wires. > > Now attach "A" to "C", "D" to "E" and "F" to "B". > > Now place turn on the mote and connect your multimeter probes (in voltage > reading mode) to points "C" and "D". > > Of course the description above can be paraphrased as "put the resistor in > series". > > On Thu, May 29, 2008 at 9:27 PM, Shomnat Mitra <[EMAIL PROTECTED]> wrote: > >> Hello , >> >> I have gone through several help archives to find a way to measure the >> current draw of the motes. >> >> All suggest using a 1 ohm resistor in series with the + ve terminal of >> the battery and the other end of the resistor attached to the PCB, >> and measuring the voltage across this resistor. >> >> The readings are 1.5V which is the battery voltage. >> I have tried several positions on the mote to attach the resistor, but >> none show any change. >> >> The reading also doesn't show any change when I use HPLPowerManagement in >> my programs. >> >> Is it because i am using a Multimeter ? >> >> Can anybody suggest the exact way to do this ? >> >> Thanks in advance , >> Somnath >> >> _______________________________________________ >> Tinyos-help mailing list >> [email protected] >> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >> > > > > -- > Dr. Saikat Ray > Assistant Professor > Department of Electrical Engineering and Computer Engineering > University of Bridgeport > Cell: 215-279-1032 > Office: 203-576-4165 > Web: http://raysaikat.googlepages.com
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