[Tinyos-devel] more bugging about current consumption on MicaZ in tinyos-2.x

Eric Weddington eweddington at cso.atmel.com
Tue Jul 18 07:32:28 PDT 2006


Hi Joe,

Have you tried newer ATmega's? (Perhaps an ATmega1281?) And what kind of 
numbers did you find there?

Thanks
Eric Weddington

Joe Polastre wrote:
> The ATMega128L used on the MicaZ has a very wide sleep current.  Some
> customers have reported as low as 5uA sleep current while others have
> reported as high as 50-500uA sleep current.  The processor uses a very
> archaic design relative to the new ATMega's and the superior TI MSP430
> processors.
> 
> -Joe
> 
> On 7/17/06, Razvan Musaloiu-E. <razvanm at cs.jhu.edu> wrote:
> 
>> Hi!
>>
>> On Mon, 17 Jul 2006, Philip Levis wrote:
>>
>> > On Mon, 2006-07-17 at 15:48, Razvan Musaloiu-E. wrote:
>> > > Hi!
>> >
>> > >
>> > > I'll try to find a better one and check again. My problem is the same
>> > > multimeter shows very low values for a Telos (7.1uA for Null) so 
>> that's
>> > > why I haven't blame it so far.
>> > >
>> > > Once again, thank you very much!
>> >
>> > Hrm, that is weird.
>> >
>> > One thought: do you have any sensors attached to the mote? It might be
>> > that it's leaking current there. I did not have any sensors attached.
>>
>> Nope, no sensors. Just a bare MicaZ.
>>
>> -- 
>> Razvan ME


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