OESF Portables Forum

Everything Else => Sharp Zaurus => Model Specific Forums => Distros, Development, and Model Specific Forums => Archived Forums => C1000/3x00 Hardware => Topic started by: dproldan on June 13, 2006, 02:31:28 pm

Title: Current Consumption
Post by: dproldan on June 13, 2006, 02:31:28 pm

Hi,  I made some current measurements with an ampmeter trying to find the most efficient light setting.
  These are made with a SL-C1000 running cacko 1.23. from the battery with the wiring shown it the attached picture.

 level 1: 200 mA
 level 2: 205 mA
 level 3: 215 mA
 level 4: 230 mA
 level 5: 270 mA
 level 6: 315 mA

  While boting cacko, it consumes around 320 mA.

  These are average measurements during one minute without doing anything with the zaurus.

  I decided to leave the setting at level 3 for battery use,  as the current diference isn't too big.

  I'll try to make some measurements with the powernowd utility that Albertr has released.

Title: Current Consumption
Post by: bam on June 13, 2006, 04:31:43 pm

cool, cant wait to see if it really helps...

Title: Current Consumption
Post by: DaemonsGR on June 13, 2006, 05:53:49 pm

You are great!!! PLz can you test CF card also!! Bluetooth?Wifi? SD??

Thnx alot
Tasos

Title: Current Consumption
Post by: ldrolez on June 20, 2006, 12:25:42 pm

Quote

level 1: 200 mA

Nice that confirms some other measurements I'm currently running ! (Not measuring consumption but battery life so, at most I can run only one test in a day...)
http://ldrolez.free.fr/software/zaurus/ (http://ldrolez.free.fr/software/zaurus/) (at the bottom)
The next measurement i'll try, will be playing mp3 files with kino and lcd off, and cpu at 143 Mhz.
Cheers,
  Ludovic.

Title: Current Consumption
Post by: Mjolinor on June 20, 2006, 01:14:17 pm

https://www.oesf.org/forums/index.php?showtopic=17570&hl= (https://www.oesf.org/forums/index.php?showtopic=17570&hl=)

Title: Current Consumption
Post by: albertr on June 20, 2006, 02:07:17 pm

dproldan,

If you can post your findings with powernowd running, that would be great! What /etc/powernowd.conf file are you using?
-albertr

Title: Current Consumption
Post by: ldrolez on June 22, 2006, 03:25:34 pm

Quote

The next measurement i'll try, will be playing mp3 files with kino and lcd off, and cpu at 143 Mhz.

Awesome ! 14 hours and still playing MP3 (@ 143Mhz) ! Didn't know the Zaurus was a so good mp3 player. I think it will last 20 hours. After that, I'll try powernowd...

Cheers,

  Ludovic.

Title: Current Consumption
Post by: bluedevils on June 22, 2006, 04:48:48 pm

actually that makes sense.  As you and others have proven, the biggest normal power drain is the display and the zaurus battery is heavier (and more powerful?) than many mp3 players.  Turn off the display and the drain becomes a trickle.

Title: Current Consumption
Post by: ldrolez on June 23, 2006, 02:48:22 am

Quote

Awesome ! 14 hours and still playing MP3 (@ 143Mhz) ! Didn't know the Zaurus was a so good mp3 player. I think it will last 20 hours. After that, I'll try powernowd...

Test finished : 24 hours of MP3 playback ! Better than any IPOD  
My latest benchs: http://ldrolez.free.fr/software/zaurus/ (http://ldrolez.free.fr/software/zaurus/)

I think that it could be better since reading Intel's 28000205.pdf we can find recomended voltages (I used 143Mhz 1.25v):

@104/104/104/104 Mhz= 0.9 V
@156/104/104/104 Mhz= 1.0 V
@208/208/208/104 Mhz= 1.18V
@312/208 = 1.25V
@312/104 = 1.1V
@416/208 = 1.35V
@520/208 = 1.45V
@624/208 = 1.55V

Can you fix the 'Combined battery plugin' Mikhail ?

Cheers,

  Ludo.

Title: Current Consumption
Post by: Da_Blitz on June 24, 2006, 06:57:37 am

Voltages can play a huge role in power consumtion, i remeber back in my old Dell x30 days where i would leave the processor at 1.6V or whatever was the highest by accident