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Posts: 429 | Thanked: 217 times | Joined on Apr 2010 @ Dubai
#1
Optimum Processor Temperature

Until now there were no threads about at what temperature should you realize that the N900 is at a critical point.

Mainly its due to that the n900 doesn't have a sensor for the processor itself but the battery.

So by using that i did some research and found that the processor itself works in a range of -40 C to 105 C / 0 C to 90 C

you can see for yourself by clicking this Link

here is a link to a post where it says that the battery shouldnt reach above 60 C Link

and here is a test playing a video at room temp and at 0 C outside while spraying the phone with water Link

and there were many reports saying that the temperature of the battery increase while charging, which is fine of course as it must happen with all types of batteries

the Nokia default kernel uses somewhat high voltages that increases the temperature

What is the critical temperature?
well in my opinion you shouldn't let your phone go above 50 C to 55 C, just to be on the safe side.

and if it exceeds then the best way is to shut it off, remove the battery and wait a few minutes for it to cool off.

What is the optimum temperature?

if the phone works a few degrees above room temperature then thats fine but if there is a drastic difference then you should be worried.

How to get a reading of the temperature??

Best way to get 'let's say ' accurate reading it to have installed the power-kernel

Then open the terminal and run the following codes
Code:
sudo gainroot
modprobe bq27x00_battery
echo bq27x00_battery >> /etc/modules
The above must be done only once
Now to get a reading just run this command

Code:
echo `cat /sys/class/power_supply/bq27200-0/temp`°C


i hope my information was helpful.
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Last edited by bakuur; 2010-10-09 at 16:16.
 

The Following 6 Users Say Thank You to bakuur For This Useful Post:
RenaldoTT's Avatar
Posts: 511 | Thanked: 128 times | Joined on Aug 2010 @ Trinidad and Tobago
#2
Do you know how to check battery temp?
 
MohammadAG's Avatar
Posts: 2,473 | Thanked: 12,265 times | Joined on Oct 2009 @ Jerusalem, PS/IL
#3
There are no sensors on the OMAP3 CPU, there's one near the battery but TI say that it can be way off, so you shouldn't use it (sometimes it shows -40C)
 
RenaldoTT's Avatar
Posts: 511 | Thanked: 128 times | Joined on Aug 2010 @ Trinidad and Tobago
#4
i still wana see it so yea where is it?
 
MohammadAG's Avatar
Posts: 2,473 | Thanked: 12,265 times | Joined on Oct 2009 @ Jerusalem, PS/IL
#5
It's in /sys
cd /sys && find -name temp* to get the filename, can't remember it tbh
Then just cat it
 
RenaldoTT's Avatar
Posts: 511 | Thanked: 128 times | Joined on Aug 2010 @ Trinidad and Tobago
#6
Err hmm I'll see what I can find
 
Posts: 429 | Thanked: 217 times | Joined on Apr 2010 @ Dubai
#7
Originally Posted by RenaldoTT View Post
Err hmm I'll see what I can find
Kk guys updated the post you will find how to find the temperature of the n900 up there
Enjoy
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N900 @850Mhz
My N900 changed my life and made it ALOT easier!
 
RenaldoTT's Avatar
Posts: 511 | Thanked: 128 times | Joined on Aug 2010 @ Trinidad and Tobago
#8
this is safe right? once done correctly it don't mess with anything right?
 
Posts: 429 | Thanked: 217 times | Joined on Apr 2010 @ Dubai
#9
yes yes its safe
just follow those exact steps
first set of codes is done once
secound is to read the temperature
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N900 @850Mhz
My N900 changed my life and made it ALOT easier!
 
atilla's Avatar
Posts: 1,210 | Thanked: 597 times | Joined on Apr 2010 @ hamburg,germany
#10
i have the battery temp showed in conky.there is somewhere a script for that.check the beutify conky thread.
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