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dvijetrecine is offline dvijetrecine
2011-09-17 , 15:32
Posts: 17 | Thanked: 3 times | Joined on Sep 2011 @ croatia
#131
ok, take it easy, like i said i don't know a lot about electronics, just basic stuff, and that is why i ask so much questions (maybe sometimes a little dumb questions) and i get always the answer so that make me more interested to do something on my own. you guys give me a extra dose of courage do continue

edit: ok, i used watch i2cget -y 2 0x6b 0x00 and it shows 0x00 as output with charger, and it seems to me that you're right that wires is not ok, or two low voltage :S, at least i have usb connection if i brick my n900
edit2: now i changed wires in phone from aluminum to copper ones and now it shows 0x80 as output, and when i disconnect charger then it is showing 0x00 like before with charger
Last edited by dvijetrecine; 2011-09-18 at 09:46.
 
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Estel is offline Estel
2011-09-17 , 22:24
Posts: 5,028 | Thanked: 8,613 times | Joined on Mar 2011
#132
Curious question - please disconnect charger and leave microUSB plugged in. I wonder if GUI will kindly notice no charging activity at all.

Also, I would also check with charge21.sh, as joerg_rw suggested. You can find it here (shadowjk's page):
http://enivax.net/jk/n900/
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dvijetrecine is offline dvijetrecine
2011-09-18 , 13:55
Posts: 17 | Thanked: 3 times | Joined on Sep 2011 @ croatia
#133
when i connected n900 to pc and entered in xterm watch i2cget -y 2 0x6b 0x00 it shows 0x00 but then message pop up that voltageis to high and i need to connect original nokia charger. can this be reason of not charging, and is there any way to reduce voltage with resistor or something else?
 
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joerg_rw is offline joerg_rw
2011-09-18 , 15:07
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#134
Yes, this is a plausible story why it doesn't charge.
I'm pretty sure your wiring is thoroughly messed up (or your PC's USB port completely broken. Or you already managed to kill the charger chip by touching the testpads with an unearthed soldering iron).
Nothing to be done about that with a resistor or anything. I strongly suggest you check resistance from your "GND" wire soldered to testpad to a good ground (for this particular purpose you can also use minus pole of battery as "true GND" while for charging it is _not_), also doublecheck which pad you actually used for GND. To me that sounds like maybe you used some signal pad rather than a GND pad.

/j
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Last edited by joerg_rw; 2011-09-18 at 15:34.
 

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dvijetrecine is offline dvijetrecine
2011-09-18 , 16:37
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#135
i'm 100% sure that i connected GND on pinout like on the picture from first post, so or it is their mistake, or i don't know.
how much ohms multimeter should show?
 
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joerg_rw is offline joerg_rw
2011-09-18 , 16:48
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#136
Originally Posted by dvijetrecine View Post
i'm 100% sure that i connected GND on pinout like on the picture from first post, so or it is their mistake, or i don't know.
how much ohms multimeter should show?
between GND and "GND"? obviously next to 0.0 Ohm, maybe 0.5
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dvijetrecine is offline dvijetrecine
2011-09-18 , 17:22
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#137
Originally Posted by joerg_rw View Post
between GND and "GND"? obviously next to 0.0 Ohm, maybe 0.5
and so it is, 0.0 ohm straight
 

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Estel is offline Estel
2011-09-18 , 21:57
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#138
Can You check voltage provided by Your charger (via multimeter)?
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dvijetrecine is offline dvijetrecine
2011-09-19 , 08:00
Posts: 17 | Thanked: 3 times | Joined on Sep 2011 @ croatia
#139
it is about 5v, like 4.93 or something
 

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susith11454 is offline susith11454
2011-12-03 , 00:00
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#140
Hey can you tell me where the GND wire should be connected???
because when i connect to PC it says Unrecognized device attached something like that
 
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