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2011-05-06
, 13:57
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Posts: 63 |
Thanked: 37 times |
Joined on Jul 2010
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#12
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2011-05-06
, 18:01
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Posts: 99 |
Thanked: 64 times |
Joined on Jun 2009
@ Stuttgart/Germany
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#13
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2011-05-06
, 20:59
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Posts: 232 |
Thanked: 44 times |
Joined on Feb 2010
@ Austria, Amstetten
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#14
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2011-05-07
, 08:15
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Posts: 456 |
Thanked: 1,580 times |
Joined on Dec 2009
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#15
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..there is the USB connection!!
I can confirm that the two pads marked as Data+ and Data- are working. I just flashed my device using them, 5V+ and GND.
The device was only recognized over USB while also the battery was attached. That's a little bit tricky if you have it open and wires to the pads connected, but it worked! YEAH I got my phone back ))
So it'll charge by shorting data+ and data- with 2.2ohm resistor?
But obvisously a data connection will not be possible then.
So how can we can get a working data connection using those pads then?
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2011-05-08
, 22:21
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Posts: 33 |
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Joined on Feb 2009
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#16
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2011-05-09
, 07:07
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Posts: 1,411 |
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Joined on Jan 2010
@ Tatooine
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#17
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..there is the USB connection!!
I can confirm that the two pads marked as Data+ and Data- are working. I just flashed my device using them, 5V+ and GND.
The device was only recognized over USB while also the battery was attached. That's a little bit tricky if you have it open and wires to the pads connected, but it worked! YEAH I got my phone back ))
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2011-05-10
, 21:38
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Posts: 99 |
Thanked: 64 times |
Joined on Jun 2009
@ Stuttgart/Germany
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#18
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Yes - please provide more info about which connections etc you used.
I'm looking to bring my 'spare' n900 back to life
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2011-05-23
, 19:44
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Posts: 99 |
Thanked: 64 times |
Joined on Jun 2009
@ Stuttgart/Germany
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#19
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2011-05-26
, 23:14
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Posts: 2,222 |
Thanked: 12,651 times |
Joined on Mar 2010
@ SOL 3
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#20
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Actually, you do get access to the USB connector via these pads.
I managed to charge the battery having +5V and GND connected to a 5V power source.
Please be aware that this is highly experimental and you do this all at your own risk!
By messing with your device in this way you'll for sure loose warranty!
Furthermore, you may damage or even destroy your device!
Having said that, lets move on:
In order for the charging to begin +Data and -Data need to be connected (via some resistor ~2.5 Ohm) prior to connecting the power source.
Else simply nothing happens.
Note: I measured whats going on with the default power supply on +Data and -Data and it showed a resistance of 2.5 Ohm.
I used a 2.2 Ohm resistor and also tried to simply shorten +Data and -Data.
In both cases the battery started charging after connecting the power source.
I attached an image of the pins I used.
Edit: I added my stuff in orange color.
GND of course still is the same.
Tags |
test points, usb port |
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While charging worked with that setup an USB connection with the normal port was not possible anymore.
I think I'll revert back to plan b and use a small dip switch until there is a more elaborate solution...
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Last edited by Wonko; 2011-05-01 at 16:20.