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Posts: 1,411 | Thanked: 1,330 times | Joined on Jan 2010 @ Tatooine
#6
Originally Posted by Storm_11 View Post
I've read about somebody wanting to try this, or perhaps achieved it, but can't find where.

http://www.cpkb.org/wiki/Nokia_N900_pinout

and

http://www.cpkb.org/wiki/Micro-USB_pinout

Using these, the back of the pcb of the n900:



Microusb cable:


* 1 - (black) GND / ground
* 2 -
* 3 - (green) Data +
* 4 - (white) Data -
* 5 - (red) VDC / plus / +5V
* 6 - shield

Using this data:

Is it possible to create a new Microusb connection? Where my microusb connection was, there are no more metal solder points to be able to repair the microusb port.

Unsure 100% of the following:
Line up TX with Data +
Line up RX with Data -
GND with GND

But then where does one obtain the positive voltage (usually 5v). On the cable this is VDC +5v, but the battery positive cannot supply this voltage.VCC according to the link "Common Collector Voltage - main power supply ( usually 5V )". But would this work? the provided link doesnt actually specify where VCC is.

The cable would then be routed to where the microusb was. So I'[d attach a new microusb port, with the cables being soldered from the new microusb port, to the connections above.

edit: I already have a desktop charger. I also use TinySMB to transfer my files to and from pc. The only reason I'd have for doing this is if I want to reflash.
Can you confirm if you managed to do this? I've recently acquired a second-hand n900 with broken USB port, and was wondering if I could add my own port using the connections identified in the 1st pic.

But the question is, where to get the +5 volt connection from?
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