Hello world, after a long time i decided to mod the sd card slot of the nokia n900. This necesity came from the need to quick insert/remove sd card. I am building a tablet based on raspberry pi, and i need to modify some files on the raspbian os (raspberry pi main os) wich is stored on an sd card. Windows does not "see" linux partitions, so i needed a linux pc that is always on, and has sd slot - the n900!
I always thought that removing the entire battery cover to change the card is akward, but now this became a problem since i had to modify and test the files on the raspberry, then edit them again, i had to open the battery cover too many times.

So first i remove the card slot from an old lg ks360:



Then i removed the slot form nokia n900, except the pins since i soldered the contact wires on them:



After that i placed the lg slot on the pins (isolated with capton tape):



Next i solderes some small wires form nokia pins to lg slot, and the slot itself to the board with lot of tin to make sure it wont move from its place:





The next step was to carefully cut the case to look like it was designed that way and ansamble it:



Here is with the card inserted:



Next thing was to modify the kickstand in order to mount/unmount the card. On nokia n900 mounting/unmounting the card is done by the small magnet on the battery cover that hold the kickstand closed.
All i had to do was to put the magnet on the kickstand and the small iron plate on the baterry cover:





Now mounting/unmounting the sd card is as simple as open/close the kickstand. I never used the kickstand to hold the phone especially since i had to cut it in 2 becase of the solar panel, so now i finally get a use for that kickstand
Here are 2 more pictures with the phone (top view):

without the card


with card


I also want to say that after a year of using the modified n900, as the main phone, with regular usb port on the bottom, and the solar panel on the cover, it still work perfectly, and never had any problems with it. A really good phone, that simply cannot be beaten by any other one, even in 2014
Edit: until the great Neo900 comes out!