Arduino can't create file in sd card
Thank you all...
I found solution for my problem.
The circuit and the sketch isn't any problem. But I saw this and I think problem is because of LC Studio's SD card. In previous circuit I connect 5v pin of SD card to 5v pin on arduino. But now I disconnect that and connect 3v3 pin on card to 3v3 on arduino.
Now it's work very nice. And I don't know "why?" . Any idea?