Like described in the subject my Arduino tells me that it couldn't open the SD card. My SD card is formatet with Fat16 and it has only 256 MB.
The Code I'm trying to run is the example "CardInfo" from the Arduino IDE 1.0 compiled with the IDE 1.0.
I connected the Arduino and the SD card like here:http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1206874649/8
Works fine for me. But just with SD Card, MMC failed. Mini/Micro SD never tested.
I changed the cs pin in the exaple to pin 10 because of the wiring above.
So you've edit the example code like that?: const int chipSelect = 10;
And CS Pin SD is realy connected to arduino Pin 10 ?
The whole thing is just for a simple data logger running with 3 3v batteries connected to the VIN. Because of this I have to power the SD card (it uses 3.3V for its logic level) over two more 3,3k and 1,8k resistors for dropping the supply voltage to something arround 3.3V.
why don't you just use 3.3V output from your arduino? more specifically, you don't need external power supply for using sd card with arduino. just arduino is still enough.