Datasheet

Using the SD Card

The other half of the data logger shield is the SD card. The SD card is how we store long

term data. While the Arduino chip has a permanent EEPROM storage, its only a couple

hundred bytes - tiny compared to a 2 gig SD card. SD cards are so cheap and easy to get,

its an obvious choice for long term storage so we use them for the shield.

The shield kit doesn't come with an SD card but we carry one in the shop that is guaranteed

to work (http://adafru.it/aIH). Pretty much any SD card should work but be aware that some

cheap cards are 'fakes' and can cause headaches.

You'll also need a way to read and write from the SD card. Sometimes you can use your

camera and MP3 player - when its plugged in you will be able to see it as a disk. Or you may

need an SD card reader (http://adafru.it/939). The shield doesnt have the ability to display

the SD card as a 'hard disk' like some MP3 players or games, the Arduino does not have the

hardware for that, so you will need an external reader!