Datasheet

If you have a bad card, which seems to happen more with ripoff version of good brands, you might see:

The card mostly responded, but the data is all bad. Note that the Product ID is "N/A" and there is no Manufacturer ID

or OEM ID. This card returned some SD errors. Its basically a bad scene, I only keep this card around to use as an

example of a bad card! If you get something like this (where there is a response but its corrupted) you should toss the

card

Finally, try taking out the SD card and running the sketch again, you'll get the following,

It couldn't even initialize the SD card. This can also happen if there's a soldering error or if the card is

really

damaged

If you're having SD card problems, we suggest using the SD formatter mentioned above first to make sure the card is

clean and ready to use!

Next steps!