I want to start a data logging project. The eeprom memory is very less. So, I want to use a SD card. However SD card shields are expensive. There is no way I can afford them nor are they available in India. I have seen some SD card breakout boards. They seem to be cheap. Will such breakout boards do the job. Will they run out of the box or will I have to do some work to modify them?
And what protocol is used to read and write from and to a SD card. Also how many pins will it take.