This is the SPI data out from the SD Card Module. -> MOSI Stands for Master Out Slave In. This is the input pin of the SD Card Module. -> SCK Stands for Serial Clock as the name implies it is the data ...

Assume that you need to log some of your readings from the input pins of your Arduino Uno (or MEGA, etc.) dev board which needs to work standalone. The proper way is to store the log in an SD card ...