If you’re bit-less, they’re also now selling an Arduino-centric starter kit with the Arduino module and 8 others (a battery, a few switches, a servo, and a control dial) for $89.

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 ...