One SPI reader is a kind of modulethat enables communication between a microcontroller and a memory card, such as an SD or TF card. The module uses the SPI (Serial Peripheral Interface) protocol to transfer data between the two devices. The SD/TF card shield module is a special type of SPI reader designed for use with microcontroller boards. It provides easy access to data stored on the memory card and can be used for a variety of applications such as data logging, file storage and multimedia projects. The shield connects to the microcontroller via the SPI interface.
Easily and inexpensively expand your Arduino memory space using SD card slot
Easy communication via SPI protocol
Support Micro SD Card(2G), Micro SDHC card (32G)(high-speed card)
Supports 5V