SD Card Reader/Writer Module with SPI Interface for Arduino

The SD Card Reader/Writer Module is a compact and practical adapter that enables microSD card interfacing with microcontrollers and development boards via the SPI communication protocol. This module, often referred to as a microSD card adapter, allows users to read and write data to and from standard microSD memory cards, effectively removing the storage limitations of devices such as Arduino boards.

The module communicates through a standard SPI interface with MOSI, SCK, MISO, and CS pins, ensuring straightforward connection to microcontrollers like Arduino. A dual-row pin header design simplifies wiring, particularly in laboratory and prototyping environments. Onboard is an AMS1117-3.3 voltage regulator, which accepts either 3.3V or 5V input and converts it to the stable voltage required by SD cards, making the module compatible with both 3.3V and 5V logic systems.

The module measures 48 × 31 mm and works well with devices such as digital cameras, DVRs, GPS units, MP3 players, and MCU/ARM-based control systems. It is important to note that this module does not include internal memory; it serves purely as an interface for accessing data stored on a microSD card. This makes it an ideal solution for projects requiring large-capacity data storage, such as sensor data logging, multimedia file storage, and navigation data recording in GPS tracking systems. Users can take advantage of the default Arduino IDE SD library for initializing the card and managing data operations.