Micro SD Card Module

The module (Micro SD Card Adapter) is a Micro SD card reader module, and the SPI interface via the file system driver, microcontroller system to complete the Micro SD card read and write files. Users can directly use the Arduino IDE comes with an SD card to complete the library card initialization and read-write. 

3.3V voltage regulator circuit :    LDO regulator output is 3.3V level converter chip , Micro SD card supply 
Level conversion circuit :      Micro SD card into the direction of the signal is converted to 3.3V, MicroSD card interfaces to control the direction of the MISO signal is                                                   also converted into 3.3V, general AVR microcontroller system can read the signal .
Micro SD card connector :           a self- bomb deck , easy card insertion . 
Positioning holes :            4 M2 screws positioning hole diameter is 2.2mm, the positioning of the module is easy to install , to achieve inter- module combination.