SD Card Module Slot Socket Reader For Arduino (Data Logger Projects)

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SD Card Module simplifies and simplifies your SD application. It connects to the Arduino sensor shield module easily as a peripheral. You can read and write to the SD card with Arduino through programming. SD Card may also be utilized to make development easier, such as for MP3 players and MCU/ARM system control.


  • Communication : SD SPI ( MOSI, SCK, MISO and CS )
  • DC Input : 5V/3.3V
  • Size : 5.1cm x 3.1cm - 2.01inch x 1.22inch. 

SD Card Pinouts:

Reader           Uno      Mega

1. GND
2. 3.3Vcc
3. +5Vcc
4. CS                   10    10
                     11    51
6. SCK
                       13    52
                    12     50
8. GND

Arduino SD Card SD Card Module Slot Socket Reader Tutorial

Format Your SD Card

You will need an SD Card. The format that SD Card using Windows to a FAT32 volume.

Connect the Arduino SD Card Module to your Arduino

as you saw in the pinout section above please connect the module accordingly you can connect the module to the VCC using 3.3 or 5 volts the 5 volts is connected on the module using an onboard regulator

Simple code to be sure that the SD card Reader is working:

int cs = 10; // Set chip Select to pin ten
void setup()
 // Open serial communications and wait for port to open:
 while (!Serial) {
 Serial.println("Initializing SD card...");
 pinMode(cs, OUTPUT);
 // Documentation says you're supposed to do this
 // even if you don't use it:
 pinMode(SS, OUTPUT);
 // see if the card is present and can be initialized:
 if (!SD.begin(cs)) {
 Serial.println("SD did not initiliaze");
 while (1) ;
 Serial.println("SD initialized.");
void loop()