Micro SD Card Reader Module

Micro SD Card Reader Module – SPI Interface for Arduino, ESP32, and More

Overview:

The Micro SD Card Reader Module is a compact, easy-to-use solution for adding file storage to your microcontroller projects. Using the SPI interface, this module allows boards like Arduino, ESP8266, ESP32, and STM32 to read and write data to a micro SD card, making it ideal for data logging, audio storage, sensor monitoring, and more.

Key Features:

• Supports microSD cards (TF cards) up to 32GB

• Uses SPI interface (MISO, MOSI, SCK, CS)

• Built-in 3.3V voltage regulator for SD card protection

• Onboard level shifting circuitry for safe 5V/3.3V operation

• Compatible with FAT16/FAT32 file systems

• Works with Arduino IDE SD library

• Compact size: easy to integrate in breadboards or custom circuits

Technical Specifications:

Pinout:

Wiring with Arduino Uno:

Sample Arduino Code:

cpp
CopyEdit
#include <SPI.h>
#include <SD.h>

void setup() {
  Serial.begin(9600);
  if (!SD.begin(10)) {
    Serial.println("SD Card failed or not present.");
    return;
  }
  Serial.println("SD Card initialized.");
}

void loop() {
  // Your logic here
}

Applications:

• Data logging (temperature, humidity, GPS)

• Audio file storage (MP3 players)

• Project backup and configuration files

• IoT systems needing removable memory

Useful Links:

• 📹 How to Use SD Card Module with Arduino: Watch on YouTube

• 📚 Arduino SD Library Reference: Arduino Docs

• 🧰 GitHub Library: SD Library on GitHub

• 📄 Datasheet: Download PDF