The Micro SD Storage Board (SPI Shield Module) is a powerful expansion tool for data logging and media storage. At Electrapac, we recommend this module for any project that needs to store large amounts of data—like sensor logs, MP3 files, or bitmap images—that exceed the limited internal memory of a standard microcontroller.

Product Overview

This module allows your Arduino or other microcontrollers to read and write to a standard Micro SD (TF) card. It features an integrated level shifter, which allows the 3.3V SD card to communicate safely with 5V systems like the Arduino Uno. Whether you are building a weather station or a music player, this board makes file management simple and reliable.

Key Features for Electrapac Customers

• Safe Logic Conversion: Unlike cheaper modules, this board includes a level-shifting chip. This ensures your SD card isn't fried when connected to a 5V Arduino.

• Easy SPI Connection: Uses the standard 6-pin SPI header (GND, VCC, MISO, MOSI, SCK, CS), making it compatible with almost all microcontrollers on the market.

• Spring-Loaded Slot: Features a high-quality push-push (or push-pull) slot that holds the Micro SD card firmly in place, even in high-vibration environments.

• Massive Data Storage: Supports FAT16 and FAT32 file systems, allowing you to store years' worth of sensor data on a single 16GB or 32GB card.

• Standard Library Support: Works perfectly with the built-in SD.h library in the Arduino IDE.

Wiring & Setup Guide

For a successful setup from www.electrapac.com, use the following SPI pin mapping for an Arduino Uno:

1. VCC: 5V

2. GND: Ground

3. CS (Chip Select): Digital Pin 4 (Default in most sketches)

4. MOSI: Digital Pin 11

5. MISO: Digital Pin 12

6. SCK (Clock): Digital Pin 13

Pro-Tip: Always format your Micro SD card to FAT32 or FAT16 before use. If the card isn't recognized, ensure your wiring is firm and that you are using a card with 32GB capacity or less.

Primary Applications

• Data Logging: Record temperature, humidity, or GPS coordinates over long periods for analysis.

• Audio Players: Store and play back .wav or .adcm files for talking robots or alarm systems.

• Bitmap Displays: Store images to be displayed on OLED or TFT screens.

• Configuration Files: Save user settings or Wi-Fi credentials that persist even after a power reset.

Why Shop at Electrapac?

We source our Micro SD Modules with robust level shifters and gold-plated contacts to ensure high-speed data transfer without corruption. Visit www.electrapac.com to find this module, high-quality Micro SD cards, and jumper wire sets.