Micro SD Card SPI Module for Arduino

Micro SD Card SPI Module for Arduino

The Micro SD Card SPI Module for Arduino provides a simple way to read and write files on a Micro SD or TF memory card. It communicates with the microcontroller through the standard SPI interface.

This module works well for projects that need removable storage. For example, you can save sensor readings, system events, configuration files, text, or audio data.

In addition, the onboard voltage regulator supplies the low voltage required by the memory card. Therefore, the module offers convenient integration with many development boards.

Key Features

• Supports Micro SD and TF memory cards
• Uses the standard SPI communication interface
• Onboard 3.3V voltage regulator
• Easy connection to Arduino development boards
• Works with compatible ESP8266, ESP32, STM32, and Raspberry Pi systems
• Suitable for reading and writing different file types
• Removable and reusable storage solution
• Compact design for embedded projects
• Standard pin headers for easy wiring
• Compatible with common SD card software libraries

Technical Specifications

• Product Type: Micro SD card reader module
• Supported Media: Micro SD / TF cards
• Communication: SPI
• Onboard Regulation: 3.3V
• Typical Supply Input: 5V DC
• Logic Interface: SPI-compatible
• Card Socket: Push-in Micro SD card slot
• Installation: PCB module with pin headers

Module Pinout

• VCC: Module power input
• GND: Ground connection
• CS: SPI chip-select signal
• SCK: SPI clock signal
• MOSI: Data from the controller to the card
• MISO: Data from the card to the controller

Always check the labels printed on your module before connecting the pins. Some production versions may arrange the pins differently.

Applications

This module suits many storage and data-recording projects, including:

• Temperature and humidity data loggers
• Weather monitoring stations
• GPS tracking and route recording
• Arduino file-storage projects
• Audio playback systems
• CNC and 3D printer controllers
• Robotics and automation projects
• Configuration and calibration storage
• Portable measurement equipment
• Embedded monitoring systems

Important Usage Notes

Micro SD cards use low-voltage signaling. However, the exact regulator and logic-level circuit can vary between module versions. Check the board markings before connecting it to a 3.3V controller.

Furthermore, card capacity and file-system support depend on the selected memory card, controller, and software library. Format the card with a compatible file system before use.

Finally, disconnect the power before inserting, removing, or rewiring the module during development.

Package Includes

• 1 × Micro SD Card Reader Module

Note: The package does not include a Micro SD memory card.