Description

The Micro SD / SDHC Card Reader SPI Module is a small and efficient module designed for Arduino and other microcontrollers.
It allows you to easily interface micro SD or SDHC cards for data logging, file storage, and playback applications.
This module supports FAT file systems and can automatically recognize and play voice files in 4Bit ADCPM format.
With audio output available via 16-bit DAC and PWM, it can be used in DIY audio projects, sound playback systems, and
embedded data storage solutions. Its low power consumption and SPI interface make it suitable for battery-powered projects.

Features:

• Simple SPI communication protocol
• Works with SD and SDHC memory cards
• FAT file system compatibility
• Voice playback support (4Bit ADCPM)
• 512 maximum voice storage capacity
• Audio output: 16-bit DAC + PWM
• Very low quiescent current (16µA without card)
• Designed for Arduino and embedded systems

Applications:

• Data logging for Arduino projects
• DIY audio playback systems
• Voice announcement systems
• Embedded file storage solutions
• Portable electronics and IoT devices

Technical Specifications:

Please allow 3% measuring deviation.

Package:

• 1x Micro SD / SDHC Card Reader SPI Module for Arduino

Documentations:

• Arduino SD Library
• Micro SD Module Tutorial

How to Use (DIY Mini Blog):
Using the Micro SD / SDHC SPI module with Arduino is simple. Connect VCC to 3.3V, GND to ground, and MISO, MOSI, SCK, CS to the respective Arduino SPI pins.
Insert a formatted micro SD card (FAT16 or FAT32). Using the Arduino SD library, you can read, write, and manage files directly from your microcontroller.
If using audio playback, the module can automatically recognize ADCPM files and output audio via DAC or PWM pins. Ideal for logging sensor data or building DIY voice announcement systems.