Mini MicroSD Card Data Logger Module

The Mini Data Logger Module is a compact and versatile MicroSD card interface board designed for logging sensor data, timestamps, and system events in Arduino, Raspberry Pi, and other embedded development platform projects. Purpose-built for makers, students, and IoT developers, this module provides a simple and reliable way to store data locally onto a standard MicroSD card — making it an essential component for any data acquisition or monitoring project.

Communicating over the SPI interface, the module integrates seamlessly with Arduino UNO, Nano, Mega, ESP8266, ESP32, and Raspberry Pi with minimal wiring. Many variants of this module also include an onboard real-time clock (RTC) IC with a CR1220 coin cell backup, enabling accurate timestamping of logged data even through power cycles — ideal for long-term environmental monitoring, weather stations, and field data collection applications.

Compact in footprint and straightforward to use with widely available libraries, this data logger module is the perfect starting point for any project requiring persistent local data storage.

Specification:

• Storage Interface : MicroSD Card (FAT16 / FAT32)
• Communication : SPI Interface
• Supply Voltage : 3.3V – 5V DC
• Logic Level : 3.3V / 5V Compatible
• RTC IC : DS1307
• RTC Backup : CR1220 Coin Cell Battery (Battery not included)
• Supported Card Size : Up to 32GB MicroSD
• Compatible Platforms : Arduino, ESP8266, ESP32, Raspberry Pi
• Board Dimensions : 38 x 26 mm (approx.)

Battery not included