The XD-204 Adafruit Data Logger Shield is a versatile Arduino expansion board designed for reliable data recording and storage applications. It combines an SD card interface with a real-time clock (RTC) module, enabling users to log sensor data with accurate date and time stamps.
This shield allows Arduino boards to store large amounts of data directly onto a micro SD card, making it ideal for long-term monitoring and data acquisition projects. The built-in RTC chip ensures precise timekeeping even when the main power supply is disconnected, thanks to its backup battery support.
The XD-204 shield is compatible with popular Arduino boards such as Arduino Uno, Mega, and compatible microcontroller platforms. It is widely used in environmental monitoring, weather stations, IoT systems, industrial logging, and research data collection projects.
Key Features:
• Integrated SD card data logging
• Built-in Real Time Clock (RTC)
• Date & time stamped recordings
• Backup battery support for RTC
• SPI communication interface
• Easy Arduino shield mounting
• Stable and reliable performance
• Compatible with Arduino libraries
Applications:
• Weather monitoring stations
• Temperature & humidity logging
• IoT data recording systems
• Solar system monitoring
• Industrial data acquisition
• Research & laboratory experiments
Package Includes:
• 1 × XD-204 Data Logger Shield
• RTC backup battery (varies by package)


















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