Data Longer SD Card Hot Reader Writer +DS1307 Real Time Clock Module
BONUS BATTERY RTC
Features: -SD card interface works with FAT16 or FAT32 formatted cards. -Built in 3.3v level shifter circuitry lets you read or write super fast and prevents damage to your SD card -Real time clock (RTC) keeps the time going even when the Arduino is unplugged. -The coin cell battery backup lasts for years -Included libraries and example code for both SD and RTC mean you can get going quickly Prototyping area for soldering connectors, circuitry or sensors. -Two configurable indicator LEDs Onboard 3.3v regulator is both a reliable reference voltage and also reliably runs SD cards that require a lot of power to run -Uses the "R3 layout" I2C and ICSP/SPI ports so it is compatible with a wide variety of Arduinos and Arduinocompatibles