With this Shield can saving data to files on any FAT16 or FAT32 formatted SD card. The included RTC (Real Time Clock) can be used to timestamp all your data with the current time, so that you know precisely what happened when!
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 Prototyping area for soldering connectors, circuitry or sensors. SD-card IC driver - CD4050 RTC IC - DS1307