Datasheet

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 onfigurable 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 Arduino-compatibles

With this new version you can use it with:

Arduino UNO or ATmega328 compatible - 4 analog channels at 10 bit resolution, 6 if

RTC is not used

Arduino Leonardo or ATmega32u4 compatible - 12 analog channels at 10 bit

resolution

Arduino Mega or ATmega2560 compatible - 16 analog inputs (10-bit)

Arduino Zero or ATSAMD21 compatible - 6 analog inputs (12-bit)

Arduino Due compatible - 12 analog inputs (12-bit)

Of course you can log anything you like, including digital sensors that have Arduino

libraries, serial data, bit timings, and more!