Catalog > Internet of Things (IOT) Related Products > More Platforms Micro SD Wemos D1 Mini Data Logger Breakout Board RTC Arduino Raspberry DS1307 Clock Board for Arduino Raspberry BSK D1 MINI RTC+ DATA LOGGER+SD MINI DATA LOGGER SHIELD RTC DS1307 CLOCK BOARD FOR ARDUINO RASPBERRY Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview Use this Data Log Shield for WiFi D1 Mini board. RTC protected from wrong connecting of battery. SD card interface works with FAT16 or FAT32 formatted cards. Can save data / files on any FAT16 or FAT32 MicroSD card. Battery Type: CR1220 Note: Without battery! Features 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! Real time clock (RTC) keeps the time going even when the power is disconnected. The coin cell battery backsup the last date and time. Specifications DataLog Breakout Board for WeMos D1 mini, with pin-headers set: Male Pin Header: 2x8 pins Female Header: 2x8 pins Stackable Header: 2x8 pins Battery Type: CR1220PinoutRTC: D1 - SCL D2 - SDA CD card: D5 - CLK D6 - DO D7 - DI D8 - CS