Adalogger FeatherWing - RTC + SD Add-on For All Feather Boards

This FeatherWing will make it real easy to add datalogging to any of Adafruit's existing Feathers. You get both an I2C real time clock (PCF8523) with 32KHz crystal and battery backup, and a microSD socket that connects to the SPI port pins (+ extra pin for CS). Tested and works great with all Feathers.

Does not come with a micro SD card. A CR1220 coin cell is required to use the RTC battery-backup capabilities! If you're not using the RTC part of the FeatherWing, a battery is not required.If you need a precision RTC, check out the DS3231 FeatherWing