Datasheet

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Guide Contents
Guide Contents
Overview
Pinouts
Power Pins
RTC & I2C Pins
SD & SPI Pins
Assembly
Using the Real Time Clock
What is a Real Time Clock?
Battery Backup
CR1220 12mm Diameter - 3V Lithium Coin Cell Battery
RTC with Arduino
Wiring
Talking to the RTC
First RTC test
Setting the time
Reading the time
RTC with CircuitPython
Wiring
Adafruit CircuitPython Library Install
Usage
Setting the time
Using the SD Card
4GB Blank SD/MicroSD Memory Card
USB MicroSD Card Reader/Writer - microSD / microSDHC / microSDXC
Formatting under Windows/Mac
Get Card Info
Next steps!
Example logging sketch
CircuitPython
Adafruit CircuitPython Module Install
Usage
Initialize & Mount SD Card Filesystem
Reading & Writing Data
List Files
Downloads
Datasheets and Files
Schematic
Fabrication Print
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