This is a Mini Real-Time Clock module, it design for Raspberry Pi, but it also can be used to Arduino.Ā Ā Pluging it into Raspberry Pi GPIO interface, and all is ok. This is the easiest way to keep it in time. Ā Features: Smaller Work in 3.3V and 5V Supported Raspberry Pi and Arduino Ā Specification: DS3231 RTC IC Self-adjust 3.3V and 5V Size: 14x14x12 mm Ā Include: 1x RTC Module 1x Battery Ā Document: Adding a Real Time Clock to Raspberry Pi(via learn.adafruit.com)
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