The easiest and most reliable way to download is directly through the Arduino IDE Library Manager . This ensures you get the latest compatible version without manually moving files. Method 1: Using the Arduino Library Manager (Recommended) Open the Arduino IDE.
To use a Real-Time Clock (RTC) module with your Arduino, you'll need the library. This library provides the essential functions to read and write time data to common RTC chips like the DS3231, DS1307, PCF8523, and PCF8563 . How to Download and Install RTClib download rtclib.h for arduino