How to interface RTC module with Arduino and ESP Board

How does work RTC(Real Time Clock) module with Arduino. - SriTu Hobby

How to Make a Digital Clock at Home Using Arduino & RTC Module - Auto Time Set

Arduino LED - Complete Tutorial - The Robotics Back-End

Arduino - Turn LED ON and OFF With Button - The Robotics Back-End

GETTING STARTED WITH THE ARDUINO – CONTROLLING THE LED

How to Make a Digital Clock at Home Using Arduino | Full Tutorial

Arduino clocks

3D Printed Arduino Based Analog Digital Clock - Reincarnated.