This code is for the Project - Interfacing Relay Module with Arduino
We have created the complete project where we explain to you the complete working, with the help of -1. Blog/Article - https://www.learnelectronicsindia.com/post/interfacing-relay-module-with-arduino
2. Youtube Video - https://youtu.be/97cAP7IFfd0
Interfacing Relay Module with Arduino-Project Code
The code file will be downloaded in Zip format and you would have to unzip it using Winzip or 7-zip or any other Zip Extractor software.