“The Basic idea behind this project is to control an electronic appliance using Amazon Alexa or through its app from anywhere in the world. We will be using a Node MCU V1.0 for this. All the code will be on my Github Page. If at any point you don’t understand a step feel free to comment down below and I shall respond to it at the earliest. All Credits for the servers as well as the code goes to kakopappa(https://github.com/kakopappa). I have modified the code to control 4 Relays for the purpose of this tutorial. Well, Lets get started!
Note: This tutorial assumes that you have some knowledge about Arduino IDE and Node MCU.
Node MCU V1.0
4 Relays(Relay Bank)
An External Power Source”