4,200 home structure fires per year started with the ignition of natural gas. That is a frightening statistic. About 40 people die every...

In this blog, we will learn to make a calculator by interfacing a 4x4 keypad which takes input from the user and performs the operations.

In this article, we will learn how to interface 20 X 4 LCD with NodeMCU using I2C communication module.