Then go to Tools à Board à Boards Manager.Copy this URL: and paste it into Additional Boards Manager URLs as highlighted below.Go to File a Preferences to open the Preferences window in the Arduino IDE.This question must be wondering in your mind why use Arduino IDE to program ESP8266 ? Because there are many open source libraries are available which you can use and develop your IOT project in no time. The codes written in Arduino IDE are called Sketches.

The software is also open source and freely available for download for Windows, Mac OS X, and Linux. The Arduino integrated development environment (IDE) itself is a Java program that creates an editor environment for you to write, compile, and upload your Arduino programs. So this ESP8266 installation process in Arduino will help you program any type ESP8266 board like Nodemcu, ESP01 etc. You can find many variants of ESP8266 boards in market and you can program all these development board using Arduino IDE. So you can program ESP modules using Arduino IDE and C++ programming language. If you want to know about ESP8266 modules, development boards, and pinouts, you can find it over here. In this tutorial, you are going to download and install all the core files required to interface ESP8266 with Arduino IDE.

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