Getting Started

Before we can use the NodeMCU board we need to install the ESP8266 board and it's library on the Arduino IDE in order to use the WiFi functionality. This will be done as follows:

Open the Arduino IDE software on your computer. Go to File> Preferences

Adding NodeMCU board (randomnerdtutorial.com)

Add the link: http://arduino.esp8266.com/stable/package_esp8266com_index.json to the “Additional Boards Manager URLs” field as shown in the figure below. Then, click the “OK” button:

Open the "Boards Manager" and go to Tools > Board > Boards Manager

Board Manager ( randomnerdtutorial.com)

Search for ESP8266 and press install button for the “ESP8266 by ESP8266 Community“:

Installing the ESP8266 board (randomnerdtutorial.com)

In a few second, you should be able to see the following: