Instructions
Start Arduino and open Preferences window.
Enter
https://arduino.esp8266.com/stable/package_esp8266com_index.jsoninto Additional Board Manager URLs field. You can add multiple URLs, separating them with commas.Open Boards Manager from Tools > Board menu and find esp8266 platform.
Select the version you need from a drop-down box.
Click install button.
Don’t forget to select your ESP8266 board from Tools > Board menu after installation.
Manually Adding Board Manager
To manually add the board manager for ESP8266 perform the following steps:
...
> git checkout 2.4.2
Restart the Arduino IDE
References
| Reference | URL |
|---|---|
| ESP8266 Home | https://github.com/esp8266/Arduino |
| Installing Board Manager | https://arduino-esp8266.readthedocs.io/en/latest/installing.html |