Installing the Addon With the Arduino Boards Manager
With the release of Arduino 1.6.4, adding third party boards to the Arduino IDE is easily
achieved through the new board manager. If you’re running an older version of Arduino (1.6.3
or earlier), we recommend upgrading now. As always, you can download the latest version of
Arduino from arduino.cc.
To begin, we’ll need to update the board manager with a custom URL. Open up Arduino, then
go to the Preferences (File > Preferences). Then, towards the bottom of the window, copy this
URL into the “Additional Board Manager URLs” text box:
COPY CODE
http://arduino.esp8266.com/stable/package_esp8266com_index.json
If you already have a URL in there, and want to keep it, you can separate multiple URLs by
placing a comma between them. (Arduino 1.6.5 added an expanded text box, separate links
in here by line.)
Hit OK. Then navigate to the Board Manager by going to Tools > Boards > Boards Manager.
There should be a couple new entries in addition to the standard Arduino boards. Look
for esp8266. Click on that entry, then select Install.