Datasheet

You will see the red and blue onboard LED flicker when powered up, but they will not stay lit.

Install the Arduino IDE 1.6.4 or greater

Download Arduino IDE from Arduino.cc (1.6.4 or greater) - don't use 1.6.2! You can use your existing IDE if you have

already installed it

You can also try downloading the ready-to-go package from the ESP8266-Arduino project, if the proxy is giving you

problems

Install the ESP8266 Board Package

Enter http://arduino.esp8266.com/stable/package_esp8266com_index.json into

Additional Board Manager URLs

field in the

Arduino v1.6.4+ preferences.