ESP8266

ESP8266 WiFi Module
Espruino - ESP8266 - http://www.espruino.com/ESP8266

http://www.espruino.com/refimages/ESP8266_module.jpg

http://www.espruino.com/refimages/ESP8266_pinout.png

ESP8266 WiFi Module Quick Start Guide - http://rancidbacon.com/files/kiwicon8/ESP8266_WiFi_Module_Quick_Start_Guide_v_1.0.4.pdf

Hack a Day
ESP8266 tagged | Hackaday http://hackaday.com/tag/esp8266/

Arduino Support
Arduino IDE Support for the ESP8266 | Hackaday - http://hackaday.com/2015/03/28/arduino-ide-support-for-the-esp8266/

esp8266/Arduino · GitHub - https://github.com/esp8266/arduino

"The basic functions of the Arduino IDE – pinMode, digitalRead, digitalWrite, and analogRead – are available. Most of the WiFi functions work just like the WiFi shield library."

Direct Programming
How to Directly Program an Inexpensive ESP8266 WiFi Module | Hackaday - http://hackaday.com/2015/03/18/how-to-directly-program-an-inexpensive-esp8266-wifi-module/

Part List

 * http://www.ebay.com/itm/301380778878
 * http://www.ebay.com/itm/181677878884
 * http://www.ebay.com/itm/371241193597