Quantity   Component name
1 × ESP8266 ESP-12e Devkit Board Or similar ESP8266 board will do. This board is great, and can be obtained from banggood or similar online stores. http://www.banggood.com/Geekcreit-Doit-NodeMcu-Lua-ESP8266-ESP-12E-WIFI-Development-Board-p-985891.html
1 × 0.96 Inch 4Pin IIC I2C Blue OLED Display Module For Arduino 4-wire I2C module. http://www.banggood.com/0_96-Inch-4Pin-IIC-I2C-Blue-OLED-Display-Module-For-Arduino-p-969147.html