A tiny sample project that makes your ESP8266 a client of an MQTT broker via WiFi connection.

On startup your board will try to connect to the specified WiFi network and will blink the built in ESP LED (GPIO 2) at 2 revolution per second while doing so. Once successfully connected the node LED (GPIO 16) will blink at 1 revolution per 5 seconds. If started with "#define DEBUG" it will log the progress via the Serial port.