This project is very inspiring! It is an Arduino project that has two LEDs on green and one red that are controlled via a local web server (AKA my Mac’s Apache Server). The web server is hosting a PHP script that has a user interface. When I click a link it sends a command to the Arduino board to turn on or off each LED. The Arduino board must be connected to the computer that has the web server on it for this to work. The PHP code is open source as well as the library/class that I have used.