Controlling LEDs is really quite simple. As you know, they need to be current limited which is as easy as applying Ohm’s law to your given set of values. To make things even more even there&#… ...

This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer.

The latest is the Connected by TCP Wireless LED Lighting Kit, which will set you up with three LED bulbs, the "Gateway" hub that serves as their collective brain, and a handy remote control.