In this video I walk though building Christmas lights using the Arduino Nano and a strand of LED lights. I will touch on the design itself along with walk through the code.
The Nano is a nice little compact microprocessor unit that allows you to control several IO and a reasonable cost.
The following is a high level view of the circuit.
The following link contains the circuit diagram, the source code and other files that you may find helpfull.
Here is the video.
If you have any questions or would like to learn more please leave a comment and I will get back to you.
Here is a video of me showing you the lights in action.