First of all most of this will be carried over from some posts I made about six months agao on my local reef clubs forum but all this can be applied to dart fanatics that want to add moon lighting to their cages. Chances are you will not want more than a couple LEDs per enclosure but those of you that have multiple enclosures in a close proximity can use the same power source for many LEDs.

Here is what you will need to get your project started.

1. An old cell phone...