This is my first arduino project and I am planning on doing something with an 5v 4m led strip. I have to use a power source that is capible of giving my led strip enough current to light my leds up with white light at almost/maximum brightness. If I am correct than that shout use around 12a. The problem is that there are pretty much no power supply's available for this high current or they are very expansive. I have read something about dc-dc adapter that increase in current and and decrease tour voltage but I am not so familiar with that yet. Hopefully someone can explain this to me.
By the way my ledstrip uses 60 leds per meter