![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
I'm working on a project which uses the RGB LEDs sold by Hobby Components, 20 of them specifically. I'm going to control them using an Arduino, and have in fact been semi successful making 5 of them work, powered directly from the Arduino itself.
But having read the documentation, I know that if I want to use more than 5, I need to use an external power supply - so this is my question to you, what power supply should I be using?
Ideally I only want one wire coming out of my project, so whatever it is should be able to power both the LEDs and the Arduino.
As mentioned, I'm totally new to this, so any advice you can give will be welcome. Thanks.