RedShoe

I got 40 LEDs and according to the guy at the electronics place ElectronicCity.com he did some quick math problem and figured I'd need a 12v power supply with like 240 ohm resistors? Or something.

Luckily I know how to wire them in a series based on a crude drawing I found online. He told me I'd need 2 then a resistor, and repeat that. So I did.

He even told me HOW to figure the resistor (don't ask me now, but he did show me.) I just glazed over and asked him to do the math for me. He did.

Now then, as far as the 9v vs 12v and the amount of room I have. The 6 AA's can wrap around the contour of the project better than a clunky 9v. Think like the chamber of a revolver gun. The AA'a would hug the contour like the bullet chambers of a revolver, whereas the 9v doesn't really "wrap around" very well.

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