Correct power supply for my project
For a project like this you should use a self contained switching regulator.

The device you linked would be more accurately described as a switching controller. Unlike a 7805, it requires many external components with specific values to function correctly.

That's fine if you're going to build hundreds of something. But for one-offs it makes much more sense to use a self contained regulator that includes all the passives. Here're some examples that I've used in the past with good results:

DROK 1.5A Switching Buck Regulator, With Numeric Control

Same thing but with a pot instead of buttons

Adafruit 5v UBEC 3A

Dimension Engineering DE-SW050 (This is a very popular drop in replacement for the 7805)

And here's a picture of what I'm talking about for the future when all the links may be dead: