Is L7805 still needed when using an LM2596?

Hi there!
I'm creating my first standalone project that has to be mounted in my motorcycle.
The power supply will be a 12V battery (5Ah 30A), so I need to convert from 12 to 5V.
I bought an LM2596, but since I'm a complete ignorant, does it need the help of an L7805 or it does all the job alone?
Also, on the LM2596 there are IN+, OUT+ and IN-, OUT-, what is the difference?

Thank you guys for your help and time!

Unless you bought the LM2596 component alone, you have a board using the LM2596.
In that case you will use that, and ditch the 7805.

The In/Out- are the negative (ground)-terminal.

// Per.

Ye, sorry, I mean I bought the whole LM2596 module. So I don't need the L7805.

I just didn't understand that thing about IN/OUT +/-. Shouldn't the ground be only out? I'm confused. :blush:

Thank you.

The ground is common, so it doesn't matter.

// Per.

So is this correct?

Battery+ >> IN+ >> OUT+ >> Arduino5v >> OUT- >> IN- >> Battery-

thanks

Yes

// Per.

(5Ah 30A)

Batteries are rated by Ah so what does the 30A represent ? (peak current max ?)

I bought an LM2596, but since I'm a complete ignorant

You DID buy all the support components right ? (1N5824, 33uH coil,(5A), 230uF cap, 680uF cap)

This is the battery and this is the module

Oh , got it, you meant breakout bd. ok. cool.
Can you post the link where you got it ?

I bought it on Ebay =)

Thanks. That's a very convenient circuit.