Optima amperage input for Ardunio Uno

Hi all,

The subject pretty much tells the story.

It's going to be hooked up to a car that will be charging at 14.6v. Would like to keep it at a 9v input to the board. I can find output amperage's for the board but I don't see a clear input amperage?

Any suggestions or ideas?

Thanks

Would like to keep it at a 9v input to the board.

What is the input: digital, analog or power connector?

Input for the VIN pin. power input

Depends on what kind of arduino board you have, for UNO if nothing connected (stand alone) about 20 -30 mA.

Magician:
Depends on what kind of arduino board you have, for UNO if nothing connected (stand alone) about 20 -30 mA.

not sure if I know what you mean?
I am going to be running 2 PWM outpins, 12 LEDs and one temp input.
Hope that helps.

You need to calculate a max current for LED's and add up to "idle" current of the board.

Magician:
You need to calculate a max current for LED's and add up to "idle" current of the board.

That makes sense!
Thanks a lot!