Can I feed Arduino with 18v?

Using Arduino Motors, Mechanics, Power and CNC
1

Hello, everyone!

I'm a spanish guy and I'm building a robot for a school project.

In my robot, I have 3 servos and I want to give each one 6v, so I have to feed my arduino with 18v.

Can I do it without breaking my arduino?

Thanks

2

You will need some kind of voltage converter to bring the voltage down to the recommended range of 7-9V. Or a 5V regulator, supplying the 5V pin.

3

But, if I do that, will the servos be as efficience as if I feed them with 18v?

4

Power the servos separately.

You don't need to add the servo voltages. All of them should share a common ground with the Arduino. You do need to add the current. Each servo will draw two or three amps so you need six to nine amps available at the supply.

5

Here's a pic showing how to hook them up.

servos wiring cropped.jpg
servos wiring cropped.jpg1801×1277 135 KB

6

Beltran2002:
In my robot, I have 3 servos and I want to give each one 6v, so I have to feed my arduino with 18v.

Incorrect. You need to provide 6V. And plenty of current (at least 3A).