This is a where a Power Mosfet comes in. With the help of the Power Mosfet, we can use the low voltage output from the Arduino ports to control high voltage/current loads -the popular “12V LED strips” ...

They're 12v so the arduino powers one lead at 5v for the signal, the ground is shared between the 5v and 12v, and finally the LED's are driven by a 12v source separate from the arduino (12v x 2a ...

All the info you need right here ✦ In this occasion I'll make a lighting system to be controlled remotely from my rc using ...