An easy Arduino Uno project that recreates K.I.T.T's front-mounted scanner bar from the iconic Knight Rider TV show using two 74HC595 shift registers.
The scanner bar is made out of 16 LEDs hooked up to two 74HC595 shift registers, which are controlled by the Arduino Uno. See the schematic for the breadboard wiring diagram.
If you are unfamiliar with using 74HC595 shift registers, then you can read about them on the Arduino website. An understanding of how these registers work is not necessary in order to create this project.
If you'd like to see the circuit in action then click here to see an animated GIF.