#include <Stepper.h>

void setup() {
  // put your setup code here, to run once:
  DDRD = B11111111;
}

void right(){
  for(int x = 0; x < 6; x++) {
    PORTD = B00000001; delay(10);
    PORTD = B00000010; delay(10);
    PORTD = B00000100; delay(10);
    PORTD = B00001000; delay(10);
  }
}

void left() {
  for(int x = 0; x < 6; x++) {
    PORTD = B00001000; delay(10);
    PORTD = B00000100; delay(10);
    PORTD = B00000010; delay(10);
    PORTD = B00000001; delay(10);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  right();
  delay(1000);
  left();
  delay(1000);

}