​

void setup() {

pinMode (8, OUTPUT);

pinMode (9, OUTPUT);

pinMode (10, OUTPUT); 

pinMode (11, OUTPUT);

}

 

void loop() {

 digitalWrite (8, HIGH); 

 delay (50); 

 digitalWrite (8, LOW);

 digitalWrite (9, HIGH); 

 delay (50); 

 digitalWrite (9, LOW);

 digitalWrite (10,HIGH); 

 delay (50);

 digitalWrite (10, LOW); 

 digitalWrite (11, HIGH); 

 delay (50); 

 digitalWrite (11, LOW);

 digitalWrite (10, HIGH);

delay(50);

digitalWrite (10, LOW);

digitalWrite (9, HIGH);

delay(50);

digitalWrite (9, LOW);

digitalWrite (8, HIGH);

delay(50);

digitalWrite (8, LOW);

​

​

}