void setup() { 
// Pin yang di pakai 2 - 6 
pinMode(2, OUTPUT); 
pinMode(3, OUTPUT); 
pinMode(4, OUTPUT); 
pinMode(5, OUTPUT); 
pinMode(6, OUTPUT); 
} 
void loop() { 
 
digitalWrite(2, HIGH); 
delay(300); 
digitalWrite(2, LOW); 
digitalWrite(3, HIGH); 
delay(300); 
digitalWrite(3, LOW); 
digitalWrite(4, HIGH); 
delay(300); 
digitalWrite(4, LOW); 
digitalWrite(5,HIGH); 
delay(300); 
digitalWrite(5, LOW); 
digitalWrite(6, HIGH); 
delay(300); 
digitalWrite(6, LOW); 
digitalWrite(5, HIGH);
delay(300); 
digitalWrite(5, LOW); digitalWrite(4, HIGH); delay(300); 
digitalWrite(4, LOW); digitalWrite(3, HIGH); delay(300); 
digitalWrite(3, LOW); digitalWrite(2, HIGH); delay(300); 
digitalWrite(2, LOW); }