void setup() {
  //
pinMode(2, INPUT);
pinMode(3, INPUT);
pinMode(4, INPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
}
void matikan() {
digitalWrite(5, LOW);
digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);
digitalWrite(10, LOW);
digitalWrite(11, LOW);
digitalWrite(12, LOW);
delay(500);
}
void keatas() {
digitalWrite(5, LOW);
digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);
digitalWrite(10, LOW);
digitalWrite(11, LOW);
digitalWrite(12, HIGH);
delay(500);
//2
digitalWrite(11, HIGH);
delay(500);
digitalWrite(10, HIGH);
delay(500);
//3
digitalWrite(9, HIGH);
delay(500);
digitalWrite(8, HIGH);
delay(500);
//4
digitalWrite(7, HIGH);
delay(500);
digitalWrite(6, HIGH);
delay(500);
//5
digitalWrite(5, HIGH);
delay(500);
 }
void loop() {
keatas();
}