void setup() {
pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(8,OUTPUT);
}
void loop() {
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13,LOW);
delay(1000);
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13,LOW);
delay(1000);
digitalWrite(12, HIGH);
delay(1000);
digitalWrite(12,LOW);
delay(1000);
digitalWrite(12, HIGH);
delay(1000);
digitalWrite(12,LOW);
delay(1000);
digitalWrite(8, HIGH);
delay(1000);
digitalWrite(8,LOW);
delay(1000);
digitalWrite(8, HIGH);
delay(1000);
digitalWrite(8,LOW);
delay(1000);
}