#define LED1 13
#define LED2 12
#define LED3 11
#define LED4 10
#define LED5 9

void setup() {
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(LED3, OUTPUT);
pinMode(LED4, OUTPUT);
pinMode(LED5, OUTPUT);

}
void loop() {
digitalWrite(LED1, HIGH);
delay(1500);
digitalWrite(LED1, LOW);
digitalWrite(LED2, HIGH);
delay(1500);
digitalWrite(LED2, LOW);
digitalWrite(LED3, HIGH);
delay(1500);
digitalWrite(LED3, LOW);
digitalWrite(LED4, HIGH);
delay(1500);
digitalWrite(LED4, LOW);
digitalWrite(LED5, HIGH);
delay(1500);
digitalWrite(LED5, LOW);
}