int led=8;
void setup() {
// put your setup code here, to run once:
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
digitalWrite(3, HIGH);
delay(500);
digitalWrite(3, LOW);
delay(500);
digitalWrite(4, HIGH);
delay(500);
digitalWrite(4, LOW);
delay(500);
digitalWrite(5, HIGH);
delay(500);
digitalWrite(5, LOW);
delay(500);
digitalWrite(3, HIGH);
delay(500);
digitalWrite(3, LOW);
delay(500);
digitalWrite(4, HIGH);
delay(500);
digitalWrite(4, LOW);
delay(500);
digitalWrite(5, HIGH);
delay(500);
digitalWrite(5, LOW);
delay(500);
}