int red = 13;
int green = 12;
int blue = 11;

void setup() {
pinMode(red,OUTPUT);
pinMode(green,OUTPUT);
pinMode(blue,OUTPUT);
}

void loop() {
kirmizi();
delay(1000);
yesil();
delay(1000);
mavi();
delay(1000);
}
void kirmizi() {
  digitalWrite(red,LOW);
  digitalWrite(blue,HIGH);
  digitalWrite(green,HIGH);
}
void yesil() {
  digitalWrite(red,HIGH);
  digitalWrite(blue,HIGH);
  digitalWrite(green,LOW);
}
void mavi() {
  digitalWrite(red,HIGH);
  digitalWrite(blue,LOW);
  digitalWrite(green,HIGH);
}