int merah=9;
int biru=8;
void setup(){
pinMode(merah,OUTPUT);
pinMode(biru,OUTPUT);
Serial.begin(100);
}
void loop() {
digitalWrite(merah,HIGH);
digitalWrite(biru,HIGH);
delay(1000);
digitalWrite(merah,HIGH);
digitalWrite(biru,LOW);
delay(3000);

digitalWrite(merah,HIGH);
digitalWrite(biru,HIGH);
delay(1000);
digitalWrite(merah,LOW);
digitalWrite(biru,HIGH);
delay(4000);
}