#define LED1 23 

#define LED2 22 

#define LED3 21 

#define LED4 19  

void setup() { 

  // put your setup code here, to run once: 

  Serial.begin(115200); 

  pinMode(LED1, OUTPUT); 

  pinMode(LED2, OUTPUT); 

  pinMode(LED3, OUTPUT); 

  pinMode(LED4, OUTPUT); 

 

} 

 

void loop() { 

  // put your main code here, to run repeatedly: 

digitalWrite(LED1,HIGH);// acende 

delay(1000); 

digitalWrite(LED1, LOW); //apaga 

delay(1000); 

digitalWrite(LED2,HIGH);// acende 

delay(1000); 

digitalWrite(LED2, LOW); //apaga 

delay(1000); 

digitalWrite(LED3,HIGH);// acende 

delay(1000); 

digitalWrite(LED3, LOW); //apaga 

delay(1000); 

digitalWrite(LED4,HIGH);// acende 

delay(1000);  

digitalWrite(LED4, LOW); //apaga 

 

 

digitalWrite(LED2, LOW); //apaga 

digitalWrite(LED3, LOW); //apaga 

digitalWrite(LED4, LOW); //apaga 

delay(1000); 

}