#define LED1 D1
#define LED2 D2
#define LED3 D3
#define LED4 D4
#define LED5 D5
#define LED6 D6
#define LED7 D7
#define LED8 D8

int tt = 300;

int led[] = {LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8};
const int numLeds = 8;

void setup() {
  for (int i = 0; i < numLeds; i++) {
    pinMode(led[i], OUTPUT);
  }
}

void leds(bool l1, bool l2, bool l3, int t) {
  digitalWrite(LED1, l1);
  digitalWrite(LED2, l2);
  digitalWrite(LED3, l3);
  delay(t);
}

void loop() {
  // Pisca sequencial de todos os 8 LEDs
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(led[i], HIGH);
    delay(tt);
    digitalWrite(led[i], LOW);
  }

  // Pisca todos juntos
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(led[i], HIGH);
  }
  delay(tt);
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(led[i], LOW);
  }
  delay(tt);
}