#define pinBtn 10

long delayDebounce = 50;
long ultimaInteracaoDebounce = 0;

bool todosLedsOn = false;

int contador = 2;
void setup() {
  // put your setup code here, to run once:

  for(int i = 2; i <= 7; i++){
    pinMode(i, OUTPUT);
  }
  pinMode(pinBtn, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:

  bool valorBtn = digitalRead(pinBtn);
  
  if(valorBtn){
    if(millis() - ultimaInteracaoDebounce > delayDebounce){

      if(todosLedsOn){

        for(int i = 2; i <=7; i++){
          digitalWrite(i, LOW);
        }
        contador = 2;
        todosLedsOn = false;

      }else{

        digitalWrite(contador, HIGH);
        contador++;

        if(contador >= 8){
          todosLedsOn = true;
        }
      }

    }

    ultimaInteracaoDebounce = millis();
  }

}