const int POT = 15;
const int LED1 = 23;
const int LED2 = 22;
const int LED3 = 21;
const int LED4 = 19;

void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);


  pinMode(POT, INPUT);

  Serial.begin(115200);

  analogReadResolution(12);

}

void loop() {
 
  int VALOR_POT = analogRead(POT);

  Serial.print("Valor do potenciômetro: ");
  
  Serial.println(VALOR_POT);

  delay(100);

  if (VALOR_POT >= 1 && VALOR_POT <= 4095){
      digitalWrite(LED1, HIGH);
      digitalWrite(LED2, HIGH);
      digitalWrite(LED3, HIGH);
      digitalWrite(LED4, HIGH);
      delay(300);
  }
  
  else {
      digitalWrite(LED1, LOW);
      digitalWrite(LED2, LOW);
      digitalWrite(LED3, LOW);
      digitalWrite(LED4, LOW);
  }

}