//Definição do pino de ligação do led
int led = 4;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
//Definição do led como saída
pinMode(led, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
//Escreve o valoe digital 1 (3,3VDC) no pino 4 (led)
digitalWrite(led, HIGH);
//Espera 1s (1000ms) - Aceso
  delay(1000);
digitalWrite(led, LOW);
//Espera 1s (1000ms) - Apagado
  delay(1000);
}