int PWM_PIN = 16;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

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

  int valuePWM = 0;
  analogWrite(PWM_PIN,valuePWM);
  delay(300);

  valuePWM = 64;
  analogWrite(PWM_PIN, valuePWM);
  delay(300);
  
  valuePWM = 128;
  analogWrite(PWM_PIN,valuePWM);
  delay(300);

  valuePWM = 193;
  analogWrite(PWM_PIN,valuePWM);
  delay(300);

  valuePWM = 255;
  analogWrite(PWM_PIN,valuePWM);
  delay(300);
}