const int LED_rt = 16;

int PWM;
void setup() {
  // put your setup code here, to run once:
  pinMode(LED_rt, OUTPUT);
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  ledcBegin(LED_rt, 100, 12);
  PWM = 0;
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(100); // this speeds up the simulation
  ledcWrite(LED_rt, PWM);
  PWM += 50;
  if(PWM > 4095) {
    PWM = 0;
    Serial.println("Überlauf, nächster Zyklus");
  }

}