#define LED_ROT 23
#define LED_BLAU 22

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

void loop() {
  delay(10);
  Serial.println("KA3");
  digitalWrite(LED_BLAU, HIGH);
  delay(500);
  Serial.println("blaue LED an");
  digitalWrite(LED_BLAU, LOW);
  Serial.println("blaue LED aus");
  // rote led:
  digitalWrite(LED_ROT, HIGH);
  delay(500);
  Serial.println("rote LED an");
  digitalWrite(LED_ROT, LOW);
  Serial.println("rote LED aus");
  delay(500);
}