const int ledPin = 28; // PWM-fähiger Pin

void setup() 
{
  // put your setup code here, to run once:
  Serial1.begin(115200);
  Serial1.println("Hello, Raspberry Pi Pico!");

  pinMode(ledPin, OUTPUT);
}

void loop() 
{

  analogWrite(ledPin, 127); 
  
  delay(1); // this speeds up the simulation
}