#define LED  (0) 
#define VR (28)
 int value,duty;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, Raspberry Pi Pico!");
  pinMode(LED, OUTPUT);
}

void loop() {
  value = analogRead(VR);
  Serial.print("Value ");
  Serial.println(value);
  duty = (100.0/1023)*value;
  delay(1000);
  Serial.print("Duty = ");
  Serial.println(duty);
  analogWrite(LED, duty);
  delay(1000);
}