const int potPin = A0; // Analog input pin for the potentiometer
const int ledPin = 9;  // PWM output pin for the LED

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
        
}

void loop() {
  int potvalue=analogRead(potPin);
  int brightness=map(potvalue,0,1023,0,255);
  analogWrite(ledPin,brightness);
  Serial.print("potentiometer value:");
  Serial.print(potvalue);
  Serial.print("brightness value:");
  Serial.print(brightness);
  delay(1000);
}