byte potSignalPin = A0;
byte ledPin = 9;



void setup() {
  // put your setup code here, to run once:

  Serial.begin(9600);

  pinMode(ledPin, OUTPUT);
 


}

void loop() {
  // put your main code here, to run repeatedly:

  int sensorValue = analogRead(potSignalPin);
  int brightness = sensorValue / 4;
  analogWrite(ledPin, brightness);

 

  delay(250);

  sensorValue = map(sensorValue, 500, 0,  0, 500);
  analogWrite(9, sensorValue);

  Serial.print("Pot signal = ");
  Serial.println(sensorValue);


}