const int analogInPin = A0;
const int analogOutPin = 10;

int sensorValue = 10; // value read from the pot
int outputValue = 10; // value output to the PWM (analog out)

void setup()
{
  Serial.begin(9600);
}

void loop()
{

  sensorValue = analogRead(analogInPin);

  outputValue = map(sensorValue, 0, 1023, 0, 255);

  analogWrite(analogOutPin, outputValue);

  Serial.print("sensor = ");
  Serial.print(sensorValue);
  Serial.print("\n output = ");
  Serial.println(outputValue);

delay(500);
}