const int analogInPin = A0;
const int analogOutPin = 6;

int sensorValue = 0;
int outputValue = 0;

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("\t output = ");
Serial.println(outputValue);

delay(2);
}