void setup() {
  pinMode(14, OUTPUT);
  pinMode(4, INPUT);
  }

void loop() {
  int a = analogRead(4);
  int mapping = map(a,0,4095,0,250);

  analogWrite(14,mapping);

  Serial.println("Value 1 : "+String(a));
  Serial.println("Value 2 : "+String(mapping));

  delay(1000);
}