int s_value =0;
void setup() {
  // put your setup code here, to run once:
  pinMode(2, OUTPUT);
  pinMode(A0, INPUT);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  s_value = analogRead(A0);
  Serial.println(s_value);
  analogWrite(2,map(s_value,0,1023,0,255));
  delay(1000);
}