#define LED 3
void setup() {
  // put your setup code here, to run once:
  pinMode(3, OUTPUT);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  int v = analogRead(A0);
  
  Serial.println(v);
  delay(500);
  

  analogWrite(3,v/4);
  delay(500);


}