void setup() {
  // put your setup code here, to run once:
    //  pinMode(12, INPUT_PULLUP);
    //  pinMode(13, OUTPUT);
     Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int val = analogRead(12);
  Serial.println(val);
  delay(1000);
  // analogWrite();
}