int val;
bool X;
void setup() {
Serial.begin(115200);
pinMode(A0, INPUT);
pinMode(2, OUTPUT);


}

void loop() {
  val=analogRead(A0);  // put your main code here, to run repeatedly:
  Serial.println(val);//
  delay(1);
  
  if(val<=511){
  digitalWrite(2,0);
  
  
  
  }
  if(val>=510){
  digitalWrite(2,1);



}











}