void setup() {
  // put your setup code here, to run once:
pinMode(A0, INPUT);
pinMode(13, OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
int Mode=analogRead(A0);
Mode=map(Mode,0,1023,0,1);
Serial.println(Mode);
if (Mode>0) {
  digitalWrite(13, HIGH);
}
else {
  digitalWrite(13, LOW);
}
delay(100);
}