const int dlr_pin = A1;


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

void loop() {
  // put your main code here, to run repeatedly:
int ldr_value = analogRead(dlr_pin );
int porcentaje = map(ldr_value, 0 ,1023,100,0);
Serial.print(porcentaje);
Serial.print("%");
Serial.println();
delay(250);
}