const int LDR = A0;
const int LED = 10;
const int UMBRAL = 50;

void setup() {
pinMode(LED, OUTPUT); 
Serial.begin(9600);
}

void loop() {
int ldr = analogRead(LDR);
float lux = map(ldr, 0, 1023, 0, 1000);

Serial.print("Nivel de luz: ");
Serial.print(lux);
Serial.println(" lux");

if (lux < UMBRAL) {
digitalWrite(LED, HIGH); 
} if (lux > UMBRAL) {
digitalWrite(LED, LOW);  
}
delay(500); 
}