const int sensor = A0;
const int led = 8;

float luminosidade;


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



}

void loop() {
  // put your main code here, to run repeatedly:
luminosidade = map(analogRead(sensor), 1015, 8 ,0 ,100);
Serial.println(luminosidade);
delay(200);

if (luminosidade <40){
digitalWrite(led, HIGH);
}
else{
digitalWrite(led, LOW);
}
}