#include <Servo.h>

const int ldrPin = A0;   // LDR pin connected to analog pin A0
const int ledPin1 = 2;   // First LED connected to digital pin 2
const int ledPin2 = 3;   // Second LED connected to digital pin 3
const int servoPin = 9;  // Servo motor signal pin connected to digital pin 9
const float gama = 0.7;
const float rl10 = 50;
int ldrValue;            // Variable to store the LDR value
Servo servoMotor;        // Create a servo object to control the servo motor

void setup() {
  Serial.begin(9600);
  pinMode(ldrPin, INPUT);   // Set LDR pin as input
  pinMode(ledPin1, OUTPUT); // Set LED pin 1 as output
  pinMode(ledPin2, OUTPUT); // Set LED pin 2 as output
  servoMotor.attach(servoPin); // Attach servo to servoPin
}

void loop() {
  ldrValue = analogRead(ldrPin); // Read the LDR value
  //ldrValue = map(ldrValue, 4095, 0, 1024, 0);
  //Serial.println(ldrValue);
  float voltagem = ldrValue / 1024.*5;
  float resistencia = 2000 * voltagem / (1-voltagem/5);
  float luz = pow(rl10*1e3*pow(10,gama)/resistencia,(1/gama));
  Serial.println(luz);
  
  // Check if the LDR intensity is low
  if (luz < 500) {
    digitalWrite(ledPin1, HIGH); // Turn on LED 1
    digitalWrite(ledPin2, HIGH); // Turn on LED 2
    servoMotor.write(0);         // Set servo motor to 0 degrees
  } else {
    digitalWrite(ledPin1, LOW);  // Turn off LED 1
    digitalWrite(ledPin2, LOW);  // Turn off LED 2
    servoMotor.write(180);       // Set servo motor to 180 degrees
  }
  
  delay(100); // Delay for stability
}