#include <LiquidCrystal_I2C.h>

#define LDR_PIN 2

// LDR Characteristics
const float GAMMA = 0.7;
const float RL10 = 50;

LiquidCrystal_I2C lcd(0x27, 20, 4);

int value;
int ledPin = 12;
int threshold = 100;
//int blinkInterval;
const int minValue = 0;
const int maxValue = 100;


void setup() {
  Serial.begin(115200);
  pinMode(A1, INPUT);
  pinMode(LDR_PIN, INPUT);
  pinMode(ledPin, OUTPUT);

  lcd.init();
  lcd.backlight();
}

void loop() {
  int value = analogRead(A1);
  int analogValue = analogRead(A0);
  float voltage = analogValue / 1024. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

  value = analogRead(A1);
  value = map(value, 0, 1023, minValue, maxValue);

  //if (value = minValue, maxValue){
  //blinkInterval = value; // Set the blink interval to the potentiometer value
  analogWrite(ledPin, analogRead(A1)); // Turn the LED on
   // Wait for the blink interval

  //} else {
    //digitalWrite(ledPin, LOW);
  //}
  //if (value = minValue, maxValue) { // Check if the potentiometer value is below the threshold
    //digitalWrite(ledPin, LOW); // Turn the LED off
  //} else {
    //digitalWrite(ledPin, HIGH); // Turn the LED on
  //}

  if (lux < 300) {
   digitalWrite(LED_BUILTIN,HIGH);
  } else {
   digitalWrite(LED_BUILTIN,LOW);
  }
  lcd.setCursor(0, 0);
  lcd.print("Light: ");
  lcd.print(lux);
  lcd.print("lux");

  lcd.setCursor(0, 1);
  lcd.print("Speed Motor: ");
  lcd.print(value);
  lcd.print("%  ");
  
  delay(100);
}