//******LDR, pin yg dipakai*********************************************
#define LDRanalog 27
#define LDRdigital 26
#define LED1 18
#define LED2 19

//******LDR, pengukuran lux*********************************************
const float GAMMA = 0.7;
const float RL10 = 50;

void setup() {
  //*****SERIAL MONITOR, setting baud rate***********************
  Serial.begin(115200);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);

}

void loop() {
  //*****LDR, pembacaan analog dan digital***********************
  int nilaiDigital = digitalRead(LDRdigital);
  int nilaiADC = analogRead(LDRanalog);

  //*****LDR, menghitungR V, , LUX (hanya jika menggunakan A0****
  float voltage = nilaiADC * 5 / 4095.0;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));



  //*****SERIAL MONITOR, menampilkan digital, ADC, lux, voltage**
  Serial.print("Nilai Digital = ");
  Serial.println(nilaiDigital);
  Serial.print("Nilai ADC     = ");
  Serial.println(nilaiADC);
  Serial.print("Lux           = ");
  Serial.println(lux);
  Serial.print("Tegangan      = ");
  Serial.println(voltage);

  delay(500);


  if (lux > 500) {
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
  }
  else if (lux < 500) {
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, HIGH);
  }

  else {
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, LOW);
  }
}