#define LDRanalog A0
const float GAMMA = 0.7;
const float RL10 = 50;

void setup() {
  Serial.begin(115200);
  pinMode(2,OUTPUT);

}

void loop() {
  //LDR, pembacaan analog
   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));

  if(lux<=200)
  {
    digitalWrite(2, HIGH);
    Serial.print("Lux           = ");
    Serial.println(lux);
  }
  else
  {
    digitalWrite(2, LOW);
    Serial.print("Lux           = ");
    Serial.println(lux);
  }
  

  }