#define BLYNK_TEMPLATE_ID "TMPL6bG1F4hxQ"
#define BLYNK_TEMPLATE_NAME "Lampu Otomatis"
#define BLYNK_AUTH_TOKEN "W33XxFLXFM3VI5JM7WX6At50bw2UTGHV"

#include <BlynkSimpleEsp32.h>

BlynkTimer timer;
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BLYNK_CONNECTED() { 
  Blynk.syncAll();
}

#define LDR_PIN 32
#define LED_PIN 2

const float GAMMA = 0.7; //slope of the log(R) / log(lux) graph
const float RL10 = 50; //resistance of the LDR at illumination level of 10 lux

void sendDataSensor()
{
  int nilaiADC = analogRead(LDR_PIN);
  
  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.print("Nilai ADC     = ");
  Serial.println(nilaiADC);
  Serial.print("Lux           = ");
  Serial.println(lux);
  Serial.print("Tegangan      = ");
  Serial.println(voltage);
  
  Blynk.virtualWrite(V0, lux);

 if(lux < 200) {
    digitalWrite(LED_PIN, HIGH);
   }
   else if(lux > 200){
    digitalWrite(LED_PIN, LOW);
   }
   delay(2000);
}

void setup() {
  Serial.begin(115200);

  pinMode(LDR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  Blynk.begin(auth, ssid, pass);
 timer.setInterval(1000L, sendDataSensor);
}

void loop() {
  Blynk.run();
  timer.run();
}