int ldr = 35;
int led = 26;
int ldrreading = 0;
int thresh = 800;
int ledbright = 0;
const float GAMMA = 0.7;
const float RL10 = 50;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(ldr, INPUT);
  pinMode(led, OUTPUT);
  Serial.println("Hello, ESP32!");
}

void loop() {
  int analogValue = analogRead(ldr);
  float voltage = analogValue / 1024. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  Serial.println(analogValue);
  delay(500);
  Serial.println(lux);
  delay(1000);
  if(analogValue>200)
  digitalWrite(led, HIGH);
  else
  digitalWrite(led,LOW);
  delay(10); // this speeds up the simulation
}