#define LDR_PIN 36
#define LED_PIN 23
int ldr_val;
void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(LDR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  ldr_val = analogRead(LDR_PIN);
  int light_percentage = map(ldr_val, 0,4063,100,0);
  Serial.print("LDR Value : ");
  Serial.print(ldr_val);
  Serial.print(" , ");
  Serial.print("Light percentage : ");
  Serial.print(light_percentage);
  Serial.println("%");
  delay(500);
  if (light_percentage < 50) {
    digitalWrite(LED_PIN, HIGH);
  }
  else {
    digitalWrite(LED_PIN, LOW);
  }
}