#define LDRPIN 34 
int leda = 4;

void setup() {
  pinMode(leda, OUTPUT);
  pinMode(2, OUTPUT);
  Serial.begin(115200);
  delay(1000);
}

void loop() {
  int val = analogRead(LDRPIN);
  Serial.print("Value: ");
  Serial.println(val);
  
  if (val >= 512) {  
    digitalWrite(2, HIGH);
    digitalWrite(leda, HIGH);
  } else {
    digitalWrite(2, LOW);
    digitalWrite(leda, LOW);
  }
  
  delay(50);
}