const int ldrPin = A0; // Pin connected to the LDR module analog output

void setup() {
  Serial.begin(9600);          // Start the Serial communication
  pinMode(ldrPin, INPUT);      // Initialize the LDR pin as an input
}

void loop() {
  int ldrValue = analogRead(ldrPin); // Read the value from the LDR
  Serial.println(ldrValue);          // Print the value to the Serial Monitor
  delay(500);                        // Wait for half a second
}