// Pin connected to the LDR (light sensor)
const int LDR_PIN = A0;
// Pin connected to the relay
const int RELAY_PIN = A1;

void setup() {
  Serial.begin(9600);  // Initialize Serial communication
  pinMode(LDR_PIN, INPUT);  // Set the LDR_PIN as INPUT
  pinMode(RELAY_PIN, OUTPUT);  // Set the relay pin as OUTPUT
}

void loop() {
  int lightIntensity = digitalRead(LDR_PIN);  // Read the output from the LDR

  Serial.print("Light Intensity: ");
  Serial.println(lightIntensity);

  // Control the relay based on the light intensity
  if (lightIntensity == 1) {
    digitalWrite(RELAY_PIN, HIGH);  // Turn on the relay if light intensity is high level
  } else {
    digitalWrite(RELAY_PIN, LOW);   // Turn off the relay if light intensity is low level
  }

  delay(1000);  // Wait for 1 second before measuring the light intensity again
}