// LDR Sensor, LED, Buzzer, and Relay Control Triger 5 v LED,
// Adjust the threshold value as needed

const int sensorPin = A0; // Motion sensor input pin
const int ledPin = 13;    // LED output pin (built-in LED)
const int buzzerPin = 8;  // Buzzer output pin
const int relayPin = 3;   // Relay control pin

int threshold = 500; // Set your desired LDR threshold value

void setup() {
  pinMode(sensorPin, INPUT); // Set LDR pin as input
  pinMode(ledPin, OUTPUT);   // Set LED pin as output
  pinMode(buzzerPin, OUTPUT);// Set buzzer pin as output
  pinMode(relayPin, OUTPUT); // Set relay pin as output
  Serial.begin(9600);        // Initialize serial communication
}

void loop() {
  int sensorValue = analogRead(sensorPin); // Read LDR value
  Serial.print("LDR Value: ");
  Serial.println(sensorValue); // Print LDR value to serial monitor

  // Check LDR value against threshold
  if (sensorValue > threshold) {
    digitalWrite(ledPin, HIGH); // Turn on LED
    tone(buzzerPin, 1000);      // Activate buzzer
    digitalWrite(relayPin, HIGH);// Turn on relay (activate lamp, for example)
  } else {
    digitalWrite(ledPin, LOW);  // Turn off LED
    noTone(buzzerPin);          // Stop buzzer
    digitalWrite(relayPin, LOW); // Turn off relay (deactivate lamp)
  }

  delay(1000); // Wait for a second
}
// Motion Sensor, LED, Buzzer, and Relay Control,GOOD lUCK ,Eng Odeh Alamrow