// Smart Lamp System with Motion Detection and Security Bell

const int motionPin = 2; // Motion sensor input pin
const int ldrPin = A0;   // LDR (Light Dependent Resistor) analog input pin
const int lampPin = 9;   // Lamp control pin (relay, transistor, or LED)
const int buzzerPin = 10; // Buzzer control pin

void setup() {
  pinMode(motionPin, INPUT);
  pinMode(ldrPin, OUTPUT);
  pinMode(lampPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  int motionValue = digitalRead(motionPin);
  int ldrValue = analogRead(ldrPin);

  // No motion, low light conditions
  if (!motionValue && ldrValue < 300) {
    digitalWrite(lampPin, LOW); // Turn off lamp
    noTone(buzzerPin); // Silence the buzzer
  }
  // Motion detected, low light conditions
  else if (motionValue && ldrValue < 300) {
    digitalWrite(lampPin, HIGH); // Turn on lamp
    tone(buzzerPin, 1000); // Activate buzzer
  }
  // No motion, sufficient light
  else if (!motionValue && ldrValue >= 300) {
    digitalWrite(lampPin, LOW); // Turn off lamp
    noTone(buzzerPin); // Silence the buzzer
  }
  // Motion detected, sufficient light
  else if (motionValue && ldrValue >= 300) {
    digitalWrite(lampPin, HIGH); // Turn on lamp
    tone(buzzerPin, 1000); // Activate buzzer
  }

}