// Sensor pins
const int tempPin = A0;       // Analog pin for temperature sensor (LM35)
const int ldrPin = A1;        // Analog pin for light sensor (LDR)
const int pirPin = 2;         // Digital pin for motion sensor (PIR)

// LED pins
const int redLED = 8;
const int greenLED = 9;
const int blueLED = 10;

void setup() {
  pinMode(redLED, OUTPUT);
  pinMode(greenLED, OUTPUT);
  pinMode(blueLED, OUTPUT);
  pinMode(pirPin, INPUT);
  
  Serial.begin(9600);
}

void loop() {
  // Read temperature (LM35 gives 10mV/°C)
  int tempValue = analogRead(tempPin);
  float voltage = tempValue * (5.0 / 1023.0);
  float temperature = voltage * 100;

  // Read light level
  int lightLevel = analogRead(ldrPin);

  // Read motion
  int motionDetected = digitalRead(pirPin);

  // Debug prints
  Serial.print("Temp: ");
  Serial.print(temperature);
  Serial.print(" C, Light: ");
  Serial.print(lightLevel);
  Serial.print(", Motion: ");
  Serial.println(motionDetected);

  // Control LEDs based on readings
  digitalWrite(redLED, temperature > 30 ? HIGH : LOW);       // High temp -> Red LED
  digitalWrite(greenLED, lightLevel > 500 ? HIGH : LOW);     // Bright light -> Green LED
  digitalWrite(blueLED, motionDetected == HIGH ? HIGH : LOW); // Motion -> Blue LED

  delay(1000);
}