#include "DHT.h"

#define NTC_PIN A0       // Analog pin for NTC sensor
#define DHT_PIN 2        // Digital pin for DHT22 sensor
#define LDR_PIN A1       // Analog pin for LDR sensor
#define TRIG_PIN 9       // Ultrasonic sensor trigger pin
#define ECHO_PIN 10      // Ultrasonic sensor echo pin
#define PIR_PIN 7        // PIR motion sensor input pin

DHT dht(DHT_PIN, DHT22);

void setup() {
  Serial.begin(9600);
  dht.begin();
  pinMode(PIR_PIN, INPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

void loop() {
  // NTC sensor (simulated)
  int ntcValue = analogRead(NTC_PIN);
  float simulatedTemperature = map(ntcValue, 0, 1023, -10, 50); // Simulated temperature range: -10°C to 50°C

  // DHT22 sensor (simulated)
  float simulatedHumidity = random(30, 70) / 10.0; // Simulated humidity range: 30% to 70%

  // LDR light sensor (simulated)
  int ldrValue = analogRead(LDR_PIN);

  // Ultrasonic distance sensor (simulated)
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  unsigned long duration = pulseIn(ECHO_PIN, HIGH);
  float simulatedDistance = duration / 58.2; // Simulated distance calculation (approximate)

  // PIR motion sensor
  int pirState = digitalRead(PIR_PIN);
  bool motionDetected = (pirState == HIGH);

  // Display sensor data
  Serial.print("NTC Temperature: ");
  Serial.print(simulatedTemperature);
  Serial.println(" °C");

  Serial.print("DHT22 Temperature: ");
  Serial.print(dht.readTemperature());
  Serial.println(" °C");
  Serial.print("DHT22 Humidity: ");
  Serial.print(dht.readHumidity());
  Serial.println(" %");

  Serial.print("LDR Value: ");
  Serial.println(ldrValue);

  Serial.print("Ultrasonic Distance: ");
  Serial.print(simulatedDistance);
  Serial.println(" cm");

  if (motionDetected) {
    Serial.println("Motion Detected!");
  }

  delay(2000); // Delay for 2 seconds
}