#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#include <WiFi.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

const int pirPin = 13; // PIR sensor input pin
const int mq135Pin = 34; // MQ-135 sensor analog output pin

Adafruit_BME280 bme;

void setup() {
  Serial.begin(115200);
  pinMode(pirPin, INPUT);
  pinMode(mq135Pin, INPUT);
  pinMode(2, OUTPUT); // LED output for motion detection
  pinMode(4, OUTPUT);// BUZZER output for gas detection

  // Connect to Wi-Fi
  WiFi.begin("Wokwi-GUEST","",6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  if (!bme.begin(0x76)) {
    Serial.println("Could not find a valid BME280 sensor, check wiring!");
    while (1);
  }
}

void loop() {
  int pirValue = digitalRead(pirPin);
  int mq135Value = analogRead(mq135Pin);
  float temperature = bme.readTemperature();


  Serial.print("PIR Sensor: ");
  Serial.println(pirValue);
  Serial.print("MQ-135 Sensor: ");
  Serial.println(mq135Value);
  Serial.print("Temperature: ");
  Serial.println(temperature);


  // Check PIR sensor for motion
  if (pirValue == HIGH) {
    Serial.println("Motion detected!");
    digitalWrite(2, HIGH); // Turn on an LED or perform another action
  } else {
    digitalWrite(2, LOW);
  }

  // You can add your own logic to check the MQ-135 sensor data and take action based on air quality.
  if (mq135Value ==HIGH) {
    Serial.println("Gas detected");
    digitalWrite(4, HIGH);// Turn on an buzzer or perform another action
}else {
  digitalWrite(4, LOW);
}
  delay(100); // Adjust the delay as needed
}