#include #include #include #include #include #include const char* ssid = "Pavan"; const char* password = "Pavan123"; #define DHTPIN 2 // Pin where the DHT11 is connected #define DHTTYPE DHT11 // DHT11 sensor type DHT dht(DHTPIN, DHTTYPE); LiquidCrystal_I2C lcd(0x27, 16, 2); void sendEmailNotification(bool flameDetected); void sendEmailNotification(float temperature); void sendEmailNotificationVibration(bool vibrationDetected);// Function declaration for sending vibration notification void sendEmailNotificationGas(int gasdetected); const char* emailSubjectGas = "Gas Detected!"; const char* emailBodyGas = "Gas Detected! Dangerous gas levels detected! Take necessary precautions."; const char* emailSenderAccount = "homemoniteringsystem@gmail.com"; const char* emailSenderPassword = "password here"; const char* smtpServer = "smtp.gmail.com"; const int smtpServerPort = 465; const char* emailSubject = "ALERT! High Temperature"; const int VIBRATION_PIN = 5; // Pin connected to the vibration sensor const int gasSensorPin = 35; // Analog pin for MQ2 gas sensor const int threshold = 2500; // Adjust the threshold as needed const int greenLedPin = 4; // Pin for green LED const int redLedPin = 15; // Pin for red LED String pumpStatus; // Initialize pump status String vibrationStatus = "LOW"; // Initialize vibration status int moistureLevel = 0; // Initialize moisture level const int flameDigitalPin = 34; // Replace with the actual digital pin connected to the flame sensor bool flameDetected = false; float thresholdValue = 35.0; const int moisturePin = 32; // Replace with the actual analog pin connected to the moisture sensor const int pumpPin = 12; // Replace with the actual digital pin connected to the water pump int moistureThreshold = 3000; // Adjust this threshold based on your moisture sensor string gasStatus; AsyncWebServer server(80); String html = R"( Home Monitoring System

Comprehensive Home Monitoring System with Environmental Sensing using ESP32

Chaitanya Engineering College

Department of Electronics and Communication Engineering

Under The Guidance Of: Ms. B. Radha Devi, M.Tech

Temperature: %TEMPERATURE% °C

Humidity: %humidity% %

Flame Detected: %FLAME%

Moisture Level: %MOISTURE%

Water Pump: %PUMP%

Earthquake Status: %VIBRATION%

Gas Sensor Status: %GAS%

)"; String processor(const String& var) { if (var == "TEMPERATURE") { // Read the temperature from the DHT sensor float temperature = dht.readTemperature(); // Convert temperature to string with two decimal places return String(temperature, 2); } // Add more variables as needed return String(); } void setup() { Serial.begin(115200); // Connect to Wi-Fi WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); digitalWrite(greenLedPin, LOW); // Ensure green LED is off while connecting digitalWrite(redLedPin, HIGH); // Turn on red LED to indicate no connection delay(500); digitalWrite(redLedPin, LOW); // Turn off red LED Serial.println("Connecting to WiFi..."); } Serial.println("Connected to WiFi"); digitalWrite(greenLedPin, HIGH); Serial.println(WiFi.localIP()); dht.begin(); pinMode(flameDigitalPin, INPUT); pinMode(moisturePin, INPUT); pinMode(pumpPin, OUTPUT); digitalWrite(pumpPin, LOW); pinMode(gasSensorPin, INPUT); pinMode(VIBRATION_PIN, INPUT); // Set the vibration sensor pin as input pinMode(greenLedPin, OUTPUT); pinMode(redLedPin, OUTPUT); server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) { String dynamicHtml = html; dynamicHtml.replace("%TEMPERATURE%", String(dht.readTemperature(), 2).c_str()); dynamicHtml.replace("%humidity%", String(dht.readHumidity()).c_str()); // Update humidity value dynamicHtml.replace("%MOISTURE%", String(moistureLevel).c_str()); dynamicHtml.replace("%GAS%", String(gasStatus.c_str())); dynamicHtml.replace("%FLAME%", flameDetected ? "Yes" : "No"); dynamicHtml.replace("%VIBRATION%", vibrationStatus.c_str()); dynamicHtml.replace("%PUMP%", pumpStatus.c_str()); request->send(200, "text/html", dynamicHtml); }); server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) { // Serve HTML page request->send(200, "text/html", html); }); server.begin(); lcd.begin(); lcd.backlight(); lcd.print("ESP32 Monitoring"); lcd.setCursor(0, 1); lcd.print("System"); delay(2000); lcd.clear(); } void loop() { // checking wifi status if (WiFi.status() != WL_CONNECTED) { // Wi-Fi disconnected, turn on red LED digitalWrite(greenLedPin, LOW); digitalWrite(redLedPin, HIGH); } else { // Wi-Fi connected, turn off red LED digitalWrite(redLedPin, LOW); } // Reading sensor data float temperature = dht.readTemperature(); moistureLevel = analogRead(moisturePin); int gasValue = analogRead(gasSensorPin); // Check if temperature exceeds the threshold value if (temperature > thresholdValue) { // Send email notification sendEmailNotification(temperature); } delay(1000); // Wait for 1 second before reading sensor again flameDetected = digitalRead(flameDigitalPin) == LOW; delay(500); // delay half second to read sensor data if (flameDetected) { sendEmailNotification(flameDetected); } else { Serial.println("No flame detected"); } // Moisture sensor starts moistureLevel = analogRead(moisturePin); if (moistureLevel > moistureThreshold) { // Turn on the water pump digitalWrite(pumpPin, HIGH); pumpStatus = "On"; } else { // Turn off the water pump digitalWrite(pumpPin, LOW); pumpStatus = "Off"; } delay(1000); // Adjust the delay as needed // Vibration sensor starts bool vibrationDetected = digitalRead(VIBRATION_PIN) == HIGH; if (vibrationDetected) { // Send email notification for vibration detected sendEmailNotificationVibration(vibrationDetected); vibrationStatus = "HIGH"; } else { vibrationStatus = "LOW"; } // MQ2 sensor starts Serial.println("Gas sensor value: " + String(gasValue)); int gasDetected = gasValue > threshold; if (gasValue > threshold) { gasStatus="detected"; sendEmailNotificationGas(gasDetected); Serial.println("Email sent!"); delay(5000); // Wait for a minute to avoid sending multiple emails in a short time }else{ gasStatus="not deteceetd"; } // Display flame status lcd.setCursor(0, 0); lcd.print("Temp: "); lcd.print(temperature); lcd.print("c"); // Display temperature lcd.setCursor(0, 1); lcd.print("Hum: "); lcd.print(dht.readHumidity()); lcd.print(" C"); delay(4000); lcd.clear(); // Display humidity lcd.setCursor(0, 0); lcd.print("Flame: "); lcd.print(flameDetected ? "Yes" : "No"); // Display earthquake status lcd.setCursor(0, 1); lcd.print("Earthquake: "); lcd.print(vibrationStatus); delay(4000); lcd.clear(); // Display soil moisture lcd.setCursor(0, 0); lcd.print("Soil data: "); lcd.print(moistureLevel); // Display pump status lcd.setCursor(0, 1); lcd.print("Pump: "); lcd.print(pumpStatus); delay(4000); lcd.clear(); // Display MQ2 value lcd.setCursor(0, 0); lcd.print("Gas data: "); lcd.print(gasValue); // Display pump status lcd.setCursor(0, 1); // lcd.print("ip: "); lcd.print(WiFi.localIP()); delay(4000); lcd.clear(); } void sendEmailNotification(bool flameDetected) { SMTPData smtpData; smtpData.setLogin(smtpServer, smtpServerPort, emailSenderAccount, emailSenderPassword); smtpData.setSender("ESP32_Fire_Alert", emailSenderAccount); smtpData.setPriority("High"); smtpData.setSubject(emailSubject); String emailMessage = "Flame detected, hurry up DIAL: 101 for help"; smtpData.setMessage(emailMessage, true); smtpData.addRecipient("pavankumarmadeti143@gmail.com"); if (!MailClient.sendMail(smtpData)) { Serial.println("Error sending Email, " + MailClient.smtpErrorReason()); } else { Serial.println("Email sent successfully for fire"); } smtpData.empty(); } void sendEmailNotification(float temperature) { SMTPData smtpData; smtpData.setLogin(smtpServer, smtpServerPort, emailSenderAccount, emailSenderPassword); smtpData.setSender("ESP32_Temperature_Alert", emailSenderAccount); smtpData.setPriority("High"); smtpData.setSubject(emailSubject); String emailMessage = "High temperature alert! Current temperature is " + String(temperature) + " °C."; smtpData.setMessage(emailMessage, true); smtpData.addRecipient("pavankumarmadeti143@gmail.com"); if (!MailClient.sendMail(smtpData)) { Serial.println("Error sending Email, " + MailClient.smtpErrorReason()); } else { Serial.println("Email sent successfully for temperature"); } smtpData.empty(); } void sendEmailNotificationVibration(bool vibrationDetected) { SMTPData smtpData; smtpData.setLogin(smtpServer, smtpServerPort, emailSenderAccount, emailSenderPassword); smtpData.setSender("ESP32_Vibration_Alert", emailSenderAccount); smtpData.setPriority("High"); smtpData.setSubject("ALERT! Vibration Detected"); String emailMessage = "Vibration detected! Check the home monitoring system for details."; smtpData.setMessage(emailMessage, true); smtpData.addRecipient("pavankumarmadeti143@gmail.com"); if (!MailClient.sendMail(smtpData)) { Serial.println("Error sending Email, " + MailClient.smtpErrorReason()); } else { Serial.println("Email sent successfully for vibration"); } smtpData.empty(); } void sendEmailNotificationGas(int gasDetected) { SMTPData smtpData; smtpData.setLogin(smtpServer, smtpServerPort, emailSenderAccount, emailSenderPassword); smtpData.setSender("ESP32_GAS_Alert", emailSenderAccount); smtpData.setPriority("High"); smtpData.setSubject("ALERT! GAS Detected"); String emailMessage = "GAS detected! Check the home monitoring system for details."; smtpData.setMessage(emailMessage, true); smtpData.addRecipient("pavankumarmadeti143@gmail.com"); if (!MailClient.sendMail(smtpData)) { Serial.println("Error sending Email, " + MailClient.smtpErrorReason()); } else { Serial.println("Email sent successfully for GAS"); } smtpData.empty(); }