Smart Room Environment Control

A comprehensive IoT solution for intelligent room environment monitoring and automated control, featuring sensor data collection, edge computing, cloud integration, and real-time notifications.

Real-time monitoring dashboard showing sensor data and actuator controls

🎥 Demo Video

Watch the Full System Demo

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🏗️ System Architecture

The system follows a three-tier architecture:

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   EDGE LAYER    │    │   CLOUD LAYER   │    │   DASHBOARD     │
│                 │    │                 │    │                 │
│ Arduino Sensors │◄──►│ Edge Computing  │◄──►│ ThingsBoard     │
│ Arduino Control │    │ Local Database  │    │ Weather API     │
│                 │    │ MQTT Broker     │    │ Discord Alerts  │
└─────────────────┘    └─────────────────┘    └─────────────────┘

🔧 Hardware Components

Indoor Unit (Inside Arduino)

• Microcontroller: Arduino Uno/Nano
• Display: OLED SSD1306 (128x64)
• Actuators:
  • LED (Pin 3) - Lighting control
  • Fan Motor (Pin 4) - Ventilation
  • Servo Motor (Pin 9) - Door/window automation
• Libraries: U8x8lib, Servo

Outdoor Unit (Outside Arduino)

• Microcontroller: Arduino Uno/Nano
• Sensors:
  • DHT22 (Pin 7) - Temperature and humidity
  • Photoresistor (Pin A0) - Light intensity
  • Sound sensor (Pin 6) - Noise detection
• Indicator: Message LED (Pin 2)
• Libraries: DHT

📦 Software Dependencies

Python Requirements

pip install serial pymysql paho-mqtt requests schedule

Arduino Libraries

• U8x8lib (OLED display)
• Servo (servo motor control)
• DHT (temperature/humidity sensor)

🚀 Installation & Setup

1. Hardware Setup

1. Connect sensors and actuators according to pin definitions in the Arduino code
2. Upload Inside_Arduino.ino to the indoor Arduino
3. Upload Outside_Arduino.ino to the outdoor Arduino
4. Connect both Arduinos to the edge computing device via USB

2. Database Setup

-- Create databases
CREATE DATABASE sensorslog;
CREATE DATABASE actuatorslog;

-- Tables are created automatically by the Python scripts

3. Configuration

Update configuration variables in the Python files:

MQTT Broker

MQTT_BROKER = "your_mqtt_broker_ip"  # Update in all Python files

Discord Webhook (Optional)

DISCORD_WEBHOOK_URL = "your_discord_webhook_url"

Weather API

OPENWEATHER_API_KEY = "your_openweather_api_key"
LOCATION = "your_city,country_code"

ThingsBoard

THINGSBOARD_TOKEN = "your_device_token"

4. Run the System

# Terminal 1 - Outside edge processing
python outside_edge.py

# Terminal 2 - Inside edge processing  
python inside_edge.py

# Terminal 3 - Cloud server
python cloud_server.py

🎯 Features

Automated Environmental Control

• Smart Lighting: LED turns on automatically when ambient light is low
• Ventilation Control: Fan activates when temperature exceeds threshold
• Access Control: Door/window opens based on environmental conditions
• Noise Monitoring: System responds to sound levels for security

Operating Modes

• Automatic Mode: System responds to sensor inputs automatically
• Manual Mode: Remote control via ThingsBoard dashboard
• Threshold Adjustment: Dynamic temperature thresholds based on weather

Data Management

• Real-time Logging: Sensor and actuator data stored in MySQL
• MQTT Communication: Efficient data transmission between components
• Daily Reports: Automated report generation and Discord notifications

Cloud Integration

• Weather Integration: OpenWeatherMap API for weather-based decisions
• ThingsBoard Dashboard: Real-time monitoring and control
• Discord Notifications: Instant alerts for system events

📸 Screenshots

ThingsBoard Dashboard

Real-time sensor monitoring and actuator control interface

Discord Notifications

Automated alerts and daily reports

Hardware Outside Setup

Hardware Inside Setup

Arduino sensors and actuators in operation

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Edge Layer Topics

edge/outside/data     # Sensor data from outdoor unit
edge/outside/status   # Acknowledgment messages
edge/inside/data      # Actuator status from indoor unit

Cloud Layer Topics

cloud/control/mode    # System mode control
cloud/control/led     # LED control
cloud/control/fan     # Fan control  
cloud/control/door    # Door control
cloud/suggestion      # Weather-based suggestions

ThingsBoard Topics

v1/devices/me/telemetry        # Data publishing
v1/devices/me/rpc/request/+    # Remote control commands

🎮 Usage

ThingsBoard Dashboard

1. Access your ThingsBoard instance
2. Monitor real-time sensor data
3. Control actuators remotely
4. View historical data and analytics

Discord Notifications

• Receive alerts for threshold breaches
• Get daily reports
• Monitor system mode changes
• Track actuator state changes

Local Database Queries

-- View recent sensor data
SELECT * FROM sensorslog.logs ORDER BY time DESC LIMIT 10;

-- View actuator activity
SELECT * FROM actuatorslog.logs ORDER BY time DESC LIMIT 10;

🔍 Troubleshooting

Common Issues

Arduino Not Detected

# Check USB connection
ls /dev/ttyACM*
ls /dev/ttyUSB*

# Update serial port in Python files
arduino = serial.Serial('/dev/ttyACM0', 9600, timeout=1)

MQTT Connection Failed

• Verify broker IP address and port
• Check network connectivity
• Ensure MQTT broker is running

Database Connection Error

• Verify MySQL credentials
• Check if databases exist
• Ensure MySQL service is running

Weather API Issues

• Verify API key is valid
• Check location format
• Monitor API rate limits

Debug Mode

Enable debug output by adding print statements or using Python logging:

import logging
logging.basicConfig(level=logging.DEBUG)

📈 System Metrics

Performance Specifications

• Update Interval: 3 seconds for sensor readings
• MQTT Publishing: 10 seconds for telemetry
• Database Logging: Real-time for all events
• Weather Updates: 2 minutes interval
• Report Generation: Daily at 23:59

Sensor Specifications

• Temperature Range: -40°C to 80°C (DHT22)
• Light Range: 0-6000 lux (calculated)
• Sound Detection: Digital threshold-based
• Servo Range: 0° to 90° (door control)