dht22-webui

A lightweight Flask-based web interface for monitoring DHT22 temperature and humidity sensor data with real-time updates and historical data visualization.

Features

• Real-time temperature and humidity monitoring
• Historical data visualization with interactive charts
• Multiple timeframe views (1h, 24h, 7d, 30d)
• Temperature unit conversion (°C/°F)
• Time format selection (12h/24h)
• MongoDB integration for data storage

Requirements

• Raspberry Pi
• DHT22 temperature and humidity sensor
• Python 3.12+
• MongoDB database

Installation

1. Clone the repository

git clone https://github.com/z1xus/dht22-webui
cd dht22-webui

2. Install dependencies

pip install -r requirements.txt

3. Configure your .env file

MONGO_URI=mongodb+srv://<username>:<password>@<cluster>.mongodb.net/<database>?retryWrites=true&w=majority

MONGO_DB_NAME=humidity_db
MONGO_COLLECTION_NAME=sensor_readings

DATA_COLLECTION_INTERVAL=60

4. Run the server

python main.py

Usage

1. Connect your DHT22 sensor to your Raspberry Pi (default: GPIO4)
2. Start the application
3. Access the web interface at:
   • Local: http://localhost:5000
   • Network: http://<your_pi_ip>:5000

License

This project is licensed under the GPL-3.0 License - see the LICENSE file for details.