Arduino Smoke, Humidity & Temperature Alarm Module

Overview

This smoke, humidity, & temperature alarm module is a multi-sensor safety monitor designed for home, workshop, or laboratory spaces. Integrating climate tracking with air quality analysis, the device serves as both an environmental monitor and a localised warning system. Core Functionality: • Climate Tracking: Uses a DHT11 sensor to monitor ambient temperature and relative humidity, displaying the live readings (with percentage outputs) on the built-in 16x2 LCD screen. • Air Quality & Smoke Detection: Outfitted with an active smoke sensor. If smoke or gas levels exceed the safety threshold, the LCD screen displays the alert "Smoke Level is High" and triggers a loud onboard buzzer alarm. • Rechargeable Standalone Power: Equipped with a built-in 5V battery, allowing the device to remain active and monitor surroundings even during localized power outages. Recharges using a standard 5V Android phone charger. • Computer Integration: Supports serial communication, allowing real-time data logs of temperature, humidity, and smoke levels to be viewed on a laptop or computer using the Arduino IDE Serial Monitor. Package Includes: • Fully assembled Smoke, humidity, & Temperature Alarm Module • 20-page comprehensive project report, containing detailed circuit wiring diagrams, component operations, and setup files.

Key features

• Active air quality monitoring for smoke and gas detection
• Dual-function temperature and relative humidity tracking via DHT11
• Audible safety warning system via integrated buzzer alarm
• Warning alert messages displayed on a high-contrast 16x2 LCD screen
• Onboard rechargeable 5V battery for reliable off-grid security monitoring
• Standard 5V charging interface compatible with common smartphone adapters
• Serial transmission support for data logging via Arduino IDE Serial Monitor
• Includes a 20-page project report with complete circuit designs