Smart Fire Detection

<h2>Project Overview</h2> <p>Fire and smoke detection system with MQ-2 sensor, flame sensor, and buzzer alarm.</p> <h2>Bill of Materials (BOM)</h2> <ul> <li>Arduino board</li> <li>an MQ-2 smoke/gas sensor</li> <li>a flame sensor</li> <li>and a buzzer for an audible alarm. An LED can be used for visual alert.</li> </ul> <h2>Circuit Diagram & Component Arrangement</h2> <p>Follow the wiring diagram below. Each component connects to specific pins on the microcontroller. Use a breadboard for prototyping and ensure all connections are secure before powering on.</p> <p><strong>Wiring Summary:</strong> The MQ-2 sensor's analog output and the flame sensor's digital output are connected to Arduino input pins. If either sensor detects fire or smoke, the Arduino activates the buzzer and/or LED connected to its output pins.</p> <h2>Step-by-Step Procedure</h2> <ol> <li><strong>Step 1 - Prepare Components:</strong> Gather all components from the BOM. Inspect for damage and verify ratings.</li> <li><strong>Step 2 - Breadboard Layout:</strong> Place the microcontroller on the breadboard. Arrange components for clear wiring paths.</li> <li><strong>Step 3 - Power Connections:</strong> Connect VCC and GND first. Ensure proper polarity for polarized components.</li> <li><strong>Step 4 - Signal Wiring:</strong> Connect sensors and actuators per the wiring table. Double-check pin assignments.</li> <li><strong>Step 5 - Upload Code:</strong> Connect USB, load the sketch, and upload. Verify serial output if applicable.</li> <li><strong>Step 6 - Test & Calibrate:</strong> Power on and test each function. Calibrate sensors if needed.</li> <li><strong>Step 7 - Enclosure (Optional):</strong> Mount in a 3D-printed or custom enclosure for durability.</li> </ol> <h2>Safety Notes</h2> <ul> <li>Always disconnect power before making wiring changes.</li> <li>Use appropriate eye protection when soldering.</li> <li>Adult supervision is required for makers under 16.</li> <li>Do not exceed voltage ratings of components.</li> </ul>