The latest articles on DEV Community by Iron Bridge (@iron_bridge). https://dev.to/iron_bridge https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3916611%2F411b2e99-d2b7-47f5-936f-f0fbec1a1f0f.jpg https://dev.to/iron_bridge en Iron Bridge Wed, 06 May 2026 19:46:01 +0000 https://dev.to/iron_bridge/how-i-built-a-real-time-ai-weapon-detection-system-with-python-and-opencv-52ib https://dev.to/iron_bridge/how-i-built-a-real-time-ai-weapon-detection-system-with-python-and-opencv-52ib <h2> What I Built </h2> <p>A real-time weapon detection system that identifies <br> firearms through a live camera feed using Python + OpenCV.</p> <h2> Tech Stack </h2> <ul> <li>Python 3.x</li> <li>OpenCV</li> <li>YOLOv5</li> <li>NumPy</li> </ul> <h2> How It Works </h2> <ol> <li>Captures live camera frames</li> <li>Runs each frame through YOLOv5 model</li> <li>Draws bounding boxes around detected weapons</li> <li>Works on any standard webcam</li> </ol> <h2> Results </h2> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F4w0xyjjaxic2dofuosyb.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F4w0xyjjaxic2dofuosyb.png" alt=" " width="800" height="800"></a></p> <h2> Challenges I Faced </h2> <ul> <li>Getting real-time FPS without lag</li> <li>Training the model for accuracy</li> <li>Handling different lighting conditions</li> </ul> <h2> Get The Full Source Code </h2> <p>Complete project available here 👉 ironbridge.gumroad.com</p> ai python machinelearning computervision