smart safety helmet 3d model
Create a professional **Smart Safety Helmet 3D CAD model**, designed for an **Engineers Day Hackathon 2026**. Design a modern full-face motorcycle helmet suitable for everyday commuters. The helmet must have a strong aerodynamic outer shell, transparent adjustable visor, impact-absorbing inner EPS liner, removable comfort padding, adjustable chin strap, secure buckle, ventilation openings, and a compact electronics housing integrated into the helmet. ### Smart Safety System Integrate a **two-level non-bypassable safety verification system**: 1. Helmet-wear detection sensor inside the helmet. 2. Chin-strap engagement/buckle sensor. The system should allow the motorcycle starter/ignition circuit to operate only when both conditions are detected as satisfied. ### Electronics Integration Provide dedicated mounting spaces for: * Arduino Nano or compact microcontroller * Helmet-wear sensor * Buckle sensor * Bluetooth module * Rechargeable battery * Voltage regulator * Buzzer/indicato
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