Maintaining proper tire pressure is essential for ensuring vehicle safety, fuel efficiency, and tire durability. However, manual tire inflation often results in inconsistent pressure and human error. This study aims to design and evaluate an IoT-based automatic tire inflation system. The system integrates a compressor, an MPX5700AP pressure sensor, a solenoid valve, a microcontroller, and a mobile application for real-time monitoring and control. Experimental results show a strong linear relationship between pressure and inflation time, with high consistency and minimal deviation. Although the automatic system requires slightly longer inflation time, it provides better accuracy and reliability. The proposed system offers a practical solution for small workshops and self-service applications
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