The Bluetooth-Based Smart Doorbell System for Hearing- Impaired Users Muhammed Emin Kutluca1,

Abstract

This study introduces a smart doorbell system that enhances the safety and independence of hearing-impaired
individuals. The system delivers customizable vibration and light-based notifications through a mobile application,
ensuring that users are promptly informed of visitors at their door. In addition to real-time alerts, notifications are
stored in the app for later review, and a backup power supply ensures uninterrupted operation during electricity
outages.
The system was validated through both simulation and real-world testing, confirming stable performance, quick
response times, and reliable wireless communication. Designed to be affordable and energy-efficient, the proposed
solution not only improves daily convenience for hearing-impaired individuals but also offers potential for wider
use in assistive technology applications.