Wearable Personal Hygiene Reminder

This study presents the development and testing of a Wearable Personal Hygiene Reminder that automates toothbrushing alerts using an embedded system approach. The system integrates an Arduino Nano microcontroller, DS3231 Real-Time Clock (RTC), OLED display, active buzzer, magnetic reed sensor, and a 3.7V LiPo battery to monitor and validate brushing schedules. The RTC provides accurate timing for morning, afternoon, and evening alerts, while the buzzer issues continuous notifications until the brushing task is performed. The magnetic reed sensor ensures brushing meets the required duration and reactivates reminders if stopped prematurely. The system was prototyped and tested in a controlled environment. A total of 10 structured test cases were conducted, evaluating alert timing, brushing validation, buzzer notifications, and display feedback. Results demonstrated reliable alert scheduling, accurate task verification, and continuous feedback, ensuring consistent tooth-brushing behavior. The study’s key contribution is demonstrating an accessible, low-cost, wearable solution for promoting oral hygiene, with potential future enhancements including LCD display integration, wireless notifications, IoT monitoring, and automated brushing tracking for health applications.