The Real-Time Clock (RTC) Based Bell System is an automatic school/college/office bell system that rings at pre-set times without manual operation. Using an RTC module with a microcontroller, the system maintains accurate time and triggers a bell or buzzer at scheduled hours.

This project is highly useful in educational institutions, factories, and offices to automate time management and avoid human error.

Parts Used:

1. Microcontroller (Arduino / PIC / ESP32) – Central control unit
2. RTC Module (DS1307 / DS3231) – Provides accurate real-time clock
3. Relay Module – Switches the bell/buzzer ON and OFF
4. Bell / Buzzer / Siren – Alarm output device
5. Keypad / Buttons – For setting or adjusting bell timings
6. LCD / OLED Display – Shows real-time clock and schedule
7. Power Supply (Adapter/Battery) – Runs the system