Automatic Configurable Classroom Timer

Abstract – The Automatic configurable Classroom Timer is an IoT-based system developed to streamline time management within educational institutions by automating the bell-ringing process for class schedules. Traditionally, schools rely on manual bell systems, which are prone to inconsistencies, delays, and human error. This system reduces such issues by leveraging microcontrollers and wireless communication. The primary components include an ESP32 microcontroller with built-in Wi-Fi and Bluetooth, which acts as the master controller, and an Arduino Nano, functioning as the receiver. The system uses a Real-Time Clock (RTC) module to track time, and a buzzer and LCD display to notify users of schedule changes through audio and visual alerts. A mobile app is used for schedule configuration, enabling administrators to modify bell times remotely. Overall, the system offers a reliable, low-cost, and scalable solution for modern smart classrooms. Keywords: ESP32, Arduino nano, Mobile Application, , ESP32, Time Management, Buzzer Notification