The smart mailbox is an IoT-enabled system that detects when someone approaches and interacts with a household mailbox. Using motion sensing and real-time server communication, it alerts the user whenever motion is detected or the mailbox is opened. This system is designed to improve awareness around deliveries and enhance home security without relying on complex interfaces or third-party apps.
The prototype was built using an ESP32 microcontroller connected to a PIR (passive infrared) sensor to detect nearby human movement and a magnetic reed switch to register when the mailbox is opened. When triggered, the ESP32 sends data to a webserver in real time, allowing the user to be notified through server-side updates. The enclosure was prototyped using card to experiment with component placement, usability, and enclosure layout. The logic and networking functionality were programmed using the Arduino IDE, with a focus on responsiveness, reliability, and simplicity.