Raspberry Pi based Automatic Library Book Management System using Python Flask

The Raspberry Pi based Automatic Library Book Management System operates as an integrated hardware and software platform designed to streamline book issuing and returning processes. At the heart of the hardware setup is a custom-built power supply unit, utilizing a transformer, diodes, a capacitor, a 7805 voltage rectifier, and resistors to step down and regulate AC mains voltage into a stable DC supply for the circuitry. IR sensors detect the physical presence or movement of books, signaling the system when an item is placed in the designated slot. Once triggered, the USB webcam captures an image of the book's barcode. The Raspberry Pi processes this visual feed using OpenCV and the Pyzbar library to decode the barcode information, cross-referencing it with a backend MySQL database managed via Python Flask and PHP scripts. For user feedback, the system incorporates a 3.5-inch Raspberry Pi TFT Display for visual prompts, while a USB sound card and USB speaker drive text-to-speech outputs generated via the gtts library to provide audible confirmations of transaction statuses. LEDs indicate system power and operational states. Furthermore, remote interaction is supported through a mobile interface designed with MIT App Inventor, and a PySimpleGUI setup allows local desktop control, all interconnected securely via jumper wires on custom PCBs housed within a protective enclosure.

Libraries in schools, colleges, and universities seeking contactless, automated operations to minimize germ transfer, enforce social distancing, and track inventory efficiently.