Smart Cylindrical Shared Bookshelf Device

This device is an intelligent cylindrical shared bookshelf device. Detailed description: 1. The bookshelf is divided into five layers, each of which is relatively independent and can be disassembled and assembled. 2. Each layer of the bookshelf has independent compartments, books are placed in the compartments to facilitate classification and numbering. 3. Each layer can hold 19 books, a total of 95 books can be stored. Detailed description: 1. The book retrieval and storage mechanism is composed of a rotation mechanism and a lifting platform. 2. The first stepper motor achieves the overall rotation of the mechanism through a timing belt. 3. The second stepper motor drives the lifting platform to move up and down through a timing belt transmission. It contains stp files, welcome to download!