Development and application of a multimode intelligent knob control terminal

With the development of IoT technology, the smart home market is growing, but the communication protocols between the products of various brands are not unified, resulting in a smart ecosystem that is difficult to integrate. Existing smart knob products have problems such as poor compatibility and single function. For this reason, this study develops a multifunctional smart knob control terminal based on ESP32 module, aiming to achieve compatibility and control of multiple smart home devices. The hardware design adopts a modular PCB and integrates components such as brushless motor, magnetic encoder and circular LCD display to compress the volume and reduce the cost. The smart knob is equipped with multiple control modes, and the module of interconnection with computer is optimised to improve the interactive experience. Experimental results show that the terminal has strong compatibility and stable performance, and is suitable for a variety of application scenarios. The smart knob control terminal is innovative and practical, and its modular design and multiple control modes provide a flexible solution for smart home control.