Material handling in industries, warehouses, hospitals, and shopping complexes requires efficient and user-friendly transportation systems. Conventional trolleys require manual effort and lack intelligent control features. T AN IoT BASED o overcome these limitations, an IoT-Based Elec-tric Trolley System with Integrated ON–OFF and Directional Drive Control has been developed. The proposed system uses a Raspberry Pi Pico as the main control unit, integrated with an HC-05 Bluetooth Module for wireless communication. The trolley can be controlled remotely via a smartphone using Bluetooth connectivity. A two-channel relay module and single-channel relay module are used to control motor switching and direction. The motor driver circuit enables for-ward and reverse motion control of the trolley. The system provides efficient ON/OFF switching, directional control, reduced manual effort, and improved operational convenience. It is cost-effective, energy-efficient, and suitable for small-scale industrial and domestic applications.
Jegan et al. (Thu,) studied this question.