Automatic Motor Control using Arduino and Relay Logic
DOI:
https://doi.org/10.15662/IJEETR.2026.0802479Keywords:
Automatic Motor Control, Arduino Microcontroller, Relay LogicAbstract
Electric motors serve as the foundational driving element across modern domestic and industrial applications. However, manual operation and mechanical vulnerabilities frequently result in suboptimal efficiency, system overhead, and critical operational failures. This journal presents the robust design and systematic deployment of an automated electric motor control system leveraging an Arduino microcontroller interfaced with intelligent relay logic structures. The architecture provides real-time, autonomous switching control alongside highly adaptive multi-fault protection mechanisms. A suite of integrated sensors continuously gathers real-world operating signals—including ambient temperature data via an LM35 sensor and water level levels via ultrasonic modules. The Arduino micro-processing unit performs real-time edge processing on these inputs and cross-references them against strict safety thresholds. When an anomalous parameter or predefined trigger condition occurs, the system utilizes active low digital switching to operate a electromagnetic relay network. This immediately changes the motor's state, preventing thermal burnout and dry-running conditions. Concurrently, a localized physical buzzer alerts operators, while an integrated LCD screen outputs real-time status diagnostics. The experimental platform can be seamlessly upgraded to an IoT architecture using an ESP32 or Wi-Fi gateway for remote telemetry data transmission. Empirical analysis shows that the proposed prototype reduces manual oversight requirements, maximizes power factor efficiency, and guarantees a fast, fail-safe physical response within 45 milliseconds of fault occurrence. This demonstrates its strong commercial potential for smart industrial automation and modern water distribution frameworks
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