DISCRETE BASED PWM SPEED REGUALTION OF BLDC MOTOR VIA ARDUINO UNO AND HC-05

Abstract

Brushless DC (BLDC) motors are widely utilized in modern applications due to their high efficiency, superior torque density, and low maintenance requirements enabled by electronic commutation. This paper presents the design and implementation of an embedded system for BLDC motor speed control using pulse-width modulation (PWM) based on an Arduino Uno platform. The proposed system integrates an HC-05 Bluetooth module to facilitate wireless communication between an Android device and the controller. Control commands transmitted via the mobile application are received through a UART interface and processed by the microcontroller to generate appropriate PWM signals. An Electronic Speed Controller (ESC) regulates the motor operation by adjusting the applied voltage. The developed system demonstrates an efficient, flexible, and user-friendly approach for real-time BLDC motor control in various applications.