Speed Control of DC Motor Using Arduino Nano

This project presents a simple and effective method to control the speed of a DC motor using an Arduino Nano. DC motors are widely used in industries, robotics, and household applications where precise speed control is required. The main objective of this project is to design a low-cost and easy-to-implement system for controlling motor speed. In this system, the Arduino Nano acts as the main controller. The speed of the DC motor is controlled using Pulse Width Modulation (PWM) technique. By varying the duty cycle of the PWM signal, the voltage supplied to the motor changes, which in turn controls its speed. A motor driver module is used to interface the motor with the Arduino, ensuring safe and efficient operation. User input can be given through a potentiometer or buttons, allowing real-time adjustment of motor speed. The system is compact, energy-efficient, and easy to program, making it suitable for beginners as well as practical applications. The results show smooth and accurate speed control with minimal hardware requirements. This project demonstrates how micro-controllers like Arduino Nano can be effectively used in automation and control systems.