Bi-Directional DC Motor Speed Controller Project Using Arduino

The DC Motor Speed Controller is an Arduino-based project designed to control the speed and direction of a DC motor using PWM (Pulse Width Modulation). This project helps students understand motor control, interfacing components with Arduino, and working with real-time displays.

Using a potentiometer, the user can adjust motor speed, while push buttons control direction—clockwise, anti-clockwise, or stop. The system includes a 16×2 LCD to display the motor’s speed and current status.

What This Project Does

This project allows you to:
• Start and stop the DC motor
• Run the motor in clockwise or anti-clockwise direction
• Control the speed of the motor using a knob (potentiometer)
• See motor status and speed on a 16×2 LCD display

Main Components Used

• Arduino Uno
• L298N Motor Driver
• DC Motor
• Potentiometer (10k) – to change speed
• Push Buttons – for start, stop, and reverse
• 16×2 LCD – to show speed and direction
• Power Supply – 7.4V battery or similar

How It Works

• Potentiometer sends analog signals to Arduino to control motor speed using PWM (Pulse Width Modulation).
• Push Buttons are used for:
  • Starting motor in clockwise direction
  • Stopping the motor
  • Running motor in anti-clockwise direction
• The L298N Motor Driver receives signals from Arduino to run the motor forward or reverse.
• The LCD Display shows messages like:
  • Welcome message at the start
  • Motor status (Clockwise / Stop / Anti-clockwise)
  • Speed (in percentage using duty cycle)

Working Steps

• Power the circuit.
• Turn the potentiometer knob to adjust motor speed.
• Use the buttons to control direction or stop the motor.
• Watch the changes on the LCD screen in real time.

Project Video

Package Includes

• 1 x DC Motor Speed Controller Project Using Arduino