Build a PWM DC Motor Speed Controller with LED Bar Indicator – Arduino Uno Kit

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Imagine turning a single knob and watching five LEDs light up one by one as your motor spins faster. This Compoden kit lets you build exactly that—a PWM-based DC motor speed controller where you read an analog potentiometer with an Arduino Uno, drive the motor through an L298N driver, and display the speed on a bright LED bar. No prior experience needed, just a curiosity to make things move.

What You'll Build

You’ll assemble a complete motor speed station on a breadboard. Rotating the 10kΩ potentiometer changes the PWM signal sent by the Arduino, smoothly varying motor RPM. Five green LEDs activate progressively—one at the slowest speed, all five at maximum—giving instant visual feedback. The circuit includes flyback diodes for protection, and everything is powered by a 9V battery, making it portable and safe to experiment with.

What You'll Learn

• Read analog values from a potentiometer and map them to a PWM duty cycle.
• Drive a DC motor with an L298N H-bridge module and understand direction and speed control.
• Create a dynamic LED bar graph that reflects real-time motor speed.
• Use diodes for flyback protection and learn why they’re critical with inductive loads.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for young makers and students aged 10–15 stepping into Arduino and motor control. Perfect for ATL Tinkering Lab projects, CBSE Class 11–12 electronics practicals, or Smart India Hackathon prototypes that need a simple, reliable motion setup. Even B.Tech ECE/EEE freshers will find it a quick, confidence-building first build before tackling complex robotics.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.