Master Motor Speed Control with Arduino Uno: Build a PWM Controller with Potentiometer and LED Bar

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 knob and watching a motor instantly respond—spin faster, slow down, or stop—while a row of LEDs lights up to match the speed. This kit puts you in direct control of motion. You’ll build a complete variable-speed motor controller using real components found in robots and automation, with Arduino Uno as the brain and an L298N driver handling the power. It’s precise, visual, and deeply satisfying to see your code come alive in rotating wheels and glowing LEDs.

What You'll Build

You’ll assemble a breadboard circuit where the potentiometer acts as a throttle. The Arduino reads its position, generates a PWM signal, and commands the L298N to spin the TT gear motor at exactly the speed you set. Five LEDs form a bar graph that scales from off to fully lit as you turn the knob from minimum to maximum speed—an intuitive dashboard for your first motion-control project.

What You'll Learn

• Generate and fine-tune PWM signals using Arduino Uno’s analogWrite function
• Read analog values from a potentiometer and map them to motor speed ranges
• Drive a DC motor safely with an L298N H-bridge, including flyback diode protection
• Create a real-time LED speed indicator by scaling output pins with digital logic

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit fits naturally into CBSE Class 11–12 physics and computer science practicals, B.Tech ECE/EEE introductory labs, ATL Tinkering Labs, and hobbyist workbenches across India. Students from Grade 5 onward can follow the visual LED feedback and gain immediate confidence in controlling real hardware. It’s also a strong foundation for Smart India Hackathon prototypes that need motor control and sensor integration.

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.