ECE Lab Kit 5 PWM Motor Speed Control
Plot RPM vs Duty Cycle with Arduino PWM Motor Speed Control ECE Lab 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.
Designed for ECE and physics lab courses, this kit lets you precisely control a DC motor’s speed using Arduino PWM, log RPM with an IR tachometer, and plot the duty cycle versus RPM curve — a perfect experiment to visually verify the linear relationship. Whether you’re completing a B.Tech assignment or a CBSE physics practical, you’ll have all the hardware and guidance to get accurate, repeatable results in one lab session.
What You'll Build
You’ll assemble a working motor speed controller where a potentiometer sets the PWM duty cycle, displayed on a 16x2 LCD. Simultaneously, an IR tachometer measures actual RPM, allowing you to collect data points and plot the RPM vs. duty cycle graph — the same experiment found in engineering curriculum and industrial motor characterization.
What You'll Learn
- Generating and adjusting PWM signals with the Arduino analogWrite function
- Interfacing an L298N motor driver to handle 12V DC motor current safely
- Reading IR tachometer pulses and converting them to RPM
- Plotting experimental data to analyse the motor’s response curve
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| L298N Motor Driver | x1 |
| DC Motor 12V | x1 |
| IR Tachometer Sensor | x1 |
| Potentiometer 10k | x1 |
| 16x2 LCD | x1 |
| I2C Backpack | x1 |
| USB Cable | x1 |
| 12V PSU | x1 |
| M-M Wires | x20 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Ideal for B.Tech ECE/EEE students performing motor control experiments, CBSE Class 12 physics practicals on electromagnetic principles, and participants of Smart India Hackathon or college robotics clubs who need a reliable, pre-tested platform for PWM projects. Also suits ATL Tinkering Labs introducing embedded systems to young makers.
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.
What if I get stuck during the build?
Scan the QR code on the box to access the AI build companion trained on this exact project. It provides real-time debugging via WhatsApp, along with step-by-step guidance and code snippets.
Can I plot the RPM vs duty cycle graph on my laptop?
Yes, the kit includes serial monitor output code to stream data to your laptop via USB; you can use any plotting tool like Excel or Python’s Matplotlib to generate the graph instantly.
Does this kit work with my existing Arduino IDE?
Absolutely — the kit works with the standard Arduino IDE, and we provide example code to control PWM, read the tachometer, and drive the LCD. No extra software licences required.
How accurate is the IR tachometer for RPM measurement?
The IR tachometer detects reflective surface changes and gives RPM readings accurate within ±2% for speeds up to 6000 RPM, perfect for lab verification of the PWM-RPM curve and meeting university experiment standards.
PWM from Arduino controls DC motor speed via L298N — plot RPM vs duty cycle and verify with IR tachometer.
What's in this kit
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items