Brushless Motor KV Estimator Kit with Arduino Uno + Motor
Build Your Own Brushless Motor KV Estimator with Arduino Uno
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Whether you're preparing for a CBSE Class 12 physics project, a B.Tech ECE mini-project, or exploring how drone motors are tested, this kit puts a professional KV estimation rig in your hands. You'll spin a 2204 brushless motor at different throttle levels, capture RPM with a Hall sensor, and watch the speed curve appear on an OLED—all while learning the real-world meaning of motor constants and PWM control. No prior experience with brushless motors is required—the AI companion walks you through each step, from wiring the Hall sensor to interpreting the KV slope.
What You'll Build
A compact test station that drives a brushless motor via an ESC, reads its rotational speed with an A3144 Hall effect sensor, and instantly graphs RPM against throttle percentage on a 0.96-inch OLED. From that linear relationship, you'll derive the motor's KV rating (RPM per volt) just like an engineer measuring a new motor prototype. The OLED displays throttle percentage on the x-axis and RPM on the y-axis, updating live as you adjust the potentiometer.
What You'll Learn
- Interface a Hall effect sensor with Arduino to count magnet pulses and calculate RPM.
- Generate PWM signals to control an ESC and smoothly vary brushless motor speed.
- Apply the KV formula to estimate motor constant from experimental RPM-voltage data.
- Program an I2C OLED display to plot real-time sensor readings as a throttle-response graph.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| ESC 30A | x1 |
| Brushless Motor 2204 | x1 |
| A3144 Hall Sensor | x1 |
| 0.96in OLED | x1 |
| 3S LiPo 1300mAh | x1 |
| XT60 Connector | x1 |
| 400-pt Breadboard | 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
CBSE Class 11–12 students who need a compelling physics or electronics project for practical exams. B.Tech ECE/EEE first-year students tackling motor control and sensor integration in their labs. ATL Tinkering Lab facilitators looking for an engaging, curriculum-aligned activity. And any hobbyist eager to move beyond datasheets and build a functioning motor test rig.
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 your AI companion, which is trained on this exact project and can troubleshoot wiring, code, and calibration. You can also reach us on WhatsApp for a human backup.
Do I need to solder anything?
No soldering is required—the breadboard and jumper wires make all connections push-fit. The XT60 connector and ESC come with pre-soldered leads for easy plug-and-play.
Can I use this kit to measure KV of other brushless motors?
Yes, the setup works with any 3S-compatible brushless motor that fits the ESC. You can swap in a different motor, adjust the magnet count in the code, and re-run the test to get its KV curve.
Is the LiPo battery included and safe to use?
Yes, a 3S 1300mAh LiPo is included. It arrives at storage voltage and should be balance-charged with a compatible charger before use. We include a safety note on handling LiPo batteries
Hall sensor measures BLDC motor RPM at different throttle settings. OLED plots RPM vs throttle curve.
What's in this kit
Other projects you can build
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