Motor Thermal Model Estimator Kit with Arduino Uno + Motor
Estimate Motor Winding Temperature Without a Sensor: Arduino Thermal Model Estimator 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.
Motors run hot under load, but embedding a sensor inside the winding isn’t practical. This kit lets you estimate hidden winding temperature using only current monitoring and a mathematical model — no intrusive sensor. You’ll wire the ACS712 current sensor, feed data into an Arduino Uno, and display real-time thermal estimates on an OLED. It’s the same approach used in industrial motor protection, downsized for a lab bench or school project.
What You'll Build
By the end of this build, you’ll have a working prototype that draws current from a DC motor through an L298N driver, measures that current with a 20A ACS712 module, and calculates winding temperature using a first-order thermal model. The OLED displays live current, ambient temperature from the DS18B20 probe, and estimated winding temperature. You can set a warning threshold or cut-off to protect the motor — a complete predictive maintenance demonstration.
What You'll Learn
- Measure motor current accurately with the ACS712 Hall-effect sensor
- Implement a lumped-parameter thermal model in Arduino code (RC analogy)
- Drive a 12V DC motor through an L298N H-bridge and interpret PWM control
- Integrate an I2C OLED display and a 1-Wire DS18B20 sensor into a single sketch
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| ACS712 20A | 1 |
| DS18B20 Probe | 1 |
| L298N Driver | 1 |
| DC Motor 12V | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 12V Adapter | 1 |
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
Designed for CBSE Class 11–12 students tackling physics or electronics investigatory projects, and first-year B.Tech ECE/EEE entrants who want a hands-on motor control experiment. It aligns well with ATL Tinkering Lab objectives and Smart India Hackathon challenges on condition monitoring. Even hobbyists preparing for IIT/NIT/VIT lab work will find the thermal modelling angle distinctly different from generic motor kits.
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 inside the box to open the AI companion; it knows every step, from wiring the ACS712 to tuning the thermal model constants. For direct human help, you can message us on WhatsApp or email.
Do I still need a temperature sensor on the motor winding?
No — the DS18B20 probe measures ambient temperature, which feeds the thermal model; the winding temperature is estimated purely from current readings. That’s the core concept this kit demonstrates.
Can I adapt this project for a different motor?
Yes. The thermal model constants (Rth, Cth) can be adjusted. The Arduino code is structured so you can recalibrate for any brushed DC motor within the L298N’s current limits.
Is this suitable for my CBSE Class 12 Physics project?
Absolutely. The kit covers current sensing, energy dissipation, and temperature estimation without a direct sensor — a strong investigatory topic that aligns with the CBSE practical syllabus.
ACS712 current monitoring combined with thermal model estimates motor winding temperature without sensor.
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