Current Harmonic Analyser Kit with Arduino Mega
Current Harmonic Analyser Kit with Arduino Mega — Pinpoint 3rd and 5th Harmonics from Non-Linear Loads
Every part needed to build a working harmonic analyser, pre-tested for signal integrity, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Non-linear loads like SMPS, LED drivers, and motor drives distort the AC mains, injecting harmonic currents that stress transformers and capacitors. With this kit, you’ll sample grid current at 5kHz via ACS712, compute a fixed-point FFT on Arduino Mega, and visualise 3rd and 5th harmonic magnitudes on a colour TFT — quantifying exactly how much distortion your appliances introduce.
What You'll Build
You’ll assemble a complete portable harmonic analyser that reads AC current, timestamps readings with the DS3231 RTC, performs FFT analysis, and displays the harmonic spectrum on a 1.8-inch ST7735 TFT. Data logs to microSD for offline analysis in MATLAB or Python. Plug in any appliance up to 20A and instantly see its harmonic fingerprint.
What You'll Learn
- Sampling current waveforms with ACS712 and 10-bit ADC at a clean 5kHz rate
- Implementing a fixed-point FFT on Arduino Mega to extract 3rd and 5th harmonics
- Interfacing SPI TFT, I2C RTC, and SPI SD card modules simultaneously without bus conflicts
- Interpreting IEEE 519 harmonic limits and assessing power quality of household loads
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| ACS712 20A Current Sensor Module | 1 |
| 1.8 inch TFT ST7735 Display | 1 |
| DS3231 Real-Time Clock Module | 1 |
| MicroSD Card Module | 1 |
| 10kΩ Resistors | 5 |
| 100nF Ceramic Capacitors | 10 |
| PCB Prototype Board | 2 |
| 9V Battery Snap | 1 |
| Soldering Iron | 1 |
| Solder Wire | 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
This advanced kit is tailored for B.Tech ECE/EEE students working on power quality or instrumentation projects, participants of Smart India Hackathon tackling grid monitoring challenges, and final-year students at IIT/NIT/VIT/BITS building a harmonic analyser prototype. Also ideal for ATL Tinkering Lab instructors demonstrating Fourier analysis on real-world signals.
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.
Can I use this kit with a 230V AC mains supply directly?
The ACS712 sensor measures current non-invasively via the breakout board; you'll need to connect a load in series safely. The kit does not include a mains-rated enclosure — all high-voltage wiring should be done under supervision.
What does the AI companion help with?
It provides step-by-step debugging if your FFT output shows noise or if the TFT doesn't initialise — common pitfalls when prototyping with multiple SPI devices on the Mega.
Can I modify the code to display higher harmonics like the 11th?
Yes, the companion includes notes on scaling the FFT bin resolution; with 256 samples you can observe bins up to the Nyquist frequency. Extending to 11th harmonic requires adjusting sampling rate and anti-aliasing.
Is this kit sufficient for a final year IEEE project?
Absolutely — the harmonic analysis with real-time logging and visualisation meets the complexity expected for B.Tech major projects; you can extend with Wi-Fi for remote monitoring as a value addition.
ACS712 samples AC current waveform at 5kHz. FFT reveals 3rd and 5th harmonics from non-linear loads on TFT.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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