AC Waveform Quality Analyser Kit with Arduino Mega
Analyse AC Power Quality Like an Engineer with the Arduino Mega 2560 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.
Step into the world of power engineering by building a device that samples 200 data points per AC cycle, computes total harmonic distortion (THD) and crest factor, and live-plots the voltage waveform on a colour TFT display. This is exactly the kind of test gear used to check inverter output quality, generator stability, or mains distortion levels — now in your hands as a intermediate-level project.
What You'll Build
You will assemble a compact, portable analyser that reads AC voltage through an isolated ZMPT101B sensor, processes the signal on an Arduino Mega 2560, and shows the voltage waveform, THD%, and crest factor on a 1.8-inch TFT. The final unit can be powered by a 9V battery, making it easy to carry to a lab bench, school exhibition, or hackathon demo.
What You'll Learn
- Precision AC voltage sampling at 10 kHz using the ZMPT101B module and Arduino Mega’s analogue input
- Implementing a zero-crossing detector and cycle extraction to capture exactly 200 points per waveform period
- Calculating total harmonic distortion (THD) through fast Fourier transform (FFT) approximations and crest factor from peak/RMS ratios
- Driving an ST7735 TFT display to render real-time waveforms, numerical THD, and crest factor values in a clear engineering interface
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| ZMPT101B | 1 |
| 1.8in TFT ST7735 | 1 |
| 10kΩ Resistors | 5 |
| 100nF Capacitors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 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 kit is ideal for CBSE Class 11–12 students preparing investigatory projects on AC circuits and power quality, B.Tech ECE/EEE undergrads building a portable power analyser for lab work, and Smart India Hackathon teams prototyping energy monitoring solutions. ATL Tinkering Labs can use it to demonstrate advanced signal processing, and IIT/NIT/VIT/BITS students can extend it into a full mini-project with IoT logging.
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?
Your kit includes a QR code that unlocks an AI companion trained on this circuit; it can walk you through wiring checks, code uploads, and calibration. If you need human help, just send a photo over WhatsApp — typically answered within an hour.
Can I measure the THD of my home inverter output with this kit?
Absolutely. The ZMPT101B sensor’s galvanic isolation lets you safely connect to low-voltage AC outputs like inverters, UPS units, or small generators. For 230V mains, always use an external step-down transformer and adult supervision.
Is the kit safe for a school student to connect to mains power?
The ZMPT101B provides built-in isolation, but we strongly recommend measuring only low-voltage AC (less than 30V) at first. A 12V AC adapter is a safe way to test waveform quality. Direct mains measurement should be done under a teacher’s guidance using an isolating transformer.
Can I modify the code to send data over WiFi instead of showing on the TFT?
Yes, you can add an ESP8266 module to the Arduino Mega and modify the sketch to transmit THD, crest factor, and waveform snapshots to a cloud dashboard. The AI companion includes a code-adaptation prompt that generates a starting template for WiFi data logging.
ZMPT101B samples 200 points per cycle. Calculates THD and crest factor. Displays waveform on TFT.
What's in this kit
- Arduino Mega 2560
- ZMPT101B
- 1.8in TFT ST7735
- 10kΩ Resistors x5
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
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