Portable LCR Meter Kit with Arduino Mega
Portable LCR Meter Kit with Arduino Mega – Analyze Inductance, Capacitance & Resistance Up to 40 kHz
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine a single handheld device that can tell you the exact inductance of a salvaged coil, the ESR of a capacitor, or the resistance of a precision shunt — all displayed on a sharp colour screen. This kit lets you build that instrument from the circuit up, using an AD9833 sine sweep generator and dual ADS1115 high‑resolution ADCs to extract phase and magnitude data. Whether you need a reliable bench meter for college labs, a customised analyser for a Smart India Hackathon prototype, or a personal test‑gear piece that outperforms cheap multimeters, this project delivers.
What You'll Build
A fully functional, battery‑powered LCR meter with a ZIF socket for rapid component swapping. The Arduino Mega orchestrates a continuous frequency sweep from 30 Hz to 40 kHz; the ADS1115 ADCs sample voltage and current signals through an LM358‑based analog front end, while the I2C multiplexer manages the multiple sensor channels. Phase and magnitude are computed via a Goertzel‑like algorithm and translated into inductance, capacitance, and resistance values on the 2.4‑inch TFT ILI9341 display. The result is a compact, open‑source instrument that you can calibrate and extend as your skills grow.
What You'll Learn
- Design a precision analog front‑end using op‑amp instrumentation amplifiers for low‑noise signal acquisition
- Configure and synchronise an AD9833 DDS module to generate clean sine sweeps
- Capture simultaneous voltage and current measurements with two ADS1115 ADCs over I2C
- Implement a spectral analysis algorithm on Arduino to compute complex impedance from real‑world signals
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| AD9833 Signal Gen | 1 |
| ADS1115 ADC | 2 |
| TCA9548A I2C Mux | 1 |
| LM358 Op-Amp | 4 |
| 2.4in TFT ILI9341 | 1 |
| ZIF Socket | 1 |
| 100kΩ Resistors | 5 |
| 100nF Caps | 15 |
| PCB Prototype Board | 4 |
| 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
B.Tech ECE and EEE students working on instrumentation‑centric final year projects, participants in the Smart India Hackathon who need a custom impedance probe for their prototype, and advanced hobbyists looking to own a lab‑grade portable LCR meter. The kit assumes familiarity with soldering, Arduino programming, and basic signal theory — ideal for learners at IIT, NIT, VIT, BITS, or similar who want a deep dive into mixed‑signal measurement.
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?
The AI companion walks you through calibration, signal routing, and code upload. For real‑time help, message us on WhatsApp — we respond within hours.
Can this meter measure very small inductors or large electrolytic capacitors?
Yes, the dual ADC setup provides a wide dynamic range. It can resolve nano‑henries in series mode and up to millifarads in parallel mode, limited only by the 40 kHz bandwidth.
What frequency accuracy does the AD9833 provide?
The AD9833 delivers 0.1 Hz resolution from 0 to 12.5 MHz; within our 30 Hz–40 kHz operating range, frequency accuracy is better than 0.01%, sufficient for any passive component characterisation.
Can I modify the firmware to add ESR measurement or a battery monitor?
Absolutely. The Arduino Mega has ample flash and I/O. The open‑source codebase is structured to let you add ESR calculation, D/Q factor, or a low‑battery indicator without affecting core functionality.
AD9833 sine sweep plus ADS1115 phase and magnitude measure L C R of any component to 40kHz. TFT display.
What's in this kit
- Arduino Mega 2560
- AD9833 Signal Gen
- ADS1115 ADC x2
- TCA9548A I2C Mux
- LM358 Op-Amp x4
- 2.4in TFT ILI9341
- ZIF Socket
- 100kΩ Resistors x5
- 100nF Caps x15
- PCB Prototype Board x4
- 9V Battery Snap
- Soldering Iron
- Solder Wire
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.
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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