Build a Precision Impedance Analyser with Arduino Mega, AD9833 & ADS1115

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Transform your electronics bench with a benchtop-quality impedance analyser you assemble and calibrate yourself. This kit integrates the AD9833 DDS signal generator and ADS1115 16-bit ADC to measure complex impedance over a user-defined frequency sweep, computing real and imaginary components and automatically fitting them to equivalent circuit models. The results—R, L, C, and phase—are plotted on the 2.4-inch TFT, giving you a portable, cable-free measurement tool that rivals expensive commercial LCR meters.

What You'll Build

You'll build a stand-alone impedance analyser capable of characterising passive components across a broad frequency range. The instrument generates a clean sine wave via the AD9833, conditions the signal with LM358 op-amps, and captures voltage and current data through the ADS1115 16-bit ADC. The Arduino Mega performs DFT analysis to extract magnitude and phase, then fits the impedance to series or parallel RLC models, displaying equivalent values on the TFT. The final device runs on a 9V battery, making it easy to use in prototyping or lab sessions.

What You'll Learn

• Generating precise sine waves with a DDS (AD9833) and buffering them for low-distortion measurement.
• Acquiring high-resolution voltage and current data using a 16-bit ADC (ADS1115) and op-amp signal conditioning.
• Implementing complex impedance calculations (magnitude, phase, DFT) and fitting equivalent circuit models in Arduino code.
• Designing a TFT user interface to display sweep results, Bode-style plots, and model parameters.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is built for B.Tech ECE/EEE students tackling final-year or semester projects that require precision component analysis, as well as advanced makers and researchers who want a customisable measurement instrument. It fits perfectly into Smart India Hackathon hardware tracks and serves as a robust platform for lab demonstrations at NITs, IITs, and other engineering colleges. The build assumes prior experience with Arduino and soldering—ideal for 18-21 year olds ready to move beyond simple prototyping.

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.

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.