Project Hub /Test & Measurement Instrumentation/Oscilloscopes & Logic Analyzers/IndusScope - Smallest IoT Oscilloscope for Wireless Testing

Intermediate

ESP32

₹1,500 – ₹5,000

3 – 6 Hours

Partial Kit

IndusScope - Smallest IoT Oscilloscope for Wireless Testing

Design and build the world's smallest IoT-enabled portable oscilloscope using an IndusBoard Coin to visualize AC andD signals wirelessly on smartphones, laptops, or smart TVs.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
10pcs - 220 ohm 1/4 W Resistor Set Rs. 39.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

This list includes a generic resistor set as a placeholder — it is not matched to the exact value or part number this circuit needs. The correct one is specified on the original source page linked above; check it before buying.

We don't carry yet: Other Dev Board (Indusboard / Maixduino / misc)
Header Pins / Terminals / Connectors
Diodes (1N4007 / 1N4148 / Schottky / Zener)
Capacitors

Browse all components

How It Works

The IndusScope functions as a portable, IoT-enabled measurement tool by leveraging the processing power and wireless capabilities of the IndusBoard Coin, which is powered by an ESP32 or ESP32-S2 microcontroller. Electrical signals are introduced into the circuit via a BNC connector, providing a secure interface for standard oscilloscope probes. To protect the microcontroller's sensitive analog-to-digital converter (ADC) pins from overvoltage conditions, the input stage incorporates a conditioning network built with 10K and 100K resistors and IN4148 diodes configured for signal clamping. A 1uF capacitor is included for filtering and DC decoupling, ensuring cleaner signal acquisition. Two slide switches allow the user to manually control circuit states or input routing. Once the analog signal is properly conditioned and scaled, the microcontroller's internal ADC samples the waveform. The ESP32 then processes these digital samples and transmits the waveform data via its built-in Wi-Fi or IoT protocols, allowing users to view real-time AC and DC signal visualizations wirelessly on external displays such as smartphones, laptops, or smart TVs running the custom IndusScope firmware.

Why Build This

Design and deploy an ultra-compact, IoT-enabled diagnostic tool for real-time wireless waveform visualization during field testing.

Gain practical undergraduate-level experience in front-end signal conditioning, ADC sampling limitations, and wireless data streaming.

Create an affordable, portable oscilloscope alternative ideal for debugging microelectronic circuits in laboratory environments or remote locations.

Real-World Application

Compact electronics troubleshooting, on-site field testing of microelectronics, hobbyist circuit debugging, and educational lab environments where portable test gear is beneficial.

Skills You'll Learn

Analog signal conditioning

ADC sampling and configuration

wireless IoT data transmission

schematic interpretation

circuit protection design

firmware flashing

Safety Precautions

Ensure proper capacitor polarity if using electrolytic capacitors. Be cautious when measuring voltages up to 220V AC and 33V DC to avoid component damage or electric shock.

Technology Tags

IOT

OSCILLOSCOPE

WIRELESS TESTING

ADC

DAC

ESP32-S2

SIGNAL PROCESSING

HARDWARE DESIGN

Frequently Asked Questions

Can I view the oscilloscope output on my smartphone?

Yes, because the IndusBoard Coin features built-in wireless capabilities, it can stream waveform data directly to smartphones, laptops, or smart TVs running the custom firmware.

What protects the microcontroller from high voltages?

The input stage uses a combination of 10K and 100K resistors along with IN4148 diodes to safely condition and clamp incoming voltages before they reach the ESP32 pins.

What software is needed to program the IndusScope?

You will need the Arduino IDE to compile and upload the custom IndusScope firmware onto the IndusBoard Coin.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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