Industrial OPC-UA Gateway Kit with Arduino Mega + LED
Build an Industrial OPC-UA Gateway with Arduino Mega and ESP32 for SCADA Integration
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Connect Modbus RTU field devices like temperature sensors and PLCs directly to SCADA systems with a custom gateway that translates industrial protocols in real-time. This kit equips you to prototype an edge-computing node that any MES or historian can discover automatically, making it a serious addition for B.Tech final-year automation projects or Smart India Hackathon Industry 4.0 challenges.
What You'll Build
A DIN-rail mounted industrial gateway that polls Modbus RTU sensor data over RS-485 using an Arduino Mega, then streams structured OPC-UA node values via an ESP32’s WiFi. You’ll have a standalone device your SCADA can browse, with real-time values displayed on an OLED and powered by a stable 5V supply — exactly what Indian industry internship mentors look for.
What You'll Learn
- Master Modbus RTU communication: read holding registers from industrial sensors using MAX485 transceivers.
- Implement an OPC-UA server on ESP32 using open62541, exposing a custom address space for SCADA discovery.
- Translate serial data between two microcontrollers with protocol conversion, handling endianness and timeouts.
- Package a prototype into a DIN-rail enclosure with proper power regulation, noise filtering, and industrial wiring practice.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | x1 |
| ESP32 Dev Board | x1 |
| MAX485 RS485 | x1 |
| 0.96in OLED | x1 |
| LM2596 Buck Converter | x1 |
| 120Ω Resistors | x5 |
| 10kΩ Resistors | x5 |
| 100nF Caps | x10 |
| PCB Prototype Board | x2 |
| DIN Rail Enclosure | x1 |
| 12V Adapter | x1 |
| Soldering Iron | x1 |
| Solder Wire | x1 |
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 suits B.Tech (ECE/EEE) final-year students building industrial automation projects, Smart India Hackathon teams tasked with Industry 4.0 prototypes, and engineering researchers at IITs, NITs, and BITS Pilani who need a ready-to-integrate OPC-UA gateway for lab experiments. Also ideal for ATL Tinkering Labs mentoring advanced students on IIoT with real SCADA tools.
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?
Open the AI build companion from the QR code; it’s trained specifically on this gateway’s wiring and code. You can also reach our support team on WhatsApp for hands-on debugging tips.
Can this gateway connect to any Modbus RTU sensor?
Yes, it reads standard holding registers via RS-485. You can adjust the baud rate, parity, and register addresses in the Arduino sketch to match your sensor.
Does the OPC-UA server support secure connections?
The ESP32 implementation includes basic authentication and encryption using open62541. For enterprise-level security, you can extend the stack with certificates and user access control.
Can I power the gateway from a 24V industrial supply?
The included LM2596 buck converter is set for 12V input. For 24V, you’ll need to replace the adapter or add a 24V-to-12V converter (not included) to avoid overheating.
Arduino Mega reads Modbus RTU sensors and exposes them as OPC-UA nodes via ESP32 for SCADA integration.
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.
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