Uni-Directional OPC UA to MQTT JSON Payload Publisher using JavaScript

Overview

Our Uni-Directional OPC UA to MQTT JSON Publisher is a lightweight, flexible JavaScript solution designed to bridge the gap between OPC UA servers and MQTT brokers, enabling efficient industrial IoT (IIoT) data transmission. This tool collects real-time OPC UA data and publishes it as structured JSON payloads to any local or cloud-based MQTT broker, making it ideal for remote monitoring, SCADA systems, and Industry 4.0 applications.

Key Features

✅ Bi-Platform Compatibility – Works with both local and remote OPC UA servers (Windows/Linux machines, PLCs, SCADA systems).
✅ MQTT Broker Support – Connects to any MQTT broker (Mosquitto, HiveMQ, AWS IoT, Azure IoT, EMQX, etc.).
✅ JSON Payload Formatting – Converts OPC UA data into JSON for easy integration with dashboards, databases, and analytics platforms.
✅ Cross-Platform Deployment – Runs on Linux SBCs, Docker containers, Windows PCs, and edge devices.
✅ Lightweight & Efficient – Minimal resource consumption, ideal for edge computing and industrial gateways.
✅ Customizable Subscription – Subscribe to specific OPC UA nodes or bulk data points as needed.
✅ Easy Configuration – Simple JSON-based setup for OPC UA endpoints, MQTT topics, and publishing intervals.

Use Cases

🔹Industrial IoT (IIoT) Data Streaming – Send machine/PLC data to cloud platforms (AWS, Azure, ThingsBoard).
🔹Remote Monitoring & Predictive Maintenance – Publish sensor readings to centralized dashboards.
🔹Legacy System Modernization – Bridge OPC UA enabled devices to MQTT based SCADA/MES systems.
🔹Edge Analytics – Feed real-time data into Node-RED, Grafana, or time-series databases (InfluxDB, TimescaleDB).

Technical Specifications