OPC-UA Water Treatment Dashboard

A real-time web dashboard that subscribes to PLC tags through an OPC-UA server, displaying live sensor readings (flow rate, pH, turbidity, chlorine level) and allowing operators to toggle pumps and valves directly from the browser. The front-end auto-updates on tag changes via WebSocket, and every command is logged for traceability. (The live website is a frontend example; for the real app, install the Next.js app from GitHub and connect it to your local OPC-UA server.)