IoT Device Monitoring Platform

IoT Device Monitoring Platform

This freelance IoT work connected 8+ real-world device categories into operational dashboards: water meters, kWh meters, gas meters, nurse call systems, code blue alerts, emergency/panic buttons, smart locks, vending machines, and PLC data from factories — spanning Modbus, MQTT, BLE, and WebSocket protocols.

Challenge

Each device category spoke a different protocol. Water meters used Modbus RTU, PLCs talked Modbus TCP, BLE devices needed short-range wireless handling, and real-time alerts came through MQTT and WebSocket. Operators needed one unified view without caring about what protocol was underneath.

Solution

I built backend ingestion flows that normalized telemetry across all these protocols into a common data model. MQTT and WebSocket handled real-time events and low-latency updates. Modbus devices were polled and their register data mapped to meaningful readings. BLE devices connected through gateway bridging. Persistent storage kept historical data for reporting and trend analysis.

Every dashboard was designed around what the client actually needed — I analyzed their operational workflow first, then built the dashboards to match, not the other way around.

Impact

Operators who previously switched between separate device tools and logs had one dashboard shaped around the signals they needed most. For healthcare-style alert flows, WebSocket delivery helped urgent events appear without waiting for slower polling cycles. For factory telemetry, PLC connection health became visible in the dashboard so stale data was easier to spot. Each dashboard was designed around the client's operating context, not a generic IoT template.

Related

Have devices across different protocols? See the IoT backend development service, or read the complete guide to IoT backends.