SmartLite

Real-time IoT control platform running in production at Gardens by the Bay, Singapore — about 200 lamp poles managed across the public-facing park, live since 2024 and still under my maintenance. Yumetronics handled the hardware and on-site pole integrations; I built the software side end-to-end: the operator web app, the backend services, the AWS infrastructure, and the deploy pipeline. Three months from kickoff to production, no prior code.

The platform bridges MQTT-driven hardware control with an operator-friendly web dashboard. Pole state, sensor readings, and command acknowledgements flow over MQTT for low-latency control; database changes propagate to connected clients via PostgreSQL LISTEN/NOTIFY for a live multi-user dashboard without polling. Operators see a geographic map of every pole, scheduled automation (time-of-day, sensor-triggered, manual override), motion and ambient-light triggers, failure detection with automatic alerts through PWA push, Telegram, and WhatsApp — plus CSV and Excel exports, charts for incident reporting, role-based access (admin / operator / viewer), TOTP 2FA, and a mobile PWA so on-site staff can act from the field.

The screenshots above cover every operator page.