Real-Time IoT Monitoring Dashboard

My network of IoT sensors already publishes readings over MQTT; now I need those live values to flow straight into a polished dashboard. I want a small, well-structured stack based on Node-RED for message handling, InfluxDB for time-series storage, and Grafana for the visual layer.

Scope
• Configure Node-RED to subscribe to my MQTT topics, parse the payloads, and push cleaned data into InfluxDB with appropriate retention policies.
• Build Grafana panels that refresh in real time, letting me spot anomalies at a glance. The layout should be clear on desktop and tablet.
• Document the setup so I can add new sensor topics later without touching code, ideally by editing a single Node-RED flow and cloning existing Grafana panels.

Acceptance
Data from every connected sensor must appear on Grafana within two seconds of hitting the broker, historical queries should return at least 30 days of readings, and all components need to restart automatically on system reboot. Deliver the Node-RED flow JSON, InfluxDB schema script, Grafana export, and a brief README explaining installation and environment variables.