Heartbeat

A lightweight IoT sensor digest built with .NET 8 Worker Services, MQTT, and InfluxDB.
Listens to sensor events from ESP32 and Arduino devices, persists readings as time-series data, and exposes them to a Grafana dashboard.

[ESP32 / Arduino] → MQTT → Mosquitto → Heartbeat → InfluxDB → Grafana

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Stack

• Runtime — .NET 8 Worker Service
• Messaging — MQTT via Mosquitto
• Storage — InfluxDB 2.x
• Dashboard — Grafana

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Getting Started

Prerequisites

• .NET 8 SDK
• Docker and Docker Compose

Run

# Start infrastructure
docker compose up -d

# Set InfluxDB token
dotnet user-secrets set "Influx:Token" "your-token-here"

# Run
dotnet run

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Roadmap

• Kafka integration for event streaming and external notifications
• Device health panel (uptime, RSSI, firmware version)
• Alert rules for abnormal readings
• Support for additional sensor types

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License

MIT