Alona IoT — Core

The main backend system of Alona IoT, running on a Raspberry Pi.

This repository contains the Elixir/Phoenix application responsible for:

• ingesting MQTT messages from ESP32 sensor nodes
• buffering and persisting measurements
• tracking device health and connectivity
• exposing APIs and real-time dashboards
• handling alerts and system health monitoring

The system is designed to run unattended for long periods, prioritizing resilience, fault isolation and low operational maintenance.

Responsibilities

• MQTT subscription and message validation
• Device registry and heartbeat tracking
• Buffered storage with backpressure handling
• Real-time UI via Phoenix LiveView
• System health and observability

Non-Goals

• Cloud deployment
• Mobile applications
• Commercial multi-tenant features

Related Repositories

• firmware — ESP32 sensor node firmware
• protocol — MQTT topics and payload schemas
• infra — deployment and operations
• docs — architecture and design documentation