---
id: edge-overview
area: edge
level: 1
title: "Edge & Devices"
claim: "Builds and maintains a twenty-node edge fleet — constrained devices · custom radio · solar power · deep sleep · and sensors — reporting into a single automation layer."
confidence: running
period: "2020–"
tech: [ESP32, LoRa, Zigbee, MQTT, Home Assistant, Snapcast, Raspberry Pi]
metrics: [{label: "edge nodes", value: 20}, {label: "lighting zones", value: 9}, {label: "automations", value: 20}]
artefacts: [{type: doc, label: "Edge architecture — power · radio · deep sleep", url: "content/edge/l3/edge-architecture.md"}, {type: doc, label: "The failures, kept in the record", url: "content/edge/l3/edge-failures.md"}, {type: doc, label: "Distributed audio — eight endpoints with ducking", url: "content/edge/l3/edge-snapcast.md"}]
public: true
last_verified: 2026-10-26
tags: [edge, iot, esp32, lora, zigbee]
---

# Edge & Devices

**Claim.** Twenty or more nodes — ten ESP32 devices, two hand-built Zigbee routers and eight Pi audio endpoints — across nine lighting zones and twenty automations, all reporting into one automation layer.

**Status.** Running. Some of it is finished, some is being rebuilt, and at least one thing was destroyed by the animal it was built for. All three states are shown.

**Why it is credible.** These devices are outdoors, on solar, in deep sleep, and they must keep working when nobody is looking. The failures on this page cost real time and are documented as failures.

**Start here.** [The capability page](edge-fleet.md) covers the architecture, the radio, the audio and what broke.