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content: six real code exhibits, rendered by the panel (AUD-152)

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Sam Rolfe
2026-10-28 16:00:06 +11:00
parent 2ceb0c147c
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content/edge/edge-fleet.md
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@@ -8,9 +8,9 @@ confidence: running
period: "2020–"
tech: [ESP32, LoRa, Zigbee, MQTT, Home Assistant, Snapcast, Pi, PIR, mmWave]
metrics: [{label: "edge nodes", value: 20}, {label: "lighting zones", value: 9}, {label: "automations", value: 20}, {label: "hand-built Zigbee routers", value: 2}]
artefacts: [{type: doc, label: "Edge architecture — power · radio · deep sleep", url: "content/edge/l3/edge-architecture.md"}, {type: doc, label: "LoRa irrigation under solar power", url: "content/edge/l3/edge-lora-sprinkler.md"}, {type: doc, label: "Hand-built Zigbee routers and lighting", url: "content/edge/l3/edge-zigbee.md"}, {type: doc, label: "Distributed audio — eight endpoints with ducking", url: "content/edge/l3/edge-snapcast.md"}, {type: doc, label: "Front door — vision · voice · and a rebuild", url: "content/edge/l3/edge-front-door.md"}, {type: doc, label: "Sensors and actuation", url: "content/edge/l3/edge-sensors.md"}, {type: doc, label: "The failures, kept in the record", url: "content/edge/l3/edge-failures.md"}]
artefacts: [{type: doc, label: "Edge architecture — power · radio · deep sleep", url: "content/edge/l3/edge-architecture.md"}, {type: doc, label: "LoRa irrigation under solar power", url: "content/edge/l3/edge-lora-sprinkler.md"}, {type: doc, label: "Hand-built Zigbee routers and lighting", url: "content/edge/l3/edge-zigbee.md"}, {type: doc, label: "Distributed audio — eight endpoints with ducking", url: "content/edge/l3/edge-snapcast.md"}, {type: doc, label: "Front door — vision · voice · and a rebuild", url: "content/edge/l3/edge-front-door.md"}, {type: doc, label: "Sensors and actuation", url: "content/edge/l3/edge-sensors.md"}, {type: doc, label: "The failures, kept in the record", url: "content/edge/l3/edge-failures.md"}, {type: repo, label: "Embedded C++ — the Wi-Fi manager interface and implementation", url: "content/assets/code/05-embedded-cpp-interface.hpp"}]
public: true
last_verified: 2026-10-26
last_verified: 2026-10-28
tags: [edge, iot, esp32, lora, zigbee, audio]
---
@@ -30,6 +30,10 @@ tags: [edge, iot, esp32, lora, zigbee, audio]
**Cameras and vision.** The front door takes an image, logs it, has the image described, and speaks the result into the house before deciding what to do next. RFID tags on boxes and on trees resolve to records — inventory with prices for the boxes, care notes for the trees — written by an automation rather than typed by hand.
## Why this exhibit is good code
The header declares the interface and includes only `Arduino.h`, so a caller compiles without pulling the ESP32 Wi-Fi stack into its translation unit. Only the implementation file knows about station mode, polling and millisecond timeouts, and it returns a boolean so the caller decides what a failed join means. The two files are shown together because the point is the split, not either file alone.
## Evidence
| Claim | Evidence | Artefact |