---
name: iot
description: Create IoT architecture diagrams using PlantUML syntax with device and sensor stencil icons. Best for smart home, industrial IoT (IIoT), fleet management, edge computing, and sensor network layouts.
metadata:
  author: IoT diagrams are powered by Markdown Viewer — the best multi-platform Markdown extension (Chrome/Edge/Firefox/VS Code) with diagrams, formulas, and one-click Word export. Learn more at https://docu.md
---

# IoT Architecture Diagram Generator

**Quick Start:** Select device/sensor icons → Place edge gateways → Connect to cloud services → Group into zones → Wrap in ` ```plantuml ` fence.

> ⚠️ **IMPORTANT:** Always use ` ```plantuml ` or ` ```puml ` code fence. NEVER use ` ```text ` — it will NOT render as a diagram.

## Critical Rules

- Every diagram starts with `@startuml` and ends with `@enduml`
- Use `left to right direction` for typical IoT data flows (Device → Edge → Cloud)
- Use `mxgraph.aws4.*` stencil syntax for IoT service and device icons
- Default colors are applied automatically — you do NOT need to specify `fillColor` or `strokeColor`
- Use `rectangle "Zone"  { ... }` or `package "Site" { ... }` for grouping
- Directed flows use `-->`, async/event-driven flows use `..>` (dashed)

**Full stencil reference:** See [stencils/README.md](../uml/stencils/README.md) for 9500+ available icons.

## Mxgraph Stencil Syntax

```
mxgraph.aws4.<icon> "Label" as <alias>
```

### Core IoT Stencils

| Category | Stencils | Purpose |
|----------|----------|---------|
| IoT Platform | `iot_core`, `internet_of_things`, `iot_1click` | Central IoT hub / message broker |
| Edge/Gateway | `greengrass`, `iot_device_gateway`, `freertos`, `iot_expresslink` | Edge computing & device gateway |
| Greengrass | `iot_greengrass_component`, `iot_greengrass_nucleus`, `iot_greengrass_stream_manager` | Edge runtime components |
| Device Mgmt | `iot_device_management`, `iot_device_defender`, `iot_device_tester`, `iot_over_the_air_update` | Fleet provisioning, security, OTA |
| Analytics | `iot_analytics`, `iot_analytics_channel`, `iot_analytics_pipeline`, `iot_analytics_dataset`, `iot_analytics_data_store` | IoT data processing pipeline |
| Events/Rules | `iot_events`, `iot_device_defender_iot_device_jobs` | Event detection & job execution |
| Digital Twin | `iot_twinmaker`, `iot_sitewise`, `iot_sitewise_asset`, `iot_sitewise_asset_model` | Asset modeling & visualization |
| Fleet | `iot_fleetwise`, `iot_device_management_fleet` | Vehicle & device fleet telemetry |

### Device & Sensor Stencils

| Category | Stencils |
|----------|----------|
| Sensors | `sensor`, `iot_thing_temperature_sensor`, `iot_thing_humidity_sensor`, `iot_thing_vibration_sensor`, `iot_thing_temperature_humidity_sensor`, `iot_thing_temperature_vibration_sensor` |
| Actuators | `actuator`, `iot_thing_relay`, `iot_thing_stacklight` |
| Industrial | `factory`, `iot_thing_industrial_pc`, `iot_thing_plc` |
| Smart Home | `thermostat`, `alexa_enabled_device`, `alexa_smart_home_skill`, `camera`, `camera2` |
| Protocols | `mqtt_protocol`, `iot_lorawan_protocol`, `iot_greengrass_protocol` |
| Boats/Vehicles | `iot_sailboat`, `iot_fleetwise` |
| Robotics | `robomaker`, `iot_roborunner` |

### Connection Types

| Syntax | Meaning | Use Case |
|--------|---------|----------|
| `A --> B` | Solid arrow | Sync API / data flow |
| `A ..> B` | Dashed arrow | Async telemetry / MQTT publish |
| `A -- B` | Solid line | Physical / bidirectional link |
| `A --> B : "label"` | Labeled connection | Describe protocol or data |

### Quick Example

```plantuml
@startuml
left to right direction
rectangle "Factory Floor" {
  mxgraph.aws4.sensor "Temp\nSensor" as s1
  mxgraph.aws4.iot_thing_plc "PLC" as plc
}
mxgraph.aws4.greengrass "Greengrass\nEdge" as gg
mxgraph.aws4.iot_core "IoT Core" as core
mxgraph.aws4.iot_analytics "IoT\nAnalytics" as analytics

s1 --> gg : MQTT
plc --> gg
gg --> core
core --> analytics
@enduml
```

## IoT Architecture Types

| Type | Purpose | Key Stencils | Example |
|------|---------|--------------|---------|
| Smart Factory | Industrial IoT monitoring | `sensor`, `iot_thing_plc`, `greengrass`, `iot_sitewise` | [smart-factory.md](examples/smart-factory.md) |
| Smart Home | Home automation | `thermostat`, `alexa_enabled_device`, `camera`, `iot_core` | [smart-home.md](examples/smart-home.md) |
| Fleet Telemetry | Vehicle fleet tracking | `iot_fleetwise`, `iot_core`, `iot_analytics` | [fleet-telemetry.md](examples/fleet-telemetry.md) |
| Edge Computing | Local processing at edge | `greengrass`, `freertos`, `iot_greengrass_component` | [edge-computing.md](examples/edge-computing.md) |
| Digital Twin | Asset modeling & simulation | `iot_twinmaker`, `iot_sitewise_asset_model`, `iot_sitewise` | [digital-twin.md](examples/digital-twin.md) |
| Sensor Network | Distributed sensor mesh | `sensor`, `iot_lorawan_protocol`, `iot_device_gateway` | [sensor-network.md](examples/sensor-network.md) |
| Device Management | Fleet provisioning & OTA | `iot_device_management`, `iot_device_defender`, `iot_over_the_air_update` | [device-management.md](examples/device-management.md) |
| Robotics | Robot fleet orchestration | `robomaker`, `iot_roborunner`, `greengrass` | [robotics.md](examples/robotics.md) |