scanno / nl.hdg.mqtt

MQTT Dispatcher for Athom Homey

MQTT Gateway

With this app you can communicate with Homey using MQTT messages.

Functionality

• Dispatch device state changes for all connected devices.
• Dispatch system info (memory, cpu, etc.) on a regular basis.
• Request info (system, zone, device, capability, etc.).
• Update the state of a device (set capability).

Communication

The gateway allows two ways of communication, by topic & by message.
E.g. These two messages will both dim the tv light to 30%:

1. publish to topic 'homey/light/living/tv/dim/update', with message payload: 0.3
2. publish to topic 'homey/command', with message payload:

{
  "command": "update",
  "device":{
    "name": "tv"
    "class": "light", // optional
    "zone": "living", // optional
    "id": "<your-device-guid>" // optional
  },
  "capability": "dim"
  "value": 0.3
}

MQTT Client

This app uses the MQTT Client (beta) to communicate with a MQTT broker.

MQTT Topic

The following message format is used for communication:
system name/device class/zone/device name/capability/command

Note: system name, zone & device name will be normalized.
E.g. Homey/light/Living room/Light tv/... -> homey/light/living_room/light_tv/...

Messages

Messages with the following commands are dispatched by the Gateway:

• state: Current state value. Dispatched on device state changes or on request command.
• info: JSON Object describing the element(s) in the request (Zone, Device, Capability, etc.).

Commands

The gateway provides the following commands to interact with Homey:

• request: Request current state, a state message will be published.
• update: Update a device state (capability).
• describe: Request a description of a Zone/Device/Capability/etc. Results will be published in a info message.

Device mapping

• Device id's will automatically be resolved from the device id, name or topic (in this order).
• The device name may contain either de original name or the normalized version.

Homey firmware v1.5 and v2

Homey 2.0 users should use the beta version of this app.

Future

• Create the abillity to listen to app flow triggers.
• Trigger flows.
• Settings page for managing the Gateway (on/off, select devices/capabilities, etc.).
• etc.

Change Log

2.0.0

• Initial release for Homey firmware v2 (beta)

1.0.0

• Initial release for Homey firmware v1.5