Smart Home App with Matter Gateway API Integration

# Technical Specification — Matter Plugin for Larnitech Integration

## Project Title

Matter Plugin for Larnitech Smart Home System

## Project Description

We need a developer to create a Matter integration plugin for the Larnitech smart home platform.

The plugin must integrate with the existing Larnitech application and communicate through the official Larnitech API:
https://wiki.larnitech.com/API2

The goal of the project is:

1. Expose Larnitech devices to the Matter ecosystem, allowing them to be controlled from Matter-compatible controllers such as:

* Apple Home
* Google Home
* Amazon Alexa
* Home Assistant
* Other Matter-compatible apps

2. Allow Matter devices to be imported/added into the Larnitech ecosystem and controlled from the Larnitech application.

The solution should act as a bridge between Larnitech and Matter networks.

The plugin will run on a Raspberry Pi Compute Module device with Linux Ubuntu installed, therefore the solution should be optimized for stable long-term operation on ARM-based Linux hardware.

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# Main Features

## Larnitech → Matter

Expose existing Larnitech devices as Matter devices.

Supported device types should include:

* On/Off Lights
* Dimmers
* RGB/RGBW Lights
* Thermostats
* Air Conditioners
* Temperature Sensors
* Humidity Sensors
* Motion Sensors
* Leak Sensors
* Switches and relays
* etc...

The plugin should:

* Synchronize device states
* Support attribute updates in real time
* Handle Matter commissioning and pairing
* Support multiple endpoints/devices simultaneously

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## Matter → Larnitech

Allow commissioning and importing Matter devices into Larnitech.

Features:

* Discover Matter devices on the network
* Pair and commission Matter devices
* Create corresponding devices/entities in Larnitech
* Synchronize state and commands between Matter and Larnitech

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# Technical Requirements

## Platform Requirements

The solution must run on:

* Raspberry Pi Compute Module
* Ubuntu Linux (ARM architecture)

The plugin should:

* Work reliably as a background service/daemon
* Automatically restart after reboot
* Support easy deployment and updates
* Have low resource consumption suitable for embedded hardware

Docker support is a plus.

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## API Integration

Use the official Larnitech API:
https://wiki.larnitech.com/API2

The plugin must:

* Authenticate and communicate with Larnitech controllers
* Read/write device states
* Subscribe to updates/events if supported
* Synchronize device metadata and capabilities

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## Matter Support

Use official Matter SDK or compatible libraries:

* connectedhomeip (CHIP SDK)
* Python bindings or C++ implementation

Required:

* Matter advertisement
* Commissioning support
* Standard Matter clusters
* Multi-device support
* Persistent pairing/fabric storage

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# Architecture Requirements

The solution should include:

* Modular architecture
* Device mapping layer (Larnitech ↔ Matter)
* State synchronization engine
* Logging and debugging tools
* Configuration management

Optional:

* REST API
* Web UI for monitoring and configuration
* Docker deployment

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# Preferred Technologies

Preferred:

* Python

Possible alternative:

* C++

Suggested stack:

* Python 3.11+
* FastAPI
* Matter SDK / CHIP
* AsyncIO
* SQLite or lightweight persistence

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# Persistence Requirements

The system must persist:

* Device mappings
* Matter fabrics/pairings
* Device states
* Configuration data

Data should be restored automatically after restart.

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# Deliverables

The developer should provide:

* Full source code
* Git repository or ZIP archive
* README with setup instructions
* API documentation
* Example configuration
* Test scripts
* Deployment instructions for Raspberry Pi / Ubuntu

License:

* MIT or other permissive open-source license

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# Acceptance Criteria

The project will be considered complete when:

* Larnitech devices can be controlled from Matter controllers
* Matter devices can be added into Larnitech
* State synchronization works correctly in both directions
* Pairing and commissioning are stable
* Multiple devices are supported simultaneously
* Persistence works after restart
* The plugin runs stably on Raspberry Pi Compute Module with Ubuntu
* Code is modular and documented

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# Suggested Milestones

## Milestone 1

* Base Matter bridge setup
* Connection to Larnitech API
* Simple On/Off device support

## Milestone 2

* Lighting devices (dimmer/RGB)
* Thermostat and sensors
* State synchronization

## Milestone 3

* Matter device import into Larnitech
* Advanced device support
* Persistence and stability improvements

## Milestone 4

* Documentation
* Testing with Apple Home / Google Home / Alexa
* Final delivery

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# Freelancer Proposal Should Include

* Preferred language (Python/C++)
* Selected Matter SDK/libraries
* Estimated timeline
* Relevant Matter / IoT integration experience
* Experience with Raspberry Pi / Linux embedded systems
* Similar smart-home or gateway projects