4. Software & System

SMHUB is powered by a Linux-based operating system with an integrated Node.js runtime and a suite of smart home applications. This software foundation provides both enterprise-grade stability and DIY flexibility.

4.1 Operating System

• Base: Lightweight Linux distribution optimized for embedded controllers.

• Runtime: Node.js preinstalled for native execution of Node.js applications.

• Package Management: Extendable via Linux packages and Python scripts.

• Update System:

  • Secure firmware updates.

  • Individual application updates independent of OS.

4.2 Preinstalled Applications

Zigbee2MQTT (Z2M)

• Preinstalled by default.

• Works with onboard CC26xx or EFR32XX Zigbee radios.

• Publishes device data to MQTT.

• Compatible with Home Assistant, OpenHAB, Node-RED, etc.

• Local dashboard for Zigbee pairing and monitoring.

Matterbridge

• Preinstalled by default.
• Bridges Zigbee/Thread devices into the Matter ecosystem.

• Compatible with Google Home, Apple Home, Amazon Alexa, SmartThings.

Node-RED

• Preinstalled by default.

• Visual, flow-based automation editor.

• Includes libraries for MQTT, Z2M, and Matterbridge.

• Accessible via web browser.

Mosquitto MQTT Broker

• Preinstalled and running by default.

• Provides the MQTT backbone for Zigbee2MQTT, Node-RED, and Matterbridge.

• Allows additional MQTT clients to integrate seamlessly with SMHUB.

4.3 System Services

• Networking

  • Ethernet (default).

  • Wi-Fi 2.4 GHz and 5 GHz (AP and Client modes).

  • Bluetooth 5.0 with BLE.

• VPN Support

  • WireGuard preinstalled.

  • Secure remote access tunnels.

• USB Passthrough

  • Full passthrough of USB dongles to the host stack.

  • USB protection logic for safe host/device switching.

4.4 Built-In Visual System

• Ambilight System

  • Runs continuously by default.

  • Uses 12 × WS2812B RGB LEDs for system visualization, notifications, or ambient effects.

  • User-configurable patterns and colors.

• Service LEDs

  • Indicate power, network status, and radio activity.

4.5 Features in Development

• Buzzer Control

  • System and user notifications.

• Audio Output (3.5 mm jack)

  • System alerts, notifications, and future media playback.

• IR Transmitter & Receiver

  • IR learning and replay for remote-controlled devices.

• Extended LED Controls

  • Custom animations and media sync in Ambilight.

4.6 Developer Options

• Full SSH access.

• Node.js environment ready.

• Support for Python scripting and Linux daemons.

• Exposed GPIO, UART, I²C, and SPI for DIY hardware extensions.