Lyngdorf A/V Control for Home Assistant

Control your Lyngdorf audio/video processor from Home Assistant via RS232 or IP connection.

Status

Implemented and ready for use! This integration supports Lyngdorf MP-50 and MP-60 processors. Hardware testing and feedback welcome.

Features

Media Player Controls

• Full media player control (power, volume, mute, source selection)
• Custom source naming via UI configuration
• Zone 2 support with independent control
• Dynamic source discovery

Audio Processing

• RoomPerfect Controls - Select entities for focus positions and voicings
• Audio Mode Selection - Choose processing modes via select entity
• Channel Trim Controls - Fine-tune bass, treble, center, LFE, surround, and height channels
• Lip Sync Adjustment - Precise delay control in milliseconds
• Loudness Control - Toggle loudness compensation
• DTS Dialog Control (MP-60 only) - Enhance dialog clarity

Real-time State Updates

• Callback-based push notifications from device
• Efficient DataUpdateCoordinator pattern
• Immediate UI updates when device state changes

Information Sensors

• Audio format sensor (codec, sample rate, channels)
• Video input sensor
• Video output sensor

Connection

• RS232 serial and IP/socket connection support
• Config flow UI for easy setup
• Options flow for reconfiguration
• Volume range: -99.9 to +20.0 dB (MP-50) or +24.0 dB (MP-60)

Supported Devices

Model	Status	Volume	Notes
Lyngdorf MP-50	Untested	-99.9 to +20.0 dB	Includes RoomPerfect
Lyngdorf MP-60	Untested	-99.9 to +24.0 dB	Includes RoomPerfect & DTS Dialog Control

Note: All models use similar RS232/IP protocols. If you can test with hardware, please report your results!

Installation

Step 1: Install Custom Components

Make sure that Home Assistant Community Store (HACS) is installed and then add the 'Integration' repository: homeassistant-projects/hass-lyngdorf.

Step 2: Configuration

This integration is completely configured via the Home Assistant UI using config flow:

1. Go to Settings → Devices & Services
2. Click + Add Integration
3. Search for and select Lyngdorf
4. Follow the prompts to configure your device:
   • Select your Lyngdorf model (MP-50 or MP-60)
   • Enter the connection URL (e.g., socket://192.168.1.100:84 for network, or /dev/ttyUSB0 for serial)
   • Optionally set a custom baud rate if using RS232

No configuration.yaml entries are required.

Hardware Requirements

RS232 Connection

• RS232 to USB adapter: Example cable
• Baud rate: 115200 (default)
• Protocol: 8N1 (8 data bits, no parity, 1 stop bit)

IP/Network Connection

• Port: 84 (default)
• Your processor must support network control
• Ensure your processor is connected to your network

Supported Controls

Feature	Entity Type	Main Zone	Zone 2
Power On/Off	media_player	✅	✅
Volume Control	media_player	✅ (dB scale)	✅
Mute	media_player	✅	✅
Source Selection	media_player	✅	✅
RoomPerfect Position	select	✅	-
RoomPerfect Voicing	select	✅	-
Audio Mode	select	✅	-
Bass Trim	number	✅	-
Treble Trim	number	✅	-
Center Trim	number	✅	-
LFE Trim	number	✅	-
Surround Trim	number	✅	-
Height Trim	number	✅	-
Lip Sync Delay	number	✅	-
Audio Format	sensor	✅	-
Video Input	sensor	✅	-
Video Output	sensor	✅	-

Source Inputs

Sources are dynamically discovered from the processor. Common inputs include:

• HDMI (source 1)
• SPDIF 1-8 (sources 3-10): Optical, AES/EBU, and Coaxial digital
• Internal Player (source 11)
• USB (source 12)
• 16-Channel AES (sources 20-23, MP-60 optional module)
• Audio Return Channel (source 24)

Troubleshooting

Connection Issues

• Verify the correct serial port or IP address
• Check that your RS232 cable is properly connected
• Ensure baud rate matches your processor settings (default: 115200)
• For IP connections, verify port 84 is accessible

Integration Not Loading

• Check Home Assistant logs for error messages
• Verify pylyngdorf directory exists in HA root
• Restart Home Assistant after installation

Support

This integration is maintained in my free time. Sponsorship directly funds new device support and faster updates.

• Issues: GitHub Issues
• Community: Home Assistant Community Forum
• Pull Requests: Contributions welcome!

Technical Details

This integration uses an embedded Python library for communication:

pylyngdorf (Lyngdorf Control)

• Lyngdorf RS232/IP protocol implementation
• Async/await support for Home Assistant
• Callback-based state updates - Real-time push notifications from device
• DataUpdateCoordinator - Efficient state management following HA 2025 best practices
• Handles verbosity levels and echo filtering
• RoomPerfect and advanced audio controls
• Model-specific configurations (MP-50/MP-60)
• Custom exception hierarchy for robust error handling
• Dataclass-based state representation for type safety

Architecture

• Protocol Layer - Handles RS232/IP communication and parses unsolicited device updates
• Device API - Clean, typed interface to device controls
• Coordinator - Manages state updates and entity refresh
• Entity Platforms - media_player, select, number, and sensor entities

See Also

• pylyngdorf library - Embedded Python library for Lyngdorf control
• Lyngdorf RS232 Protocol - Command reference
• Example Usage - Python library examples
• fishloa/lyngdorf - Alternative Lyngdorf integration