Denon Remote

Control Denon Professional DN-500AV surround preamplifier remotely.

Features

Target hardware

• Denon Professional DN-500AV (Seems to be based on the same platform as the Denon AVR-1912 and AVR-2112CI)
• More? Contributions welcome!

Communication

• Ethernet
  • Using Twisted
  • connection status detection
  • automatically try to reconnect with exponential backoff
• RS-232? also using Twisted
• General MIDI input using Mido
  • Define control scheme. See: Summary of MIDI 1.0 Messages , MIDI 1.0 Control Change Messages
    • CC7 = Master Volume
    • CC120 = Mute
    • CC? = On/Standby
    • Program Changes -> Inputs select
      • Mapping?
  • Virtual ports
    • using loopMidi for Windows
    • rt-midi native for *NIX OSes
    • rtpMIDI?

Controls

• Setup
  • IP address
  • Serial port?
    • COM (Windows)
    • tty (*NIX OSes)
• On/Standby
• Main volume
  • Get
    • Relative
    • Absolute
  • Set
    • Relative
    • Absolute
  • Mute
• SPL calibrated display
  • EBU/SMPTE RP200: 85dB C SPL @ -18 dBFS (Equivalent to 83 dB C SPL @ -20 dBFS)
  • K meter
    • K-20: -20dBFS = 83dB C SPL (Same as SMPTE and EBU)
    • K-14: -14dBFS = 83dB C SPL
      • Can be compensated from SMPTE/EBU levels by lowering the output volume by 6dB
    • K-12: -12dBFS = 83dB C SPL
      • Can be compensated from SMPTE/EBU levels by lowering the output volume by 8dB
  • EBU R 128: -23LUFS (-23dBFS) = 73dB C SPL (Debatable/unclear removed for now)
  • Presets!
    • Relative (-18dB, -24dB…)
    • Absolute
    • SPL calibrated
• Zone 2
• Per Channel level (Up to 7.1)
• Tone
• EQ
• Sound presets
• Input select
  • Favorites
• Security
  • Panel Lock
  • IR Remote Lock
• Settings backup/restore
  • All
  • Subsystems?
• Retrieve status
  • Logger
  • Update the GUI
• Import EQ settings
  • From REW value file
    • Only use negative values! You can’t compensate a destructive room mode by adding energy to it.
• Full Profiles/presets?

GUI

• Using Kivy
  • Keyboard shortcuts:
    • M for Mute
    • Up/Down Vol +/-
    • Left/Right VolPreset +/-
    • PgUp/PgDwn SrcPreset +/-
• Systray/Taskbar support using pystray
• Only one instance is allowed (Microsoft Windows only)
• Option to make window stay always on top (Microsoft Windows only)
• Touch doesn't activate the window and doesn't steal focus (Microsoft Windows only)
• Trigger events without having to activate the window first (Microsoft Windows only)
• Draw it on the first touch enabled display if available instead of the main one

Windows executable

• Handle shutdown to power off the device
• Generate icon with IconMaker
• PyInstaller (Fairly stable for Microsoft Windows)
  • UPX support
  • How to build:
    • Review denonremote.spec
    • Use hatch build; hatch run build:pyinstaller
• Nuitka (Alpha support for Microsoft Windows)
  • Use hatch build; hatch run build:nuitka
• PyOxidiser
• cx-Freeze for multiplatform support?
• VST plugin? (Not required if MIDI input is implemented but would be neat to have in the monitoring section of a DAW)
  • See PyVST

Mobile

• Autonomous mobile app? Kivy enables that!
  • Android
  • iOS/iPadOS

Proxy/background service?

The receiver only allows 1 active connection. A dispatcher proxy could allow multiple simultaneous remotes (Desktop and mobile).

Other opportunities

Open ports:

• 23/tcp (TELNET): BridgeCo AG Telnet server
  AVR serial protocol used here
• 80/tcp (HTTP): GoAhead WebServer
  Web control (index.asp) Shows nothing.
  Most of the useful code is commented!
  CSS loading at "css/mainMenu.css" times out.
  Main control is available at "MainZone/index.html"!
• 443/tcp (HTTPS):
  ERR_SSL_PROTOCOL_ERROR in Google Chrome
  SSL_ERROR_EXTRACT_PUBLIC_KEY_FAILURE in Mozilla Firefox
• 1026/tcp (RTSP): Apple AirTunes rtspd 103.2
• 6666/tcp: ?
• 8080/tcp (HTTP): AV receiver http config

Similar projects

Android

• AVR-Remote

JavaScript:

• https://github.com/phillipsnick/denon-avr
• https://github.com/murderbeard/com.moz.denon
• https://github.com/jtangelder/denon-remote

PHP

• https://github.com/Wolbolar/IPSymconDenon (IP Symcon automation)

Python:

• https://github.com/jeroenvds/denonremote (XBMC plugin)
• https://github.com/Tom360V/DenonAvr (Similar objectives?)
• https://github.com/toebsen/python-denonavr (HTTP RESTful server)
• https://github.com/MrJavaWolf/DenonPhoneController (Landline phone controller)
• https://github.com/troykelly/python-denon-avr-serial-over-ip (Library)
• https://github.com/auchter/denonavr_serial (Library)
• https://github.com/jphutchins/pyavreceiver (Nice library)
• https://github.com/frawau/aiomadeavr (Library)
• https://github.com/scarface-4711/denonavr (Uses the HTTP/XML interface. Library)

Legal notice

License

Author: ©2021-2022 Raphaël Doursenaud.

This software is released under the terms of the GNU General Public License, version 3.0 or later (GPL-3.0-or-later).

See LICENSE.

Logo and icons released under the Creative Commons Attribution-Share Alike 4.0 International.

Dependencies & License Acknowledgment

• Python v3.10
  Copyright © 2001-2022 Python Software Foundation.
  Used under the terms of the PSF License Agreement.
• Kivy
  Copyright 2010-2022, The Kivy Authors.
  Used under the terms of the MIT license.
  Uses:
  • docutils
  • pygments
  • sdl2
  • glew
  • pywin32
  • zlib
• Twisted
  Copyright (c) 2001-2022 Twisted Matrix Laboratories.
  Used under the terms of the MIT license.
• PyInstaller
  Copyright (c) 2010-2022, PyInstaller Development Team.
  Copyright (c) 2005-2009, Giovanni Bajo.
  Based on previous work under copyright (c) 2002 McMillan Enterprises, Inc.
  Used under the terms of the GNU General Public License version 2.0.
  • includes cpython

Fonts

• Free Serif
  Copyright © 2022 Free Software Foundation, Inc.
  Used under the terms of the GNU General Public License version 3.0.
• Roboto Mono
  Copyright (c) 2015 The Roboto Mono Project Authors.
  Used under the terms of the Apache License, Version 2.0.
• Unicode Power Symbol
  Copyright (c) 2013 Joe Loughry.
  Used under the terms of the MIT license.

Logo and icons

Own work based upon:

• Denon Professional DN-500AV Front
  Marketing material from Denon Professional.
  Copyright 2012-2022 inMusic Brands, Inc.

Trademarks

• Denon is a trademark of Sound United, LLC and Affiliates.
• Denon Professional is a trademark of inMusic Brands, Inc.

Other

Other trademarks are property of their respective owners and used fairly for descriptive and nominative purposes only.