We now support OLED Deej:

full bidirectional websocket support

DeejNG is a modern, extensible audio mixer and controller for Windows, built with WPF (.NET 9), NAudio, and SkiaSharp. It allows real-time control over system and app volumes using physical sliders (e.g. Arduino), complete with VU meters, mute toggles, and persistent target mappings.

This is meant as a companion app to the hardware. Serial/Arduino firmware can be found at https://github.com/omriharel/deej, and the button-capable fork at https://github.com/jimmyeao/ButtonDeej.

• 🎛️ Physical Slider Control via serial (Arduino/COM port) or WebSocket (OledDeej)
• Button Support for toggle or momentary press buttons
• 🎚️ Multiple Channels with per-channel volume and mute
• 🎧 Supports Applications, System Audio, Microphones, and Output Devices
• 🔇 Per-Channel Mute with Visual Feedback
• 📈 Smooth VU Meters with SkiaSharp rendering
• 🔁 Session Auto-Reconnect & Expiration Handling
• 💾 Persistent Settings including targets, input mode, themes, and more
• 🌓 Light/Dark Theme Toggle with multiple theme options
• 🛠️ Start at Boot and Start Minimized options
• 🔊 Control Unmapped Applications
• 🎙️ Input (Microphone) Device Volume Support
• 🧠 Smart Session Caching and optimized session lookup
• 🧰 Extensive Logging and Self-Healing Timers
• 📋 Multiple Profiles for different scenarios (Gaming, Streaming, etc.)
• 🖥️ OledDeej WebSocket Integration with hardware-driven channel picker overlay

• Channels (sliders) are represented by ChannelControl elements.
• Each slider is mapped to one or more targets:
  • System audio
  • Specific applications (by executable name)
  • Current application (by focused window)
  • Input devices (microphones)
  • Output devices (speakers/headphones)
  • Unmapped sessions (everything else)
• Volume data is received via serial (USB COM port) or WebSocket (OledDeej device).
• VU meters are driven by a 25ms dispatcher timer, showing real-time audio levels.
• Targets are assigned via a double-click on a channel, launching a session picker.

1. Connect your physical slider hardware (e.g. Arduino).
2. Launch DeejNG.
3. Select the correct COM port from the dropdown and click Connect.
4. Sliders will auto-generate based on incoming serial data (e.g. 0.5|0.3|...).

OledDeej is a Wi-Fi-enabled hardware device with an OLED display. DeejNG connects to it over WebSocket for two-way communication — volume changes on either end stay in sync.

1. In Settings, switch Connection Mode to WebSocket.
2. Enter the IP address and port of your OledDeej device.
3. Adjust the encoder sensitivity (coarse / medium / fine) and screensaver timeout as desired.
4. Click Connect. DeejNG will push channel config and current volume/mute state to the device on connect.

• Double-click a slider to open the session picker.
• Select from running applications, "System", "Unmapped Applications", microphones, or output devices.
• You can select multiple targets per slider. One slider can control multiple apps or a mic.

When using OledDeej in WebSocket mode, pressing the encoder button on a channel opens a floating channel picker overlay directly on your PC screen. This lets you reassign audio targets from the hardware device itself — no mouse needed.

• Scroll the encoder to browse Apps, Inputs, and Outputs.
• Press the encoder (or mute toggle) to confirm the selection.
• Press BACK to cycle through categories (Apps → Inputs → Outputs).
• The overlay closes automatically on confirm or cancel.

• Click the Mute button on each channel to toggle audio mute.
• The button will turn red when muted.
• In WebSocket mode, mute state is synced bidirectionally with the OledDeej device.

• Use the "Show Sliders" checkbox to toggle VU meters.
• Meters update live with peak-hold animation.

Settings are saved automatically and include:

• Assigned targets per slider
• Connection mode (Serial or WebSocket) and connection parameters
• Input mode per channel
• Theme preference
• Slider inversion
• Smoothing toggle
• Start on boot
• Start minimized
• Overlay timeout and opacity
• OledDeej encoder sensitivity and screensaver timeout

Configure physical buttons for:

• Media Control — Play/Pause, Next, Previous, Stop
• Mute Channel — Toggle mute for a specific channel
• Global Mute — Toggle mute for all channels

Configure multiple profiles for different scenarios (Gaming, Streaming, Work, etc.). Each profile stores a complete snapshot of all channel assignments and settings.

A configurable transparent overlay shows current volume levels when sliders are moved. Adjustable timeout, opacity, text colour, and screen position.