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Roadmap

PowerShell/WPF utility for DDC/CI monitor control — brightness, contrast, color temp, input switching, RGB gain, gamma, VCP exploration. Roadmap prioritizes tray mode, hotkeys, and multi-GPU monitoring.

Planned Features

System Tray Mode

  • Persistent tray icon with brightness slider popup (like Twinkle Tray)
  • Per-monitor unison group / link mode
  • Auto-hide main window to tray on minimize
  • Tray-click cycling through saved profiles

Hotkeys & Automation

  • Global hotkey registration (RegisterHotKey WinAPI) — brightness up/down, input switch, profile cycle
  • Per-application profile switching (monitor foreground window exe → apply profile)
  • Scheduled profile switching (sunrise/sunset via SunCalc, or explicit times)
  • Idle-dim on inactivity (GetLastInputInfo polling)

Display Controls

  • Extended VCP set: Gamma (0x72), OSD Language (0xCC), OSD Transparency, Power Indicator LED
  • Dynamic contrast toggle (VCP 0xFC where supported)
  • Picture mode presets (Cinema/Game/Web) via VCP 0xDC
  • Dual-Input PiP/PbP control for ultrawide monitors that support it

GPU Monitoring

  • NVAPI integration for Digital Vibrance (stop being a placeholder)
  • AMD ADL SDK for Radeon temperature/clock/fan
  • Intel Arc / iGPU monitoring via IGCL
  • CPU temperature via LibreHardwareMonitor/OpenHardwareMonitor lib
  • Per-GPU FPS overlay (PresentMon integration)

Laptop Support

  • WMI fallback (WmiMonitorBrightnessMethods) for integrated laptop displays
  • Ambient light sensor polling (ILightSensor) for auto-brightness
  • Battery-aware profile: dim on battery, bright on AC

Data & Profiles

  • Profile JSON schema version + migration on load
  • Export/import profile bundle (all profiles at once)
  • Cloud-sync profiles via OneDrive/Dropbox folder pointer
  • Profile scheduling UI (graphical timeline, not just trigger rules)

Competitive Research

  • Twinkle Tray — tray leader; borrow slider popup UX and time-based automation precision.
  • Monitorian — clean WPF unison-mode implementation; reference for multi-monitor grouping.
  • ClickMonitorDDC (discontinued) — classic feature density; fill that gap.
  • LightBulb (Tyrrrz) — gamma-based color temp with smooth transitions; match the interpolation curve.

Nice-to-Haves

  • MQTT/Home Assistant integration (monitor-as-device with brightness entity)
  • NUC/mini-PC HDMI-CEC remote control compatibility
  • Stream Deck plugin (brightness/input as buttons)
  • Per-monitor wallpaper switcher (stretches existing WPA work)
  • OSD overlay rendered by the app itself (dxgi output duplication) when monitor lacks OSD
  • VCP code crowdsource database (users share supported VCPs by monitor model)

Open-Source Research (Round 2)

Related OSS Projects

Features to Borrow

  • Brightness normalization across heterogeneous panels (twinkle-tray) — a 50% slider produces perceptually equal brightness on all monitors
  • Global hotkey bindings for brightness +/- on specific or all displays (twinkle-tray)
  • Arbitrary VCP code send (e.g. 0xD6 for power mode) instead of hardcoded brightness/contrast only (twinkle-tray --VCP)
  • MCP server interface for AI/agent integration (ddc-ci-control-bridge) — let Claude/Copilot adjust monitors via prompt
  • MQTT Home Assistant integration (ddc-ci-control-bridge) — ties monitor state into smart home scenes
  • Per-monitor adjustable range (monitor X: 20-80%, monitor Y: 0-100%) so the slider maps to each display's usable range (Monitorian)
  • Brightness state cache with disk persistence (musqz/ddc-slider) — restore last-used values on boot before DDC handshake
  • Input-source switching via VCP 0x60 (displayController Go package) — one-click KVM-like monitor input switching

Patterns & Architectures Worth Studying

  • WMI path vs low-level DDC/CI path — Monitorian falls back between them because some docks only expose one; MonitorControl should probe both
  • VCP capabilities string parsing (0xF...) — interrogate monitor for supported codes instead of hardcoding (ddccontrol, Monitorian)
  • Scheduled/ambient brightness automation — sunrise/sunset curves driving VCP 0x10 (display-dj pattern)
  • Tray-only minimal UI vs full control panel — Monitorian ships a tray popup, Twinkle Tray a richer overlay; MonitorControl can do both with a mode switch
  • Cable/dock compatibility warnings — VGA/DVI and some HDMI adapters break DDC, surface a "DDC not detected" banner with docs link (Monitorian compatibility notes)