> ## Documentation Index > Fetch the complete documentation index at: https://mintlify.com/AcChosen/VR-Stage-Lighting/llms.txt > Use this file to discover all available pages before exploring further. # Moving Lights > Spotlight and washlight fixtures with pan and tilt control Moving lights (movers) are dynamic fixtures with pan and tilt capabilities, allowing for precise beam positioning and movement. VRSL provides two types of moving lights: Spotlights and Washlights. ## Fixture Types ### Spotlight Focused beam fixture with gobo projection support. **Prefabs:** * DMX Horizontal: `VRSL-DMX-Mover-Spotlight-H-13CH.prefab` * DMX Vertical: `VRSL-DMX-Mover-Spotlight-V-13CH.prefab` * DMX Legacy: `VRSL-DMX-Mover-Spotlight-L-13CH.prefab` * AudioLink: `VRSL-AudioLink-Mover-Spotlight.prefab` **Features:** * Sharp, focused beam output * 8 gobo/projection selections * Volumetric cone rendering * Projection surface rendering * Fixture mesh visualization ### Washlight Wide-beam fixture for area coverage. **Prefabs:** * DMX Horizontal: `VRSL-DMX-Mover-WashLight-H-13CH.prefab` * DMX Vertical: `VRSL-DMX-Mover-WashLight-V-13CH.prefab` * DMX Legacy: `VRSL-DMX-Mover-WashLight-L-13CH.prefab` * AudioLink: `VRSL-AudioLink-Mover-Washlight.prefab` **Features:** * Wide, soft beam output * No gobo projections * Adjustable beam width * Area coverage optimized ## DMX Channel Layout (13 Channels) Both spotlight and washlight fixtures use the standard 13-channel DMX layout: | Channel | Function | Range | Description | | ------- | ------------- | ----- | --------------------------------- | | 1 | Pan (Coarse) | 0-255 | Horizontal rotation (0-360°) | | 2 | Pan (Fine) | 0-255 | Fine pan adjustment | | 3 | Tilt (Coarse) | 0-255 | Vertical rotation (0-360°) | | 4 | Tilt (Fine) | 0-255 | Fine tilt adjustment | | 5 | Red | 0-255 | Red color intensity | | 6 | Green | 0-255 | Green color intensity | | 7 | Blue | 0-255 | Blue color intensity | | 8 | Intensity | 0-255 | Master dimmer | | 9 | Strobe | 0-255 | Strobe rate (0=off, 1-255=speed) | | 10 | Gobo | 0-255 | Gobo selection (Spotlight only) | | 11 | Gobo Spin | 0-255 | Gobo rotation speed and direction | | 12 | Reserved | 0-255 | Future use | | 13 | Reserved | 0-255 | Future use | ### Pan/Tilt Behavior **Channels 1-2 (Pan):** * Controls horizontal rotation * Coarse channel provides main positioning * Fine channel provides 16-bit precision * Default range: 0° to 360° * Configurable via `maxMinPan` property **Channels 3-4 (Tilt):** * Controls vertical rotation * Coarse channel provides main positioning * Fine channel provides 16-bit precision * Default range: -180° to 180° * Configurable via `maxMinTilt` property ### Color Mixing (Channels 5-7) RGB color mixing with HDR support: * Full 8-bit resolution per channel * Hardware-accelerated color calculation * Color multiplier support for brightness boost * Respects global color tint setting ### Gobo Selection (Channel 10 - Spotlight Only) Spotlights support 8 gobo/projection selections: | DMX Value | Gobo | Description | | --------- | ---- | ------------ | | 0-31 | 1 | Open/No gobo | | 32-63 | 2 | Gobo 2 | | 64-95 | 3 | Gobo 3 | | 96-127 | 4 | Gobo 4 | | 128-159 | 5 | Gobo 5 | | 160-191 | 6 | Gobo 6 | | 192-223 | 7 | Gobo 7 | | 224-255 | 8 | Gobo 8 | Gobo textures can be customized by replacing the projection textures in the material. ### Gobo Spin (Channel 11) Controls gobo rotation: * 0-127: Counterclockwise rotation (slow to fast) * 128: Stop * 129-255: Clockwise rotation (slow to fast) ## Inspector Properties ### DMX Settings ```csharp theme={null} enableDMXChannels // Enable/disable DMX control dmxChannel // Starting DMX channel (1-512) dmxUniverse // DMX universe (1-9) nineUniverseMode // Extended universe mode useLegacySectorMode // Legacy sector addressing ``` ### Movement Settings ```csharp theme={null} invertPan // Invert pan direction invertTilt // Invert tilt direction isUpsideDown // Fixture mounting orientation panOffsetBlueGreen // Pan offset in degrees (0-360) tiltOffsetBlue // Tilt offset in degrees (0-360) maxMinPan // Maximum pan range (+/- degrees) maxMinTilt // Maximum tilt range (+/- degrees) ``` ### Fixture Settings ```csharp theme={null} enableAutoSpin // Enable gobo auto-spin enableStrobe // Enable strobe effects selectGOBO // Manual gobo selection (1-8) coneWidth // Beam width (0-5.5) coneLength // Beam length (0.5-10) maxConeLength // Volumetric mesh length (0.275-10) ``` ### Intensity Settings ```csharp theme={null} globalIntensity // Master brightness (0-1) finalIntensity // Maximum brightness limit (0-1) finalIntensityComponentMode // Enable per-component control finalIntensityVolumetric // Volumetric brightness (0-1) finalIntensityProjection // Projection brightness (0-1) finalIntensityFixture // Fixture mesh brightness (0-1) ``` ### Color Settings ```csharp theme={null} lightColorTint // HDR color tint (default: white) ``` ## Configuration Examples ### Basic DMX Setup 1. Place mover prefab in scene 2. Configure DMX settings: * DMX Channel: 1 * DMX Universe: 1 * Enable DMX Channels: ✓ 3. Adjust cone settings: * Cone Width: 2.5 * Cone Length: 8.5 * Max Cone Length: 1.0 4. Add VRSL DMX Grid Reader to scene ### Inverted/Upside Down Mounting For fixtures mounted upside down: ```csharp theme={null} isUpsideDown = true invertPan = true // May need adjustment invertTilt = true // May need adjustment tiltOffsetBlue = 270 // Compensate for mounting ``` ### Limited Range Movement Restrict pan/tilt range: ```csharp theme={null} maxMinPan = 90 // +/- 90° pan range (180° total) maxMinTilt = 45 // +/- 45° tilt range (90° total) ``` ### Performance Optimization For better performance with many fixtures: ```csharp theme={null} finalIntensityComponentMode = true finalIntensityVolumetric = 0.5 // Reduce volumetric brightness finalIntensityProjection = 1.0 // Keep projection full finalIntensityFixture = 0.7 // Reduce fixture mesh enableStrobe = false // Disable if not needed ``` ## Shaders Moving lights use multiple shader components: ### Spotlight Shaders * `VRSL-StandardMover-FixtureMesh.shader` - Fixture body * `VRSL-StandardMover-ProjectionMesh.shader` - Light projection * `VRSL-StandardMover-VolumetricMesh.shader` - Volumetric cone ### Washlight Shaders * `VRSL-WashMover-FixtureMesh.shader` - Fixture body * `VRSL-WashMover-ProjectionMesh.shader` - Light projection **Location:** `Runtime/Shaders/MovingLights/` ## Use Cases ### Spotlights * **Stage Key Lighting** - Focused illumination on performers * **Gobo Projections** - Pattern and texture projection * **Spotlight Effects** - Dramatic beam effects * **Follow Spots** - Tracking moving subjects (via Udon) ### Washlights * **Area Lighting** - Wide coverage for stages and sets * **Color Washes** - Full-stage color changes * **Uplighting** - Wall and backdrop illumination * **Ambient Lighting** - General scene lighting ## Troubleshooting ### Fixture Not Moving * Verify DMX channel assignment matches control software * Check that pan/tilt channels are receiving data * Ensure `enableDMXChannels` is enabled * Verify VRSL Grid Reader is present and configured ### Erratic Movement * Increase smoothing (in Grid Reader settings) * Check for stream compression artifacts * Verify channel assignments don't overlap * Test with slower movement commands ### No Light Output * Check intensity channel (Channel 8) is above 0 * Verify RGB channels (5-7) have values * Ensure `globalIntensity` and `finalIntensity` > 0 * Check that fixture isn't obscured by geometry ### Gobo Not Appearing * Spotlight only - washlights don't support gobos * Verify Channel 10 is within correct range * Check `selectGOBO` property in Udon mode * Ensure gobo textures are assigned in material ## AudioLink Integration AudioLink variants support: * Band selection for intensity modulation * Band multiplier for sensitivity adjustment * Color chord sampling for auto-coloring * Theme color integration * Delay offset for timing effects See [AudioLink Setup](/guides/audiolink-setup) for configuration details.