xLights

xLights is a free, open-source sequencing application used to design, program, and operate animated Christmas lighting displays.

It allows users to create lighting effects, synchronize them to music, and transmit the resulting data to a wide variety of lighting controllers using industry-standard communication protocols.

xLights is one of the most widely used sequencing programs in the Christmas lighting community.

Features

xLights provides tools for:

Creating display layouts
Building models for props and decorations
Designing lighting effects
Synchronizing animations to music
Scheduling and exporting shows
Testing controllers and props

The software supports displays ranging from a few hundred pixels to installations containing hundreds of thousands of channels.

Typical Workflow

Most xLights users follow a similar workflow:

Create a display layout and define models.
Configure controllers and communication protocols.
Create or import a music sequence.
Apply lighting effects to display models.
Test the display.
Upload the sequence to a show player or play it directly from xLights.

This workflow allows a display to be designed, programmed, tested, and operated from a single application.

Display Models

Every decoration in a display is represented as a model.

Examples include:

Smart pixel props
Matrices
Mega trees
Arches
Candy canes
Singing faces
Traditional AC lighting

Models define the physical layout of the display so lighting effects can be generated automatically.

Layout and Visualization

The Layout tab provides a visual representation of the display, allowing users to position models, define wiring, and configure controller assignments.

The visual layout simplifies sequence creation because effects can be applied according to the physical location and arrangement of each model rather than by manually controlling individual lighting channels.

Supported Controllers

xLights supports a wide variety of controller types, including:

Pixel controllers
Renard controllers
DMX controllers
ESPixelStick
WLED
Commercial Ethernet controllers

Communication Protocols

xLights can transmit show data using several protocols, including:

The available protocols depend on the capabilities of the selected controller.

Advantages

Free and open source
Large user community
Extensive effect library
Supports many controller types
Cross-platform (Windows, macOS, and Linux)
Regularly updated

Why Many Hobbyists Choose xLights

xLights has become one of the most widely used sequencing applications for DIY Christmas lighting because it combines powerful sequencing tools with support for a wide range of controllers and lighting technologies.

Its active development community, frequent updates, extensive documentation, and large collection of tutorials make it suitable for both beginners and experienced display designers.

Christmas Lighting Applications

xLights can be used to:

Create synchronized musical displays
Design animated pixel props
Control traditional AC lighting
Test controllers before installation
Export sequences for show players such as Falcon Player (FPP)

Common Configuration Problems

Typical xLights configuration issues include:

Incorrect controller IP addresses
Pixel counts that do not match the physical prop
Incorrect model wiring or starting locations
Universe or DDP offset configuration errors
Models assigned to the wrong controller outputs
Controller output channels that are not enabled
Missing or outdated controller definitions

Using the controller-testing tools and verifying each prop before final installation can simplify troubleshooting.

XLights

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