LED Mapping

LED mapping, also known as pixel mapping, allows you to convert pixels into DMX data. Especially to control LED strips or LED matrixes.


Principle

First, create a DMX layer by clicking on the triangle icon in the bottom-left corner :

Note that you can create DMX layer both in dashboard and timelines.


Also, DMX layer will always be on top of other layers :


Indeed, they use the content of layers below them :


In this case, the DMX layer is converting 8x4 = 32 RGB pixels into DMX data, continuously updating the value of 32x3 = 96 DMX channels.
 This can control a 8x4 LED matrix for example.

Properties

The DMX layers share some properties with other layers, but they also have settings to configure how they send DMX data :

More info about DMX devices can be found in this article : Devices


They also defines a fixture :


  • Fixture
     The color format of your LED (RGB, BGR, mono, …) and the bits (8 or 16).
     Note that you can create your own format of fixture, see next section.
     
  • Resolution
     
    Indicate the number of LED for your fixture
     
  • Flip
     Options to obvisouly reverse the order of the LED.
     
  • Pixels
     
    The texture's size from which the LED colors will be compute.
     This is often useful to set an arbitrary size to match your content size.
     
  • Curve
     To modulate how DMX data is affected by pixels brightness, see next section.

Custom Fixtures

Click the hamburger icon next to the fixture field to open the fixture editor :


This is useful if you are using LED with a special format, or if you want to control something else, such as a light.

Curves

The second tab of the popup allows you to create curves :


This is useful when your LED do not display the right color/brighness, because colorimetry of LED is not linear.