WLED Pixel Grouping treats N consecutive physical pixels as one DMX channel to stretch limited universes

In WLED’s Multiple RGB family of DMX modes, the segment’s Grouping setting lets several consecutive physical pixels share one DMX channel group and count as a single ‘LED’ in the channel sequence. Setting Grouping to 3 means every 3 pixels take the same colour and consume one RGB channel triplet instead of three. This is a planning lever: it multiplies the effective pixel count a single universe can cover (at the cost of spatial resolution), useful when a DMX source has fewer channels than the strip has physical pixels, or when you want clusters of LEDs to act as one fixture. Grouping applies to Multiple RGB, Multiple RGBW, and the Dimmer + Multi variants.

Examples

A 510-pixel strip with Grouping = 3 behaves like 170 addressable groups, fitting one universe at full-strip coverage. A DMX desk with 30 channels can wash a 30-cluster installation via grouping.

Assessment

You have 340 physical pixels but only one E1.31 universe. Explain how Pixel Grouping lets you cover the whole strip, and state what you sacrifice by doing so.