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Universe Passthrough forwards external DMX input directly to output, enabling protocol conversion and data merging

Concept L3Craft I · VJing, projection mapping, LED/DMX & video

When Passthrough is enabled, a QLC+ universe forwards its input line data unchanged to its output line. Uses: protocol conversion (Art-Net in → DMX USB out), monitoring external desk data, merging an external console’s output with QLC+-controlled fixtures on the same universe (HTP merge), or Raspberry Pi slave/master switching. Passthrough data bypasses Grand Master and channel modifiers. It merges with QLC+ output in HTP fashion for patched channels. Blackout does suppress passthrough.

Examples

A band’s touring desk controls dimmers via Art-Net Passthrough while QLC+ drives moving heads independently on the same universe.

Assessment

What happens to passthrough data when the Grand Master is at 50%? What happens during Blackout? How does passthrough merge with QLC+ output on shared channels?

Prerequisites — understand these first

Don't confuse with

Sources

“When passthrough is enabled, universe just forwards what it receives in its input line to its output line. This is useful for several things: Protocol converter: when you want to use QLC+ to act as a”
corpus · qlc-user-manual-open-source-dmx-lighting-control · chunk 24

Taught in modules