Some basics to control QLC+ with Reaper using MIDI

Here's how you can do some basic control of QLC+ scenes using Reaper.

This is using Windows 11

Download loopMIDI by Tobias Erichsen

Install then run the app

Click on the "+" plus button in the corner and add a loopMIDI port. 

Launch QLC+

In the Inputs/Outputs tab

Set loopMIDI port = INPUT

In the profile tab, set to Generic MIDI

Open a scene that you have created and go to "Virtual Console"

Here is an example scene with 2 mover scenes, and 2 static light scenes

Double click a scene that you want to set a MIDI command to.  

Then select "Auto Detect"

Open up Reaper

In this example a track has been added that will have MIDI cues assigned to.

Goto OPTIONS - Preferences

Goto Audio - MIDI OUTPUTS

Hopefully you'll see "loopMIDI port".  Double click on that

ENABLE output to this device

In Reaper 

INSERT - New MIDI item

If your midi track doesn't contain "ROUTE" button as displayed here, enable it by selecting VIEW - ROUTING MATRIX

Select a point where you want to trigger a MIDI event

Double click on the new box

You'll basically see a piano keyboard on the side and a series of boxes.

We can use this to toggle an effect.

In this example, the note C4 was pressed, and then by clicking and dragging in the squares beside it, they have been made a red color.  This is the duration which the midi command is sent, but this is really fast, so you probably only need one little square selected vises the 5 in this example.  Exaggerated for effect.

In the lower right corner of this window, change the output to "CHANNEL 1"

You can close this window.  You'll now see your MIDI box, and you'll see a little black box in it.  That indicates when the midi command will be sent.

Click on the "ROUTE" button

Set the MIDI Hardware output to "loopMIDI port"

Now with QLC in AUTO DETECT, if you press play as your timeline in reaper passes across the MIDI box, you should see the value in QLC change.

In this example, it changed to "189:C4"

And if you had a lights connected to that scene, they should have activated.

Every time that midi command is sent, it will toggle the scene on/off

You can speed up detection by using the programming by clicking on CHOOSE and see the values as they would be sent by the different piano keys in REAPER

In the example below, I'm sending MIDI commands to activate and deactivate sequences in QLC+