How To Connect Midi Keyboard To Mixxx

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How To Connect Midi Keyboard To Mixxx 5,0/5 9768 votes

Interfacing to Mixxx via MIDI (Linux)

  1. In this case you would connect a USB 2.0 cable from the back of your MIDI keyboard to the Lightning to USB 3 Camera Adapter and then plug that into your iPad. And to provide enough power to run both the iPad and your MIDI keyboard, you would also connect your iPad power supply to the USB 3.
  2. May 06, 2015  My question is incredibly basic and possibly stupid - How do I record something I play on my keyboard into MixPad. I have a Korg SP-280 keyboard and a USB Midi cable. Ive attached the cable to the IN and OUT ports on the keyboard, and then into a USB.

Without loading the correct preset, your controller does not work with Mixxx. Connect your controller(s) to your computer. Go to Preferences ‣ Controllers. Select your device from the list of available devices on the left, and the right pane will change. Activate the Enabled checkbox.

This tutorial explains how to drive QLC+ via MIDI from Mixxx. Mixxx is an open source DJ application, running on Windows, Mac OSX and Linux. The light effects are geared to a disco setup and we will use the beat detection of Mixxx to drive light effects synchronized with music.

The instructions were tested on Linux, but Windows or Mac OSX should be similar.

Prepare and configure Mixxx

We need Mixxx to send information about the music via MIDI to QLC+. For this capability we need a plugin script in Mixxx which sends the information as MIDI events.

  • Install Mixx, I used version 1.11
  • Install the 'MIDI_for_light' script from this (Mixxx forum thread)The script files (xms + js) must be installed in /usr/share/mixxx/controllers.
  • Run Mixxx in developer mode with the command 'mixxx --developer'.This is necessary because Mixxx hides the 'Midi Through' interface but we need it.
  • Start Mixxx, go to 'Options - Preferences - Controllers', select 'Midi Through', enable it and load the Preset 'MIDI for light' from the list.

This will enable the sending of Midi events. You can now run a midi monitor, like 'kmidimon', connect it to the 'Midi Through' device and look at the all the events. Be careful, Mixxx sends 40 events 25 times per second. It to my kmdimon only a minute or two to hang because of overload.

Connect Midi Keyboard To Computer

Configure QLC+

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Now we have Mixxx sending us lots of interesting data and want QLC+ to do something with it.

  • Install QLC+, I used version 4.8.2

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  • Define your fixtures and functions as usual

  • In the 'Inputs/Outputs' panel, select the 'MIDI Through' device as input

  • Select the MIDI Through device and click on plugin configuration and configure the 'Midi Through' device. Then:

    • Set the 'Midi' Channel to 1
    • Set the 'Mode' to 'Note Velocity'
    • Leave the 'Init Message' on 'None'
    • Push EXIT button.

  • In the Profile tab of the 'Inputs/Outputs' screen, add a new Input Profile. I called it 'Mixxx' and model 'MIDI'.
    Here we need to add a Channel for each MIDI message we expect from Mixxx. The list of Midi messages is documented in the file 'VU-Meter_Info.txt' you got with the Mixxx plugin script.

    • First we add a channel for the BPM info (not documented in the file).
      Add a channel, name it 'BPM', Type is 'Button', Midi channel is '1', Message is 'Note On/Off', Parameter is 101.
    • Then we add all channels with the volume information
      Add a channel, name it 'Volume - absolute', Type is 'Slider', Midi channel is '1', Message is 'Note On/Off', Parameter is 101.
    • Repeat this for all channels you find interesting
      The relative volume channels can give interesting light effects, the absolute volume is less interesting

  • Now go to your Virtual Console and start using the MIDI signals. Here two examples:

    • Configure the BPM to advance a cue list on each beat
      In your Cue list, in the 'Next Cue' tab, click on 'Choose', expand the 'Mixxx MIDI' line and pick BPM from the list. Your cue list will now advance with the beat of the music, as determined by the Mixxx beat detection.
    • Make a lamp light up with the Volume of the music (VU meter)
      Configure a Slider, on the 'General' tab, under 'External input' click on 'Choose' and select a channel of your choosing, for example 'Volume absolute'. The selected Fixture will now light up with the volume of the music, like a giant VU meter.

Mixxx uses a well defined XML format to store its MIDI mappings. It is easy to learn the basics of XML so you can edit Mixxx mappings. If you know HTML, the language that is used to define web pages, that will help because XML is very similar.

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XML is a language for describing data. It does not do anything by itself and it has no predefined uses. Many other programs have their own ways of using XML that convey different information. For example, Traktor TSI controller mapping files are XML files, but Traktor's mapping system is completely different from Mixxx's mapping systems, so TSI files make no sense to Mixxx.

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XML files are hierarchies of elements. Elements have starting and closing tags surrounded by angle brackets (also known as less than (<) and greater than (>) signs). The starting tags can be as simple as naming the element surrounded by angle brackets, for example, <group>. Starting tags can also have attributes to specify more detail about the element, for example, in <controller name=“Stanton SCS.3d”>, name is an attribute of the controller element with a value of Stanton SCS.3d. Ending tags have a slash after the <, for example, </group>. Between the starting and ending tags, elements can contain data or other elements. Empty elements are also allowed, which have a slash before the >, for example, <SelectKnob/>.