How to program a M4L Patch for having visual LED feedback with Novation Launchpa

    Dec 12 2012 | 11:27 am
    I am trying create a very simple M4L midi device in order to turn on/off the LED feedback at button pressure in the User1 page in my Novation Launchpad.
    The problem is: if I try to do it in Max alone (I mean, with Ableton Live closed), it's super easy:
    I just create a "midiin Launchpad" object that goes directly into a "midiout Launchpad" object, and I get immediately a LED feedback.
    Unfortunately, if I open this patch inside Ableton Live, nothing happens, the buttons remain off.
    I also tried to create an abbreviation, from Max menu → Options → MIDI Setup.
    I called "Launchpad" in and out ports as "a"...
    Once again, in Max itself it works immediately, but not when I put the patch inside Ableton Live.
    Any suggestions?
    Thank you very much!

    • Dec 12 2012 | 2:48 pm
      Do not use the "Launchpad" attribute when creating midiiin and midiout objects in Max4Live... just midiin or midiout .
      Live can only see the midi stream routed to the channels max4Live plug by Live:
      you select the midi in and out in the Ableton Live MIDI channel.
      & You must be sure the Launchpad is "seen" by Live, by selecting it for input and output in the Live Midi preferences.
      hope that helps...
    • Dec 20 2012 | 3:48 pm
      Or use user 2 mode of the launchpad, and then utilise the control_surface method to light etc.