Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 11 of 11

Thread: DJ controller, not just a midi controller

  1. #1

    DJ controller, not just a midi controller

    I have seen many midi controllers as I have searched, but not one that is also the sound card as well.
    I am wondering what it would take to build something like this:
    http://www.denondj.com/products/view/mc6000mk2
    This controller not only controls the software, but outputs the audio as well, and has two analog inputs to act as a 4 channel mixer.
    Now this may very well be cheaper to buy than to build, but I am wondering if two teensys with audio shields could do the job.

    thanks

  2. #2
    Senior Member oddson's Avatar
    Join Date
    Feb 2013
    Location
    Isle in the Salish Sea
    Posts
    1,115
    One Teensy 3.# should be able to do this... quad audio via the library is possible and mixing in MIDI is not very taxing on the processor so you'd have lots left for a reasonably low latency audio interface via Paul's audio library...

    It would, however, not be 24 bit audio... (16 bit 44.1 kHz 'CD' quality) ... If you want higher you cannot use the audio library and I think that eliminates Teensy if that's a deal-breaker for you.

    Don't even ask about it being added
    https://www.pjrc.com/teensy/td_libs_AudioRoadmap.html

  3. #3
    well, quad mono audio, I'm looking for quad stereo.
    I'm thinking that the quad audio would still work for mixing the two song on the pc.
    Then output that to my opamp section where I could route it to pre fader listen, master out or booth out.
    Perhaps the two analog aux sources would just bypass the teensy set up and go straight to the analog mixing section?
    Last edited by j_dunavin; 02-16-2017 at 05:28 PM.

  4. #4
    You could definitely rig a teensy to become a USB CD player, stream the music from the PC and adjust volume, pause/play skip, even read mutlple tracks and mix them together. 3.x will do that just fine. But...

    I don't think It would be a bad reflection on ANYONE who was unable to singlehandedly create one of those - irrespective of cost, or time!
    My advice (and what I'm currently doing) is to approach something like the novation launch control. I've got a SDJ2, which gives me nice platters, 4 virtual decks and handles the sound well, and one the side of that I'm using a teensy in a controller to add 80 buttons and 20 knobs. You can definitely make a nice midi controller, that has exactly what you want and for a reasonable cost.

    I know that's the exact opposite of what you've said but seriously that's a big task. If you've not already made a midi controller do that first, and actually if you do go one to make something bigger most of the work you do in the first controller will feed forward into that.
    If you really are interested (even just academically) I can break down some of what I think the challenges are and why thery're so damned difficult.

  5. #5
    Senior Member oddson's Avatar
    Join Date
    Feb 2013
    Location
    Isle in the Salish Sea
    Posts
    1,115
    Yeah... do not do this to save money... Behringer makes something similar (Studio 4A DJ Controller) for about US$200... building the box and fitting out the controls will cost you that much unless you have a source of parts to plunder.

    And then you still have to figure out how to program it!

  6. #6
    Oh I agree that it would be a huge undertaking.
    I really am not sure that you could build something as nice as that Denon piece for the $550 they are selling for new.
    I'm just interested if it's possible.

  7. #7
    Totally possible! I think if I had a spare 6 months (and I mean that at 37.5 hours a week) and about 4-5k I could get something done. The platters would be the really difficult bits of hardware, it's not that easy to make something that behaves perfectly - with the right weight and feel.
    As for the software, I've no Idea how easy to interface a (100%) custom controller is. Serato usually lets you midi map the hell out of it, but I dont know how far down that goes.

  8. #8
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    Posts
    20,169
    Teensy's audio lib and USB MIDI support can definitely help on the software side, but indeed there's a LOT of mechanical work to do anything even close to that Denon product.

  9. #9
    Senior Member MickMad's Avatar
    Join Date
    Feb 2013
    Location
    Italy
    Posts
    162
    Quote Originally Posted by PaulStoffregen View Post
    Teensy's audio lib and USB MIDI support can definitely help on the software side, but indeed there's a LOT of mechanical work to do anything even close to that Denon product.
    Just interfacing all those buttons and knobs and LEDs is going to be tricky to say the least...

  10. #10
    Quote Originally Posted by MickMad View Post
    Just interfacing all those buttons and knobs and LEDs is going to be tricky to say the least...
    You're not wrong, it would be non-trivial! I think you'd either end up with some b-e-a-u-tiful wiring, all loomed up and complete with diagrams - or something that looks like a dreadlock!

  11. #11
    Maybe something like this, but using a teensy 3.6 and two audio boards?
    http://www.instructables.com/id/Teen...lers/?ALLSTEPS

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •