*BUILD LOG* 'CDJ 2000'-style DIY Traktor controller - Page 15
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  1. #141
    Tech Mentor derschaich's Avatar
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    Quote Originally Posted by MiL0 View Post
    nice one - those 2 look just the job

    not sure if the 4th button will be a problem; probably not a great idea having a midi CC being outputted the whole time (unless de-pressed).. perhaps there's a way to reverse it in the Arduino code?
    as far as i know about midi-signals, they only send data, when a value is changed. so no problem with releasing/pressing buttons for a longer period!

  2. #142
    Tech Mentor ToS's Avatar
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    ...unless you are gonna use a button matrix.
    http://www.dribin.org/dave/keyboard/one_html/
    Many photons have died to bring you this information.

  3. #143
    Tech Guru MiL0's Avatar
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    you know what I'd really like to use for my buttons? laptop keyboard keys! I'm gonna see if I can remove the individual buttons from an old keyboard I think...

  4. #144
    Tech Guru Archies'bald's Avatar
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    With regard to the aluminium sheet, it's not the thickness of the aluminium I was worried about, but the spacing between the buttons. If they are too close together then you can have problems when you tighten the lock nuts up. Obviously the more holes you drill closer together, the weaker the metal will become.

  5. #145
    Tech Guru MiL0's Avatar
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    do you mean that the lock nuts might touch each other or overlap? or do you mean that because the holes are so close together, that the 5-7mm section of aluminium between each hole is too narrow and might snap? surely thicker aluminium would solve this?

    sorry if I'm being a bit dim... heavy night last night lol

  6. #146
    Tech Mentor extraclassic's Avatar
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    As mentioned before Tactile switches along with some caps might be worth considering.

    Some of these



    And these



    or these



    Also get some strip board to mount them on.

  7. #147
    Tech Mentor michaeldunne109's Avatar
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    Quote Originally Posted by extraclassic View Post
    As mentioned before Tactile switches along with some caps might be worth considering.

    Some of these



    And these



    or these



    Also get some strip board to mount them on.
    Nice find way better than hacking apart an old laptop keyboard!
    I play everything Indie/ Rock/ HipHop/ Cheese/ Electro/ Dubstep and anything that sounds good

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  8. #148
    Tech Wizard Siytek's Avatar
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    Default Traktor/Ableton Arduino

    Hi All

    Just been reading this thread, you guys seem to be a nice little way into building a controller from seeing the pics, I have spent a heck of a lot of time recently developing Arduino MIDI stuff so just thought id share my current project if any of you were interested. Would be more than happy to help/get involved, particularly if your developing with Arduino. I was reading earlier in the thread that a few of you were talking about an Arduino + MUX shield sollution... my board is fundimentally an "Arduino + MUX Shield + MIDI IO Shield" on one board

    My design started life as a general Sensor --> MIDI project that could be shaped into any MIDI controller (for those wanting to build but without wanting to do the electronics) however it seems the project is leaning towards Traktor/Ableton recently. Heres the spec...

    * Arduino based design using ATMega168 (or 328) with on-board MIDI I/O port
    * 48 Analogue / Digital inputs or outputs (6 ports with 8 pins, each can be either I or O) by use of on-board multiplexers
    * Built-in twin 8-LED bargraph VU meter, controlled by MIDI CC
    * 8x2 (or 16x2 if you want) LCD display
    * Menu system allows for changes without reprogramming, so Arduino is optional, the MIDI config can be changed with the LCD menu
    * Supports the display of Traktor track name, artist and time on the LCD display (Uses/hijacks the data Traktor sends out for the Denon HC4500 LCD display)

    There is no built-in FTDI chip like there is with the Arduino boards however there is a connector for an FTDI programmer, I use the Modern Device USB-BUB, http://shop.moderndevice.com/products/usb-bub, the little red board shown in my picture below

    Im keen to get some feedback about whether peeps are interested in this kind of product aimed specifically at Traktor or Ableton. This is only a prototype board meant for testing all the features, so it looks a bit of a mess! Please excuse rubbish mobile phone camera pictures too!





    Last edited by Siytek; 04-15-2011 at 06:52 AM.

  9. #149
    Tech Guru MiL0's Avatar
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    Nice choice of music you got playing there :P

    and your project looks very impressive... what's your ambition? are you looking to comercialise it somehow? edit: it looks as if you're actually designing your own Arduino hardware yourself? Let me get this right... you're designing a PCB that has the Arduino-based hardware, all the muxes and the I/O, all on one board?

    and my big question would be, how the hell are you getting the track title / artist information out of Traktor?! There isn't any way that I know of (and I've tried literally everything!) apart from using the shoutcast/podcast hack. The problem with that is the title information gets exported after a long delay which obviously isn't ideal.

  10. #150
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    Quote Originally Posted by MiL0 View Post
    you're designing a PCB that has the Arduino-based hardware, all the muxes and the I/O, all on one board?
    It's easier than you think

    Quote Originally Posted by MiL0 View Post
    and my big question would be, how the hell are you getting the track title / artist information out of Traktor?! There isn't any way that I know of (and I've tried literally everything!) apart from using the shoutcast/podcast hack. The problem with that is the title information gets exported after a long delay which obviously isn't ideal.
    I've been researching this for a little bit myself... If you add the denon controller to your controller list traktor will automagically send the track information... The problem I had was the second I added it my sound started to break up and crackle big time... (I believe this is related to the MIDI LED issue from TP1 -- fixed in TP2)...

    Due to that issue I never really took the time to see what data was being sent... Any chance of seeing the code for that part?

    Is that a double sided board? Assuming you did it at home; very very nicely done... I've nailed down single sided boards, but I'm a little wary of trying double sided, any tricks?

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