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scratchcontroller

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scratchcontroller [2016/07/04 01:10] – [How To Build] psykhazescratchcontroller [2016/07/04 01:46] (current) – [Software] psykhaze
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   * A smooth, reliable, high quality crossfader with curve control.   * A smooth, reliable, high quality crossfader with curve control.
  
-**[[http://midibox.org/forums/topic/10400-scratch-wheel/|Forum thread]]**+**[[http://midibox.org/forums/topic/10400-scratch-wheel/|Original Forum thread]]**
 ===== Design ===== ===== Design =====
  
 ==== Crossfader ==== ==== Crossfader ====
  
-The crossfader is the simplest part of the project. There are a number of faders on the market specifically designed for scratch DJs. For example :+The crossfader is the simplest part of the project. 
  
-  * [[http://www.eclecticbreaks.com/proxfade/|Eclectic Breaks Pro-X-Fade]] +For example : **[[http://www.innofader.com/whichinno.php|Audio Innovate Innofader]]**
-  * [[http://www.infiniumtechnologies.com/|Infinium Technologies digital fader]] +
-  * [[http://www.audioinnovate.com/|Audio Innovate Innofader]] +
-  * [[http://www.vestax.com/|Vestax CF-CC]] or CF-PCV+
  
-The analogue ins of the PIC mean the fader can be used with no additional circuitry. Hooray! 
  
 ==== Jog Wheel ==== ==== Jog Wheel ====
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 I put the two photodiodes into two voltage dividers and wired them into pins 4 and 5 of the PIC. The comparators of a PIC18F4620 (or 4685) can be used to avoid extra circuitry. I put the two photodiodes into two voltage dividers and wired them into pins 4 and 5 of the PIC. The comparators of a PIC18F4620 (or 4685) can be used to avoid extra circuitry.
  
-{{ ::neonking:scratchtroller7.png?direct&600 |}}+
  
 ==== Software ==== ==== Software ====
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 The MIOS code tracks the encoder wheel, and counts the number of forward and backward steps. Then every couple of milliseconds it sends the relative position as a CC event. The value of the CC is equal to 64 (0x40)plus/minus the number of steps, for example for 10 steps back the value would be 54 (0x36). The MIOS code tracks the encoder wheel, and counts the number of forward and backward steps. Then every couple of milliseconds it sends the relative position as a CC event. The value of the CC is equal to 64 (0x40)plus/minus the number of steps, for example for 10 steps back the value would be 54 (0x36).
  
-There are quite a few DJ applications that support MIDI scratching in this format, the two I've tried are [[http://www.mixvibes.com/|Mixvibes DVS]] and [[http://www.native-instruments.com/index.php?id=traktor3_us|Native Instruments Traktor 3]]. M-Audio Torq doesn't work as of the current version (1.0.6) as it has a bug in the MIDI code.+There are quite a few DJ applications that support MIDI scratching in this format, the two I've tried are [[http://www.mixvibes.com/cross-dj-mac-pc/|Mixvibes DJ]] and [[http://www.native-instruments.com/en/products/traktor/|Native Instruments Traktor]]. M-Audio Torq doesn't work as of the current version (1.0.6) as it has a bug in the MIDI code.
  
  
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 ==== Assembly ==== ==== Assembly ====
  
-[[http://picasaweb.google.co.uk/rasteri/Scratchtroller/photo#5216080813603959586|Here is the assembly diagram]].+{{ ::neonking:scratchtroller7.png?direct&600 |}}
  
-Notes/Hints :+**Notes/Hints :**
  
   * There should be washers between the nuts and the scratch wheel.   * There should be washers between the nuts and the scratch wheel.
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 Code can be found in <del>[[http://www.midibox.org/forum/index.php/topic,11167.msg94756.html#msg94756|this forum post]].</del><sup>dead link</sup> Code can be found in <del>[[http://www.midibox.org/forum/index.php/topic,11167.msg94756.html#msg94756|this forum post]].</del><sup>dead link</sup>
  
- 
-===== Schematics ===== 
- 
-[[http://picasaweb.google.co.uk/rasteri/Scratchtroller/photo#5216080810302030418|This schematic]] shows how to wire everything up to the PIC. Should be trivially adaptable to work with a "real" midibox core module.  
  
  
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-===== Photos =====+===== Original Photos =====
  
 http://picasaweb.google.com/rasteri/Scratchtroller http://picasaweb.google.com/rasteri/Scratchtroller
scratchcontroller.1467594649.txt.gz · Last modified: 2016/07/04 01:10 by psykhaze