MIDI128: dual keyboard controller
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MIDI128 2x64 keys matrix driver

This model of MIDI controller is for use in bigger setups. In most expanded version it covers 384 contacts in 6 5-octave keyboards.
It is main component of various configurations and by adding scanners can be sized according to user's needs. Typical application is MIDI controller for Hauptwerk Virtual Pipe Organ consisting of 2 keyboards, pedalboard and panelboard, stuff like volume pots etc.


Features:

  • single board translates 1 or 2 keyboards of 64 keys connected in 8x8 diode matrix into MIDI notes
  • 2 inputs for optional keyboard/pedalboard scanner adding up to 128 keys each
  • 7 potentiometer inputs, each with user defined channel and type e.g. volume, modulation etc.
  • velocity of all notes adjustable by means of potentiometer.
  • unlimited transpoze up/down independent for each keyboard in semitone and octave steps.
  • independent, user defined MIDI channel for each keyboard.
  • part of the keys can be used for MIDI data other than notes, e.g. program change etc.
  • +/- buttons for Program Change messages independent for each keyboard
  • all settings stored in nonvolatile memory.
  • requires 5-12V DC power supply, about 1.5mA current consumption. No power supply needed when used with GamePort cable.
  • dimensions: 69x45mm (2.7''x1.8'')
  • more marketing talk

Download user guide.


The board shown above has 2 16-pin IDC headers for 2 keyboards, 2 10-pin headers for potentiometers and additional functions dependent on chosen version. 3 smaller whiteish connectors are for MIDI out cable, and scanners (i.e. additional keyboards)
Price 50EUR.

A few examples of available sets with single MIDI128
Complete set for specific console size consists of MIDI128 main controller board AND components listed below
console size first scanner second scanner
2 keyboards none none
2 keyboards, pedals PEDSCAN-X none
3 or 4 keyboards DMS-2K none
3 or 4 keyboards, pedals DMS-2K PEDSCAN-X
5 or 6 keyboards DMS-2K DMS-2K

If requested, part of the keyboard scanned by one of the scanner can be used as stops/pistons panelboard. Part of such keyboard would send note-on/off messages recognized usually as organ stops, and the other part - program change messages, usually used as stops and combination tabs in organ emulators.

Email for details or go to order info page.

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© 2009 Roman Sowa
Last revised January 25, 2009