Module is available as a DIY project only.
This Module is discontinued.
MIDI to CV Convertor
The midiDAC is a single channel midi to CV convertor designed to drive any 1V/octave synthesiser. However, it has been designed to fit beautifully into a MOTM or Oakley modular system. Eight outputs are available:
Gate: +5V gate.
Pitch CV (Key CV): 128 steps of 12 bit accurate pitch voltage conforming to 1V/octave (trimmable). Pitch bend is added to this signal which can be adjusted via the bend depth control to give the maximum bend interval.
Pitch Bend: This signal is also available individually. It is bipolar; so with no bend, the output CV is zero.
Velocity: 0 to 10V proportional to midi note on velocity.
Aftertouch: 0 to 10V proportional to midi channel aftertouch.
Legato: This signal goes to +5V when two notes are played at the same time. This can allow slides to be switched in at will; TB303 style.
Modulation wheel: 0 to 10V proportional to mod wheel position.
CC: Continuous controlled number 100.
The outputs are available on two sets of 0.1" connectors at the top of the board but an additional three way header will interface directly to pipe Key CV and gate to the Oakley bus. The design also features a midi thru.
Power Requirements
Power (+/-15V) is provided to the board either by our standard Oakley 4-way header or Synthesizers.com header. Current consumption is approximately +40mA and -30mA. This module will not run from +/-12V supplies.
Other Features
The midiDAC also includes a TB303 style slide circuit. This can be turned on and off manually, or by playing two notes at once. The pitch will glide up or down to the most recently pressed note. A pot can control the speed of the slide.
There is a note stack within the firmware to allow the midiDAC to remember notes pressed. Thus if two or more notes are pressed at the same time, the oldest notes will be remembered so that if the more recent notes are removed the pitch will return to the still pressed older notes.
New note retriggering can be switched in or out to suit your playing style. Note retriggering - called Multiple on the front panel - will allow you to play super fast keyboard runs. Each new note pressed will retrigger the synthesiser's envelopes irrespective of how many others are still held down.
