Paper-Synthesizer 201 - MIDI to Control Voltage


by Antti Pussinen and Wolfgang Spahn

In the next installment of Paper Synthesizer workshops, we build a duophonic Midi to Control Voltage converter. The module fits in to Eurorack format, or can be built as a separate interface box. The converter talks with both USBmidi and normal Midi via midi cable.

UsbMidi/Midi to CV converter is the interface that lets other computers, synthesizers and controllers integrate into the modular synthesizer world. While an old standard, Midi keeps its place as the universal data connector in synthesizer world, as well as for other creative controllers ranging from vj and dj controllers, to custom diy button banks, and media artworks.

Control voltage is the analog old school version of midi, where change in voltage means a change in pitch or some other parameter. One instrument is represented as a Volt/Octave output changing the pitch, Gate output telling if the note is on or off, and velocity output, changing the dynamics of the sound.

Our midi to cv offers two of such instruments, with additional midi clock to clock output, and two midi cc to cv output.

Our midi to CV is a open source, arduino based, open hardware project.

The converter offers:

  • 2 x 1V/Oct CV Out
  • 2 x Gate Out
  • 2 x CV Out (velocity)
  • 1 x Clock Out
  • 2 x Assignable Midi CC Out

It is powered over standard Eurorack power connector (+12V,-12V). A 12V powered box is also possible with adding an dc-dc converter in the box.

The Circuit is built around an Arduino Pro Micro controller, and a two channel precision digital-to-analog converter. In the workshop we go through the circuit of the module, build, test and trim a working module and look a bit into to the code.

All the tools and materials will be provided.
The faceplate is not included!
The workshop will be held in German and English.

Material:
http://paperpcb.dernulleffekt.de/doku.php?id=paper_synth:midi_to_cv


When

Oktober 24. 2015, 11am - 5pm


Where

How much

The costs are 60,00€ for the materials - no extra fee!


Registration