purpley!

MIDIVox incorporates an Digital to Analog Converter chip (MCP4921), with an optocoupled MIDI input - together as a shield/daughterboard for the Arduino microcontroller platform.
Features include:
  • Indicator LEDs for power and MIDI data (ie - lit while note is pressed)
  • 2-pole RC lowpass filter
  • Onboard volume trimmer w/ knob
  • Slide switch for allowing MIDI or Arduino programming data
  • a fine lookin’ PCB
Several example programs have already been written/adapted for use with MIDIVox -
  • MIDI Squealer Synthesizer - original code by Marc Nostromo
  • MIDI/CV
  • DrumKey
A MIDI controller or adapter (anything that outputs MIDI) with a 5-pin DIN connector, should be compatible with this shield. The project was developed using an M-Audio KeyRig25 (inexpensive keyboard controller) The above software is compatible with both styles of MIDI note closure - ' NoteOff ' & ' NoteOn Velocity=0 '. Besides realtime performance with a keyboard, a USB-MIDI converter can also be used to playback sequences from a computer.

Photos on Flickr

© 2009 Collin Cunningham