Narbotic Instruments MidiVox Shield
Photo: Narbotic Instruments
Shield URL: MidiVox Shield
Tags: midi, music, sound
Maker: Narbotic Instruments
MidiVox turns an Arduino board into a programmable MIDI synthesizer.
The shield provides an isolated MIDI input jack along with a single-channel, 12-bit, digital audio output. Any MIDI keyboard with a DIN-5 output can be used to control the shield. Assignable knobs/faders on your controller will come in handy for modifying synth parameters as you play.
Intended for use as an experimental digital synthesizer, the board can be easily modified for use as a MIDI->CV converter or a MIDI output device.
The kit incorporates an MCP4921 Digital to Analog Converter (DAC) chip, with an 6N138 optocoupler for industry-standard MIDI input.
Open Source:  Yes, OSHW-compliant
License: CC BY-SA 2.5
Source: www.narbotic.com/kits/midivox/
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Note:
D0: MIDI in (can be switched off)
D6: Button (labeled RESET)
D7: LED (labeled DATA)
D9: DAC CS
D11: DAC DI
D13: DAC SCK
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