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This is a board for making the Arduino into a portable stand alone music synthesizer. It plugs directly into the Arduino board and provides 25 multiplexed keys (2 full octaves), 4 pots, status LED, reset switch, digital to analog converter IC, and a RCA audio jack. The Arduino board with its powerful AVR processor is more than adequate for a wide range of sound synthesis techniques. We have experimented with additive / wave-table synthesis, frequency modulation, ring modulation, sampling, polyphony, various arpeggiators. The whole thing can be powered over the Arduino's USB port for convenient experimenting.
The board is designed to mount easily to 1/8" panel material, and 1/2" round keys can be made out of wood or plastic. See this example enclosure
Some sound examples from the example patches below. FM synth and Poly Octave Arpeggiator:
Features:
- 25 keys and multiplexer circuitry
- 4 potentiometers, 1 controls output level
- Microchip MCP4921 12 bit SPI DAC
- Passive low pass output filter
Info:
- Assembly Instructions
- Some more detailed instructions. Thanks to Collin at Make!
- Felt Top Enclosure
- Schematic
- Layout Image (for making custom panel)
- Arduino Information
- Gerber Files (for making your own PCB)
Below are some example Arduino sketches:
- Sine Tone Test demonstrates sine wave synthesis
- Simple Keyboard reads keys, and plays tones
- FM Synthesizer more complex FM synthesizer
- Octave Arpeggiator polyphonic octave sweep thing
more coming soon....
Note: The kit is not compatible with the earlier Arduino NG boards, but works well with the Diecimila and Duemilanove boards.
Kit only, Arduino Board not included: $44.95 Currently sold out, but you can get one here
Kit with Arduino Board (a $35 value): $74.95 Currently sold out, but you can get one here
