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Topic: Arduino Theremin/Synth (Read 2527 times) previous topic - next topic


Jun 26, 2009, 03:52 am Last Edit: Jun 26, 2009, 03:52 am by ohnoezitasploded Reason: 1

Hi All,
   I made a combination Theremin/Synthesizer for my sister, who's a musician, and I'm pretty happy with the way it came out.  It has the following features:

  • Four octaves of continuous pitch variation by moving your hand nearer or farther from an ultrasound sensor
  • Digital volume control
  • Continuous waveform variation-can generate a pure sine tone like a classic theremin, or one with overtones, which sounds like an 80's synth organ.
  • Spectral glide-similar to a Wah pedal or the instrument used in Peter Frampton's 'Do You Feel Like I Do'
  • Decay/Sustain-envelope shaping to play notes
  • Distortion-sounds like the guitar effect.
  • Blue case lighting with 'heartbeat' effect

It's powered by a 5V/16Mhz Arduino Pro 328.  Pitch control is done with ultrasound, the other effects by controls which move an LED nearer or farther to a photoresistor.

I've done a pretty extensive write-up of the hardware and software on my blog, might be helpful for someone who's working on a similar project.




Man, that looks awesome! I should build something as a gift too, so I am forced to build a nice housing as you did...
And the features sound great as well!


Very nice work on the housing!


Bookmarked your eclectic blob.
Keep up the good work!

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