Theremin

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Theremin

In the February 1996 issue of "Electronic Musician", an article by Robert Moog, titled "Build the EM Theremin" was published. Below are the details, images and a sound file for the THEREMIN I built from that article.

Schematic

RMTP-EM Theremin Schematic.jpg

Bill of Materials

RMTP-EM Theremin BOM.jpg


Divide and Conquer

I divided the implementation of the electronics into 6 sub circuits.

  • Power Supply

RMTP-Power Supply Circuit Board.jpg RMTP-Etherwave PSU bb.jpg

  • Pitch Antenna Circuit

RMTP-Pitch Antenna Circuit Board.jpg RMTP-Etherwave Pitch Antenna.jpg

  • Volume Antenna Circuit

RMTP-Volume Antenna Circuit Board.jpg RMTP-Etherwave Volume Antenna bb.jpg

  • Variable Pitch Oscillator - Fixed Pitch Oscillator - Pitch Tuning

RMTP-Pitch Control Circuit Board.jpg RMTP-Etherwave Pitch Circuit Stripboard bb.jpg

  • Volume Oscillator - Volume Tuning

RMTP-Volume Control Circuit Board.jpg


  • Detector - Voltage Controlled Amplifier - VCA Processor

RMTP-Detector VCA and Processor Circuit Board.jpg RMTP-Etherwave Amp Alt Stripboard bb.jpg

Photos

RMTP-Theremin on Workbench.jpg

RMTP-Pitch Antenna Circuit Board.jpg

RMTP-Pitch Control Circuit Board.jpg

RMTP-Detector VCA and Processor Circuit Board.jpg

RMTP-Volume Control Circuit Board.jpg

RMTP-Volume Antenna Circuit Board.jpg

RMTP-Power Supply Circuit Board.jpg

Fritzing

Actual construction resulted in difference between the fritzing layout and actual build.

RMTP-Etherwave Pitch Stripboard bb.jpg

RMTP-Etherwave Amp Alt Stripboard bb.jpg

RMTP-Etherwave Volume Stripboard bb.jpg

RMTP-Etherwave PSU bb.jpg