The theremin is a cool and spooky musical instrument. People have been waving their hands around its antennae since the dawn of electronic music!
A couple years back, I attempted to build one with Jason Bartl for a class project. The software, which was written in assembly for the Microchip 18F452, was mostly finished. The PCB we sent out for wasn’t correctly designed… There was a bit of trouble with the SPI interface with the accelerometer, and other issues finding an appropriate output DAC. I also burned through more than one 452 because I tried to drive a speaker directly from an output pin :S
With my recent experience on the Word Clock, I feel more confident about doing up my own PCB, so I’m going to give this project another go. This could probably be done with a much cheaper Microchip MCU than the 452, but hey, I’ve got 5 4520s just sitting around so I’ll use them first.
I’ll be posting the source files up here soon. I’m thinking this would be a great project to release with the OHANDA licence.