I am going to start working on building a cheap Theremin, and got to thinking about the circuitry and how capacitance varies from person to person, or for that matter, by the same person day to day.
Regardless, has anyone installed a Theremin on a pinball machine? I would think an EM machine would be best, since each side rail could be isolated from each other. What was your experience? Any tricks you learned that you could pass on? Thanks