On 12/04/2020 09:32, Tricky Dicky wrote:
Incidentally a person detector is very close to a Theramone. Did I spell
that right, one of those musical instruments that makes sounds by waving
your arms around near to two metal electrodes.
Brian

Nearly there Brian it is a Theremin

Richard


https://www.youtube.com/watch?v=V0zQHNmz0gU

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