The "tone" detection hit a memory: there is a device where a tone is generated instead, after the detection of not even a contact, but the proximity of a body.agurney wrote:As per the linked post "...I never even tried the tone approach as I suspected it would just lead down the same rabbit hole..."
Do you know the Theremin? Maybe it's not a rabbit hole after all
https://opensource.com/article/21/3/ope ... e-theremin