One big reason I've wanted touch (even simple touch, eg https://twitter.com/rsnous/status/1036838826751094784 …) or buttons (eg on a breadboard->Pi) in Dynamicland is basically to do quasimodes (https://en.wikipedia.org/wiki/Mode_%28computer_interface%29#Quasimodes …) where the mode is only on while you're holding the button down
for example, hold your finger on the figure in a book to play an animated/interactive diagram
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What about those clicky metal bottlecaps as buttons, and audio processing to detect the different up and down sounds?
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Yes!! Related -- I was fiddling with this satisfying switch a few months agopic.twitter.com/qY2oyVSauH
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Nice snap! Are those magnets?
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yup! little spherical neodymium magnets, I think I think I figured out that they conduct electricity, so could detect the switching that way somehow too…
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