How would I make a cheap displacement sensor? Answered
I was thinking about putting a plunger against a slide pot with a spring to reset the pot, or making a plunger that rolls a rotary pot with a spring, but I was wondering if there was a way that I could use a piezo like this
I think I could have a plunger push down on a spring that touches the exposed part. I don't need to do anything with the signal other than read the voltage and even then I just need to know what it's at compared to the range of values from pressed down to not.