I am an old new user here.
i am attempting to make a vibration sensor using a Piezo.
using the analogRead i get a lot of noise when there is no vibration on the sensor.
the read jumps between 0 to 100 (using INTERNAL AREF)
But then, if i stand barefoot on the floor and i touch the arduino’s ground terminals, i get very good readings.
i know i can use a threshold or i can use smoothing, but both reduce the sensitivity,
Is there a better way to use the maximum reliable sensitivity?