I need some help with designing a filter/circuit to reduce 'noise' spikes received from MEAS piezo sensor.
The thing is when I touch the positive pin of the sensor with my fingers - output its superb! But, when I leave it as it is, the data spikes are annoying to deal with later on (included pictures).
So, the goal is to achieve values without these up's and down's, you know what I mean.
Please suggest me, what should i look for, what to do with it, etc. Im not as good as you in these things.
Data received when im touching the pins, sensor not being touched:
Data received from sensor without touching, not being touched:
Data received when im touching the pins, sensor being pressed:
Data received from sensor without touching, sensor being pressed: