piezoelectric vibration sensor noise in plotter

[reynaldo]

Hi

I tested the sensor on an Arduino board and the readings are correct but when I connect it to the huzzah with esp8266 it gives me a lot of noise.

What adaptation do I have to make to make this sensor compatible with huzzah?

[adafruit_support_bill]

Not sure about the sensor you are using or the scale of your plots, but the analog range for the ESP8266 is 0v-1v vs 0v-5v for the Arduino. That means both signal and noise will be magnified by a factor of 5. You also need to use care not to exceed the 1v input range.