ESP32 not giving correct readings unless GND is connected to earth
Posted: Mon Dec 20, 2021 8:33 pm
I am trying to measure the sound level using the code by Ivan Kostoski from GitHub and I observed a strange phenomenon. Unless I connect the GND pin to actual Ground (earth), I am not getting the correct values. I am using ESP32 dev kit v4 and an INMP441 breakout board.
My background is not Electronics so can someone please explain why this is happening and possibilities to overcome this effect. I have been using this equipment from the past few months and everything was fine until now.
Pin connections are as follows:
WS - PIN 15
SCK - PIN 2
SD - PIN 13
Thanks in Advance
My background is not Electronics so can someone please explain why this is happening and possibilities to overcome this effect. I have been using this equipment from the past few months and everything was fine until now.
Pin connections are as follows:
WS - PIN 15
SCK - PIN 2
SD - PIN 13
Thanks in Advance