I would like to know why my Keyes KY-037 Audio Sensor returns me always same value which is in my opinion value of Vcc... When I set threshold to max, I'm getting value ~4096 of analog output (because my ADC convertor on mcu is 12bit; 2^12 = 4096).
I have done test with my ADC conversion, because I connected instead of microphone analog out, I connected on Vcc and GND, and I recieved values ~4096, ~10 respectively, so it's obvious that problem is with microphone analog output.
I don't see any difference on loud, or silent, like my audio sensor is not reacting on environment.
I'm sorry but I don't use Arduino MCU, hope you can help me, no matter I use stm32f4 mcu.
Feel free to ask about any information which may be relevant to this issue.
Thanks in advance!