Hello all,
I noticed that when I power (with a power bank) my regular Nano (old board style) via the USB port I get a clean ADC reading from my microphone but using the same power via the Vin pin I am getting noise.
Is there a filter stage on the USB port?
If so how can I use this instead of Vin - not wanting to use the USB plug.
Any suggestions?
Thanks,
Markus