I've been powering the Mega via the USB plug, but yesterday I tried the AC adapter and still got some noise. I didn't do any statistical tests to know whether it made any difference, but it did seem slightly less noisy when using the adapter.
I've been powering the Mega via the USB plug, but yesterday I tried the AC adapter and still got some noise. I didn't do any statistical tests to know whether it made any difference, but it did seem slightly less noisy when using the adapter.