How to record audio and save it to wav file using Electret Mic Amp - MAX9814?

[ScruffR]

@noobatparticle

Then is there any way to auto reset the device after i plug the argon back in?

Yes, ...

@ScruffR

call it conditionally when you detect a problem.

... or another possible condition could be based on the System.resetReason().

@noobatparticle

I don’t know why pressing the reset button can work but replug the argon won’t work.

That's what I meant when I previously said

@ScruffR

The only issue I couldn’t get to the bottom yet is immediately after you take out the SD and put it back in, the first initialisation of the SD card fails but after a mere reset it works as expected.

(apparently replugging the entire system suffers the same issue)

But one difference between cold power-up and reset is that the 3.3V rail - which supplies the SD card - stays powered across a reset but does (obviously) not so when cold-booted or un-/replugging the SD.