Martin Gregorie  wrote:
>
> I suspect you'll get better suggestions if you can outline what you are
> trying to do.

My hope was to elicit reports of practical experience....

>
> For instance, are you trying to get analogue output from digital
> recordings or do you want to digitise audio from a mic or turntable?
>

The motivating problem is monitoring power supply voltage on a Raspberry
Pi4 during boot and disk spin-up. I'd like to see the voltage rise, sag
during boot and spin-up and then stabilize. Depth and duration of the
sag would be the most essential observation.


> What pert of the system (analogue or digital) do you need to trouble-
> shoot?
>
Basically power supply circuits. A "stop trigger" that halts recording
when something interesting happens is much desired.

Thanks for writing!

bob prohaska
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