On 2021-04-20 20:05, bob prohaska wrote:
> Has anybody used a USB sound capture device for an audio frequency
> oscilloscope on a Raspberry Pi? xoscope is available using apt,
> but I can't find any reference to what sound devices, if any, it
> can use over USB.
>
> If there are other USB oscilloscope options worth looking at
> please post. I don't specifically need RF performance, but if
> it's available it's worth a look.
>
> Thanks for reading,
>
> bob prohaska
>

all you really need is a decent A:D with a good bandwidth.

Then RPi could use SPI or I2C to talk to it.  Then you can make a
charting application to display the trace, or use an existing one [I
assume such things have been done before, it's not a new idea]

Sound card o-scope would limit to audio bandwidth.  An A:D that can run
at frequencies from DC to above 1Mhz is probably what you want.  Maybe
an ADC that is capable of doing video would work... [you'll have to
search but I remember seeing them]


--
(aka 'Bombastic Bob' in case you wondered)

'Feeling with my fingers, and thinking with my brain' - me

'your story is so touching, but it sounds just like a lie'
"Straighten up and fly right"

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