A silly suggestion perhaps but how about one of those cheap logic analysers
and an ADC that's supported by the Sigrok software?

On 13 Jun 2017 2:17 pm, "Jason White" <whitewaterssoftwareinfo@gmail.com>
wrote:

> I would like to find a cheap-ish USB ADC module with a sampling rate of
> >=3D2MS/s. For hobby use. Any input voltage range will work. Anybody know=
 of
> any?
>
> I am aware that RTL-SDR dongles are cheap and plentiful, but to my
> knowledge the lower frequency limit would prevent me from sampling at DC.
> I am aware of PCI ADC cards exist and might be better suited for this, bu=
t
> most seem to cost in excess of one grand, which is too expensive.
>
> Thanks,
> Jason White
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