ray  wrote:
> Please forgive my ignorance on the topic, but would it be possible to
> use another PI with 'duino type device? Seems the duino would do the
> sampling and relay the results to the other PI.

You can do that kind of thing, but you're limited by the sample rates and
input range of the microcontroller, and also by the output bandwidth.  For
example you could make something to sample via an ADC pin and squirt out
over SPI, but you need to worry about not dropping samples because the
output is busy, and you also won't see any voltage that's too low or too
high.  For example in a power supply situation you might be worried about
negative voltages or spikes above the power rails, which the ADC won't
capture.  Also the ADC resolution is typically low if you're running at high
speeds.  This is where a proper scope comes in handy.

If it's all you have and you don't have major demands, by all means give it
a try.

Theo

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