On Fri, 29 Mar 2019 18:48:20 +0200
Tauno Voipio  wrote:

> Hundreds of inputs may mean that Pi is simply
> too small alone to get them in. The data may be
> coming farther than a couple of inches from the
> processor, and it needs precautions in order
> not to blow up the whole thing on electrical
> transients.
>
Use sacrificial Arduinos to handle the inputs and deliver nice clean
logic to the Pi.   :-)

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