Chris Loiacono wrote:
>
> Good points, Roman. Of course, I am always learning, and your experience is
> helpful - that's the kind of depth in understanding that's needed for a
> product to perform well because it's been well designed, not because all the
> coins landed on heads that day.

My thoughts exactly. :o)


> Admittedly, I've also become a bit obsessive about checking pins for things
> with my new Bitscope
> For example, I intend to
> play with Sean Alcorn's book circuit because now I can watch any effects on
> the PIC carefully before declaring it a good design.


Well, I don't think you will be able to
declare it a good design because that circuit
connects the AC mains direct to a PIC pin
via a resistor!!! The amount of appliances i've
fixed that failed from dirty mains and most
of those HAD filters and series resistors etc.

There's no way you can convince me it's smart
to couple AC mains into a PIC pin with nothing
more than one resistor to protect the PIC.
The cost of a capacitor and zener etc are only
a few cents.
-Roman

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