Yup, just that simple circuit. Took me about 5 minutes with a
RatShack protoboard. No control, and the demo cycles so after a
while you really want to start tweaking. The other circuit is easy,
too, especially if you eliminate the amp and filter parts.
Mike, also assembling a dual band pass filter module
--- In
motm@yahoogroups.com, "charlesosthelder" <osthelder@n...>
wrote:
> Did both and placed the order with Brice!
>
> The demo circuit looks ridiculously simply. What control do you
have
> over that? Is there an input I missed or is the voltage varied?
If
> you got all of that from tying all those pins together, the
> entertainment factor alone rationalizes the 25 bucks!
>
> Chub
>