On 8/29/06, Wouter van Ooijen <wouter@voti.nl> wrote:
> >> http://www.thinkgeek.com/gadgets/electronic/79be/
> > That toy is $25.  Who here thinks they can come up with the cheapest
> > work-alike?
>
> for extra donut-points: the smallest? A 9V battery is for sissies, a
> real man uses two 1.5V cells, or one, or just a potato with two metal
> strips.

 Quite difficult because the piezo is able up to 120dB noise at 10cm away.
It need power for this, not only lemons...
:)
greetings,
Vasile
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