Multi-Mode Timer

No one can call themselves an electronics hobbyist unless they have built a timer. There are several designs using a variety of new and sometimes old circuits.

It's like magic - only it's not. It's SCIENCE. With the Two Potato Clock, you can actually power a digital clock with common household items, such as potatoes, plants, and even soda pop! A great educational tool, a fantastic toy, the Two Potato Clock is sure to stimulate budding young scientists everywhere.

Change your voice from male to female or vice versa. Add a vibrato sound to voice like the sound used to protect witnesses or anonymous rats on TV.