Build Your Own Gotcha Gadgets
Science meets immaturity in this top-selling title with a set of customizable electronic gizmos, along with a book of games, pranks, and jokes.
Klutz-clear explanations of the electronic circuitry accompany step-by-step instructions for how to wire (and rewire) your own door alarm, motion sensor, light sensor, and push-button device. It’s like a science fair project with the soul of a whoopee cushion. 9-volt battery not included.
Comes with a 32-page book of science and sneakiness, 1 electronics module with speaker, LED, photo detector, contact switches, 1 alligator clip, 1 gadget dock, and 4 double-sided gadget covers.