555 Timer Blinky
In this project, you’ll learn how to solder together a battery-powered, 555 Timer-driven blinky toy.
AA Battery Holder
Covert Listening Book
Connect a shirt pocket “amplified listener” hearing aid with an in-car FM transmitter, and you’ve got a wireless bug. Tuck them inside a hollowed-out book with the mic concealed by the dust cover, and you’ve got a covert listening device that you can leave lying around or on a shelf near a surveillance target. Then […]
A Simple Trip Wire
With a few easy steps build a trip wire!
