Make Your Own Tiny FM Spy Transmitter
Have you ever wanted to make your childhood dreams of being a spy come true? Make has a guide on how to create your own audio listening device that transmits an extremely weak FM signal over a distance of about 160 feet.
The basic project here requires fiddling with a soldering iron, building a circuit, and then setting up all sorts of things. The end result is a tiny transmitter that picks up sound and broadcasts it via FM. If you’ve seen the Veronica Mars movie , you understand how it works. This is a fun little project that aims to teach you how a wide variety of electronic devices work. Because of what it is, be sure to check local regulations before building it, especially since you are broadcasting on FM here. Go to Make for a complete guide.