This is kinda of weird, but I was wondering if anyone knows a good website that I can get Schematics/circuit diagrams (same thing) for types of electronic devices that are popularly called “spy gadgets”? Things such as Micro FM Transmitters, Voice Changers, etc. Also something like a keypad lock would be appreciated.
Looking for gadget reviews?
10 Buttons PIC Touch-Pad with BCD Output