An easy to build transmitter that can send sounds from a room to an FM radio.

Convert any camcorder for use as a stealthy portable night vision system

Spy over great distances by combining a digital camera with an optical magnifier.

Interface a GPS module to a microcontroller and decode the NMEA data strings.

Interface a GPS module to a microcontroller and record location data to memory.

Create a handheld infrared illumination system using a flashlight and common materials

Experiments using high power infrared laser diodes and modules for night vision illumination.

Eavesdrop on distant conversations using an invisible laser beam and light receiver.

Create a high power long range night vision illuminator from a large array of infrared LEDs

A motion activation system that will control the digital camera shutter release button.

A stealthy infrared night vision system that can see in complete darkness.

Decode DTMF signals live from the phone system or from previously recorded audio.

Change your voice over the phone in real time using a computer or digital processor.

A versatile keypad alarm system that can be portable or permanently installed.

Extend the range of an infrared LED based illuminator by using higher current pulses

Build a simple ring light infrared illuminator that will add night vision to a spy camera

A sound activation circuit that will control the digital camera shutter release button.