To see the latest newsletter, click here .   Greetings. Gather and decode data for your covert spy operations. New projects incl...

A loud and annoying alarm that will make telemarketers think twice about calling back!  This little box will give those pesky...

Change your voice over the phone in real time using a computer or digital processor.    This black box allows routing effects ...

A motion activation system that will control the digital camera shutter release button. This rig will take a photo anytime it s...

A sound activation circuit that will control the digital camera shutter release button. Figure 1 - This is the relay interface that co...