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My wife’s cousin, the break-dancing radiologist, broke the microphone clip off my mic stand while singing karaoke last Thanksgiving. I had another micropohone clip and replaced it so we could continue with karaoke, but I decided to keep the broken pieces of the old clip for the junk box because... Read more »

Snap Circuits is an educational toy that teaches electronics with solderless snap-together electronic components. Each component has the schematic symbol and a label printed on its plastic case that is color coded for easy identification. They snap together with ordinary clothing snaps. The components also snap onto a 10 X... Read more »

The Spy Video Trakr is a remote controlled robot equipped with a microphone and color video camera, speaker, a near infrared LED for night vision, an SD memory card slot for recording audio/video and 8MB of on board memory for storing downloadable and user designed programs. The remote control unit... Read more »

In this article you will learn how to build a laser tripwire and alarm out of Snap Circuits. You will build two circuits: the laser tripwire circuit and the alarm circuit. The alarm is a very simple two-transistor oscillator that is switched on by the relay in the laser tripwire... Read more »

In this article you will learn how a single-pole single-throw switch works. You will learn how to build a simple circuit and to understand Direct Current (DC). I used Snap Circuits to demonstrate this circuit because it is easy for you to understand what’s going on in a circuit as... Read more »


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