Light Up Your People

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Infrared diodes and detectors make things fun and magical. We are used to touching or flipping a switch to turn on lights. A simple transistor circuit with an infrared detector and the lights change with a wave of your finger. My circuit boards are simple and all of the parts... Read more »

Light Up Halloween

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You can use infrared diodes to light up your people when you get close to them. When your transmitter activates their detector their lights light up, and their transmitter lights up yours. When someone touches your magic spot (your detector) your spot lights up and their thing lights up. It... Read more »

MotorShield Kit

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Arduino is a great starting point for electronics, and with a motor shield it can also be a nice tidy platform for robotics and mechatronics. The MAKE MotorShield Kit, designed by Adafruit Industries in partnership with MAKE, is a full-featured motor board that can power many simple to medium-complexity projects.... Read more »

Geiger Counter Kit

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Commercial Geiger counters can cost hundreds of dollars. Build your own at a fraction of the price! This easy-to-solder kit can be built in an evening and it works just like you think it would; clicking and blinking in the presence of radiation. Just follow the instructions here to build... Read more »