The use of transistors for switching things ON and OFF is a key feature of proper hacking. The ability for bipolar transistors to turn things ON and OFF is one of the less known uses while transistors ...

Last week I explained how to use a motion sensor to trigger an event with an Arduino. The event we triggered was a simple blinking of an LED. You can do a lot with a bunch of LEDs if you use your ...

If you have a question about transistors, Brown Barge Middle School eighth-grader Alexander Pope probably can answer it. Alexander's project, "Can You Get Your Transistors In Line?," recently captured ...