In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...

The Arduino development board has grown in popularity over the last few years and has spawned a myriad of interesting projects such as auto-lacing shoes, The EyeWriter 2.0, and the Mobile Dance Stage.

If you’ve messed with Arduino, the inexpensive micro controller, you’ll know that you can run a small motor or turn an LED on and off, but anything else – powering a pump, turning on a light bulb – ...