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 ...

Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — ...

If you want to make your own custom board, Make shows you how in a three-part series. The Make build here uses the Really Bare Bones Board schematic as influence to make a low-power, tiny Arduino ...