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 ...
While the Arduino organisation has been making industrial single-board computers for a while, it has finally taken the plunge and produced a complete industrial product – and industrial controller ...