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 ...
Engineers and developers looking for a programmable logic controller (PLC) might be worth checking out the new CANADUINO Arduino MEGA 2560 compatible PLC which has been created by Universe Solder ...