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 ...

An Arduino with an Xbee module that allows wireless communication using ZigBee protocols acts as the transmitter and receiver. A motor connected to relay wires causes the motor's actuator to push ...