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 ...

This is a fully completed version of the Relay Newsfeed tutorial application. It serves as a working reference implementation that demonstrates the APIs, concepts, and principles of Relay in a ...