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 ...

Oh sure, it’s pretty cool to display your current gear selection on a little LCD screen using an Arduino ... hardware and the code of the project in Wokwi, which lets him make changes and ...