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 ...

Arduino Relay Basics - How It Works and How to Use It. Posted: June 3, 2025 | Last updated: June 3, 2025. Hi, I'm Bill. I'm a software developer with a passion for making and electronics.

Read the State of a Button with Arduino – Tutorial #3. July 10, 2013 by P. Marian Comments 3. ... You can use other pin if you want to and you can even add extra circuitry to turn ON an LED or use a ...