The sketch for this project is about 150 lines ... you can replace them with bigger LEDs or even a light bulb (paired with a relay for the Arduino Uno). Try a toggle switch instead, so you won ...

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 ...

By connecting multiple MFRC522 RFID readers to an Arduino Uno, she’s come ... would be connected to a relay to fire off whatever device you want. The Arduino sketch is also setup to give ...

What was your first Arduino program? Probably an LED blinker — that seems to be the “hello world” of microcontrolllers. You probably moved on to things a little more complicated pretty quickly.

I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security ... but I will talk about the ...

Then, chances are you already know what an Arduino is ... This means the Uno has more memory available for sketches, allowing you to upload bigger and longer codes. Aside from this, what makes ...