The Arduino sketch reads the data from the potentiometers and sends the cursor position and switch clicks to your computer through the USB cable. ... (paired with a relay for the Arduino Uno).

By connecting multiple MFRC522 RFID readers to an Arduino Uno, ... The Arduino sketch is also setup to give “hints” to ... and manual override can be used to trigger the attached relay.

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 ...

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 p… ...

Rob Cai has used and Arduino Uno development Board together with an old VGA display to create an awesome digital representation of the iconic Etch-a-Sketch mechanical drawing toy invented by ...

The relay can be used to open a door lock and if you need a louder alarm then you can replace the small buzzer with a high power siren. I will not talk about the RFID reader because you can find a lot ...

It's programmed using the Arduino IDE, so most of the sketches built into the software can be tested with the Nano. The board also operates at 5V, similar to most Arduino boards.