The WiFi Relay Shield is an Arduino compatible module that provides an easy way to control high voltage loads thanks to 4 independent channels equipped with photo-coupled mechanical relays ...

The Arduino Relay Shield allows your Arduino driving high power loads. The Arduino Relay Shield allows your Arduino driving high power loads. The Shield features three relays, each relay provides 2 ...

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 system. The relay can be used ...

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 ...

IN - This pin is also called the control pin because it is used to control the output of the relay. COM - is connected to the device you intend to connect. NC - terminal is connected to the COM ...