An Arduino shield for controlling four 12v relays. ... An Arduino shield for controlling four 12v relays. The schematic and PCB layout were created using KiCad. While it is designed for relays, it can ...

The Shield will be a typical Arduino UNO shield with all pins of Arduino UNO can be used along with extra pins for 3.3V, 5V, 12V and GND. Here the PCB is designed on the EasyEDA PCB Designer and ...

Place 2 layers of electrical tape on the top of the[Arduino's](/Arduino) (title=undefined) usb connector. This will prevent the relay shield from making contact. Do not operate voltage more than 35V ...

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 ...

The project is to create an Arduino Mega shield which be used to control the watering of plant automatically. ... A level switch is also used to know the level of the water tank. A relay is used to ...

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 ...