Set the start pin and number of relays at the top of the sketch; Flash this sketch to the Arduino; Connect to the Arduino's serial port with 9600 baud; Issue commands like 'r31' to turn relay 3 on, ...

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 relay module will need 5V from Arduino to power up and will get input from four different digital pins of the Arduino. Now let’s connect the relay module to your home appliance. Take the positive ...

No-code prop and control panel to command relays with Arduino Mega 2560 or STM32 Nucleo 144 or Raspberry Pi board. For either the Arduino Mega or the Raspberry Pi, you just have to install the code ...

In this project we control direction and speed of a 24v high current motor using Arduino and two relays.No power switches are needed for this circuit, just two push buttons and in Potentiometer to ...

Arduino Due and the Ethernet shield W5100 have the microcontroller, which has enough GPIO pins for the 16 channel relay , or 2x 8-channel relay. Since Due does not have everyone, the prepared source ...

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 ...