This project demonstrates how to interface a relay module with an Arduino to control high-voltage appliances safely. The setup involves using a relay as a switch, allowing the Arduino to control ...

Connect one end of the micro USB cable to Arduino Nano board (Board2) and the other to PC/desktop to power on the receiver circuit and upload the Arduino code (relay_rx.ino). You can also connect a 5V ...

Connect the Buzzer to the Relay Module: Connect one end of the buzzer to NO (Normally Open) and the other end to COM (Common) on the Relay Module. Upload the Code: Open the Arduino IDE and create a ...