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 ...

If so, remember to connect the VCC pin to 5V of the Arduino board to enable the control input pins IN1 and IN2. Also note at this point that, if you want perfect galvanic-isolation, do not link ...

In this Lora project, I have shown how to make the LoRa Arduino ESP8266 control relay using the RYLR896 LoRa module with real-time feedback. ... First, you have to connect the LoRa module with FTDI232 ...

The +5V supply line (VCC) of the module is linked to the 5V line of the Arduino. GND of the module is the common (0V) connection. The digital signal output to be detected (usually marked as DO in the ...

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 ...

It can be used for wireless communication. HC-05 Bluetooth module is used here as a receiver. Relay is used as a switch. The most interesting thing is one can use voice to control electrical ...