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 ...

Arduino Uno and 4 Relay Module are connected. If we have those connections, we need to set the Relay Module's pins as: module[1].setPinNumber(5).setPinMode(OUTPUT); 1st relay (IN1) is connected to the ...

An Arduino nano and relay module with 4 relays (see picture above) was used to simulate and replace the guitar 3-step switch. The project for Arduino is in PlatformIoClamp15. Node-red was used to ...

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

RFID Door Lock System using Arduino Circuit Diagram. The below RFID Door Lock System circuit diagram represents how an Arduino, RFID Module, Relay module, Solenoid Lock, and LCD display are connected ...

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...