Connect VCC and GND to the appropriate Arduino pins.
[ Arduino Uno ] [ 4 Channel Relay Module ] [ Load Side ] Pin 2 --------------------------> IN1 --- NO1 ------> (Lamp 1) ---> [AC Neutral] Pin 3 --------------------------> IN2 |--- COM1 ----> [AC Live] Pin 4 --------------------------> IN3 --- NC1 (Unused) Pin 5 --------------------------> IN4 5V --------------------------> VCC GND --------------------------> GND 3. Writing the Control Code --- 4 Channel Relay Module Library For Proteus
The first step is to download the library files. Several online resources provide these libraries for free. You can search for dedicated sources like the "Electronics Tree" website or use broader platforms like GitHub. Many tutorials and forum posts also provide direct links to a Relay Modules Library zip file that includes the necessary components. We'll use this downloaded zip file for the installation in the next step. Connect VCC and GND to the appropriate Arduino pins