The Home Automation Project utilizing Arduino Uno and a 2-Channel Relay Module is a DIY project aimed at creating a smart home system that allows users to control various electrical appliances and devices remotely. This project combines the power of Arduino's microcontroller and relay modules to enable automation and control of household appliances using a mobile device. The main objective of this project is to provide users with a convenient and efficient way to control their home appliances, and also ensuring overall home security. By integrating Arduino Uno, with a 2-Channel Relay Module tasks such as turning lights on/off can be controlled also other activities can also be controlled using it.

Components Required

• Arduino Uno
• Bulb Holder
• Bulb
• Mobile Device
• 2 channel Relay Module
• Some wires
• Box

Circuit Diagram

Here's how the circuit would typically be set up:

Connect the Arduino Uno:

Connect the Arduino Uno's 5V pin to the positive rail of the breadboard. Connect the Arduino Uno's GND (ground) pin to the negative rail of the breadboard. Connect the Arduino Uno's digital pin 2 to the "IN1" (input) pin of the 2-channel relay module. Connect the Arduino Uno's digital pin 3 to the "IN2" (input) pin of the 2-channel relay module.

Connect the Power Supply:

Connect the positive wire of an external power supply (e.g., a 12V DC power adapter) to the positive rail of the breadboard. Connect the negative wire of the external power supply to the negative rail of the breadboard.

Connect the Relay Module:

Connect the "VCC" (power supply) pin of the relay module to the positive rail of the breadboard. Connect the "GND" (ground) pin of the relay module to the negative rail of the breadboard. Connect the "JD-VCC" (power supply) pin of the relay module to the positive rail of the breadboard. Connect the "GND" (ground) pin of the relay module to the negative rail of the breadboard.

Connect the Fan:

Connect the positive terminal of the fan to one of the relay module's "COM" (common) pins. Connect the negative terminal of the fan to the relay module's "NO" (normally open) pin associated with the fan. Connect a wire from the relay module's "GND" (ground) pin (preferably a separate one) to the negative rail of the breadboard.

Connect the Bulb:

Connect the positive terminal of the bulb to one of the relay module's "COM" (common) pins. Connect the negative terminal of the bulb to the relay module's "NO" (normally open) pin associated with the bulb. Connect a wire from the relay module's "GND" (ground) pin (preferably a separate one) to the negative rail of the breadboard.

Connect the External Power Supply:

Connect the positive wire of the external power supply to the relay module's "VCC+" pin. Connect the negative wire of the external power supply to the relay module's "GND-" pin.