Home Automation Using Arduino and Bluetooth is an IoT project to control our home appliances like light, fan, cooler, etc. from a Smartphone. In this project, we use Arduino Uno and HC-05 Bluetooth Module and we give the command from our smartphone.
We also develop our Android App using MIT App Inventor to control Home Appliances using smartphones and Bluetooth.
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Component List
- Arduino Board
- Bluetooth Module Hc-05
- Relay Module 5v (4-Channel)
- Connecting Wires
Circuit Diagram For Home Automation

Pin Connections of Arduino with Bluetooth HC05 and Relay Module
Bluetooth HC-05 | Arduino Board |
---|---|
Vcc +5v | 5v |
GND | GND |
TXD | RXD |
RXD | TXD |
Relay Module | Arduino Board |
---|---|
Vcc +5v | 5v |
GND | GND |
IN1 | D8 |
IN2 | D9 |
IN3 | D10 |
IN4 | D11 |
Code for Home Automation Using Arduino and Bluetooth
Download Android App

Edit App in MIT App Inventor
If you want to edit the app according to your need by import below aia file in MIT App Inventor. You can change in design and codes or also can add more buttons according to your needs.
Enjoy the Home Automation Project. If you get any error or problem then feel free to ask us or comment, we always available to help you. Please give feedback to our work.