This project proposes a system to control electronic home appliances using an Android device through Bluetooth. An Android application would be installed on a mobile phone or tablet to send commands via Bluetooth to a microcontroller. The microcontroller is interfaced with electrical loads like lights and motors and would switch the loads on and off based on the commands received from the Android device. The system aims to provide remote control of appliances using a smartphone without needing to be physically present near the control unit.

2. PROJECT TITLE: BLUETOOTH CONTROLLED
ELECTRONIC HOME APPLIANCES
• Group members
• Naseem Abbas 2KX3-EE-114
• Ahmad Ali 2KX3-EE-166
Presented To :
Mam Zunnera Umer

3. HOME AUTOMATION THROUGH ANDROID
MOBILE

4. CONT..
• This project provides the solution to this problem by integrating all
the electrical appliances to a control unit that can be operated by an
Android application device (Android smart phone or Tablet).
Proposed system controls the electrical loads based on the data
transmitted by the Android device. An android application should be
installed in user’s mobile or tablet to control the electrical loads.
Using this android application user can send the commands to the
Bluetooth module to control the electrical loads. Wireless technology
used in this project is Bluetooth. It can also be called as “Android
based Home Automation System” or “Remote Password Operated
Electronic Home Appliances Control System”

5. REMOTE PASSWORD OPERATED ELECTRONIC
HOME APPLIANCES CONTROL CIRCUIT PRINCIPLE:
• In this project Bluetooth module is interfaced to 8051
microcontroller. This Bluetooth receives the commands from
the Android application device using wireless communication.
The program which is written to the 8051 microcontroller
communicates with Bluetooth module serially to receive the
commands. Microcontroller switches the electrical loads
automatically based on the commands received from the
Bluetooth.

6. BLOCK DIAGRAM

7. CIRCUIT DIAGRAM:

8. CIRCUIT HARDWARE REQUIREMENTS:
• at89c51 controller
• 8051 programming board
• Programming cable
• DC battery or 12V,1A adaptor
• 16×2 LCD
• Bluetooth module
• 5V Relays – 2
• Lamp
• DC Motor
• BC 547 Transistors – 2
• 330 ohm resistors (1/4 watt) – 2
• Reset circuit
• Crystal circuit
• 5V DC power supply circuit
• Connecting wires

9. REMOTE PASSWORD OPERATED HOME
APPLIANCES CONTROL PROJECT ALGORITHM:
• Initialize the LCD and UART protocol.
• Now read the data from Bluetooth module.
• Display the received data on LCD.
• Compare the received string with predefined strings and
accordingly switch the electrical loads.
• Display the status of electrical loads on LCD.

10. HOW BLUETOOTH CONTROLLED ELECTRONIC
HOME APPLIANCES CIRCUIT WORKS?
• Write the program to the project in keil software and create .hex file.
• Burn program to the controller with help of flash magic.
• Now give the connections as per the circuit diagram.
• While making the connections, ensure that there is no any common
connection between DC and AC supplies.
• Use 5V power supply circuit to provide regulated 5V DC to the
microcontroller.
• Switch on the both AC and DC supplies.
• Now relay output pins gets 230v so do not touch the load connected
pins.
• Install Bluetooth apk file in android device.

11. BLUETOOTH CONTROLLED ELECTRONIC HOME
APPLIANCES PROJECT APPLICATIONS:
• This project is used to control the various electrical appliances
from the remote area.
• Using this project we can control all the loads using a single
remote and a control unit.
•Limitations of the Circuit:
• In this project the distance between control unit and android
device is limited.

12. THANK YOU . . .