This presentation outlines a Bluetooth-based home automation system using an Arduino Uno board. The system allows remote control of home appliances via an Android application. It uses an Arduino Uno microcontroller, HC-05 Bluetooth module, relays, and a relay driver. An Android app sends control signals over Bluetooth to the Arduino, which activates the relays to power devices. The presentation describes the hardware components, software, block diagram, advantages like remote monitoring, and a cost analysis. It aims to develop a low-cost home automation solution with remote control capabilities.

1. MINI PROJECT
PRESENTATION
KEE 354
SUBMITTED BY:
LALIT KAPOOR
1873520033
2ND YEAR-EE
SUBMITTED TO:
MR.MAYANK KUMAR
MR.SUNEEL KUMAR
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2. This is a presentation on
bluetooth based home automation
using arduino.
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3. CONTENTS
 Introduction
 Hardware Requirements
 Software Used
 Block Diagram
 Advantages
 Cost Analysis
 References
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4. INTRODUCTION
 To develop a Bluetooth based home
automation system with Arduino UNO Board
and an Android application.
 Remote controlled home automation system
provides a simpler solution with Android
application technology.
 Remote operation is achieved by any
smartphone/Tablet etc., with Android OS,
upon a GUI (Graphical User Interface) based
touch screen operation.
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5. Hardware Requirements
 Arduino UNO
 Bluetooth Module – HC-05
 5 V Relay
 Relay Driver- ULN2003
 Power Supply
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6. Arduino UNO
 The Arduino UNO is a microcontroller board
based on the ATmega328P.
 It has 14 digital input/output pins (of which 6
can be used as PWM outputs), 6 analog
inputs, a 16 MHz quartz crystal, a USB
connection, a power jack, an ICSP header
and a reset button
 Simply connect it to a computer with a USB
cable or power it with a AC-to-DC adapter or
battery to get started.
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7. The Board……
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8. Technical Specifications
 Microcontroller ----->ATmega328
 Operating Voltage ----->5V
 Input Voltage (recommended)-----> 7-12V
 Input Voltage (limits)-----> 6-20V
 Digital I/O Pins ----->14 (of which 6 provide PWM
output)
 Analog Input Pins-----> 6
 DC Current per I/O Pin----->40 mA
 DC Current for 3.3V Pin ----->50 mA
 Flash Memory 32 KB of which 0.5 KB used by
bootloader
 SRAM----> 2 KB
 EEPROM ----->1 KB
 Clock Speed ----->16 MHz
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9. Bluetooth Module HC-05
 For the communication
between mobile phone and
microcontroller Bluetooth
module(HC-05) is used.
 HC-05 is low power 1.8V
operation and is easy to use
with Bluetooth SPP (serial
port protocol).
 Serial port Bluetooth module have a Bluetooth
2.0+EDR (enhanced data rate), 3Mbps
modulation with complete 2.4GHZ radio
transceiver and baseband.
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10. Relay
 Relay is basically an
electromagnetic
switch which can
be turn on and off
by an applying the
voltage across its
contacts.
 In this project we used
a 5V 2-channel relay.
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11. How Relay Works?
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12. Relay Driver
 Relay is safely driven by
ULN2003 IC.
 Protect microcontroller from
relay kick back using
integrated clamping diodes.
 Has 7 high current Darlington
arrays each containing 7 open collector
Darlington pairs with common emitters
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13. Powrer Supply
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14. Software Used for Bluetooth Control
 The Android platform includes support for the
Bluetooth network stack, which allows a device to
wirelessly exchange data with other Bluetooth
devices.
 The application framework provides access to the
Bluetooth functionality through the Android
Bluetooth APIs.
 Control home electrical system using smart phone
with android application and Blue Switch Module.
 Blue Switch Module’s outputs to directly drive
loads like bulbs, Lamps, Sockets, Television, Fans
etc.
 For download and installation many apps are
available on Google Playstore.
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15. Contd…
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16. Software used for Arduino
Programming
 Arduino IDE.
 Programming
language used is
embedded
C/C++.
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17. Block Diagram
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18. Advantages
 It is a robust and easy to use system.
 There is no need for extra training of that
person who is using it.
 All the control would be in your hands by
using this home automation system.
 This project can provide the facility of
monitoring all the appliances with in the
communication range through Bluetooth.
 The schematic of Arduino is open source, for
the future enhancement of the project board
can be extended to add more hardware
features
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19. Cost Analysis
Hardware Price in Rs.(approx.)
Arduino Uno 350
Relay Driver 70
Relay 200
Power Supply Unit 200
Jumper Wires 100
Total 920
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20. References
 www.electronicsforu.com
 www.pantechsolutions.net
 https://harshsharmatechnicals.com/2018/01/3
0/code-and-circuit-diagram-for-home-
automation-system-using-arduino/
 Images from Google Images
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21. Thank You
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