Now a day’s so many useful technologies are coming out to make our life style more comfort, luxurious and secure. Power is getting wasted with present regulators using for controlling fan speed as they are using resistive method and some regulators have come up with phase angle control method to save power, with these we can change fan speed up to 4 to 5 levels. but with advancement in technology now we can control the speed levels up to 10 and more also to give more comfort to different users. In this project we will create an application to control the speed of the fan and to control some electrical appliances lights and water pump motors in home or office. Whenever we operate this application, it sends commands to our controlling system through blue tooth. At controlling system side we have Bluetooth module, micro controller and load controlling circuits, zero cross detector circuit to help the speed controlling method. Whenever this blue tooth module receives command from android application then it transfers this command to micro controller. Micro controller will control the respective loads depends upon the command it received

1. Smart regulator for Controlling Fan speed through Android mobile
Abstract:
Now a day’s so many useful technologies are coming out to make our life style more comfort,
luxurious and secure. Power is getting wasted with present regulators using for controlling fan
speed as they are using resistive method and some regulators have come up with phase angle
control method to save power, with these we can change fan speed up to 4 to 5 levels. but with
advancement in technology now we can control the speed levels up to 10 and more also to give
more comfort to different users.
Especially in mobile field so many application are being developed to give us more information
and entertainment .this project is designed with combination of two latest and most demanding
technologies that are Android and Embedded Systems
Android is a Linux based operating system designed primarily for mobile devices and it is a open
source .There are so many applications are already developed on Android and many applications
are being developed at free of cost for its users .
We can also develop our own customized applications with free of cost or with minimum cost
depends upon our requirements.
In this project we will create an application to control the speed of the fan and to control some
electrical appliances lights and water pump motors in home or office. Whenever we operate this
application, it sends commands to our controlling system through blue tooth.

2. At controlling system side we have Bluetooth module, micro controller and load controlling
circuits, zero cross detector circuit to help the speed controlling method. Whenever this blue
tooth module receives command from android application then it transfers this command to
micro controller. Micro controller will control the respective loads depends upon the command it
received
This is very safe and secure and also we can control many loads without getting confused by
adding names or images in the application.

3. BLOCK DIAGRAM:
Bluetooth module
M
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C
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N
T
R
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L
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E
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CRYSTAL
OSCILLATOR
RESET TRIAC
DRIVER
TRIAC
ZCD
AC
230V
AC
230V
BLOCK DIAGRAM:
Bluetooth module
M
I
C
R
O
C
O
N
T
R
O
L
L
E
R
CRYSTAL
OSCILLATOR
RESET TRIAC
DRIVER
TRIAC
ZCD
AC
230V
AC
230V
BLOCK DIAGRAM:
Bluetooth module
M
I
C
R
O
C
O
N
T
R
O
L
L
E
R
CRYSTAL
OSCILLATOR
RESET TRIAC
DRIVER
TRIAC
ZCD
AC
230V
AC
230V

4. ANDRIODPHONE

5. Software Tools:
 KEIL IDE for developing micro controller code
 ORCAD for designing schematics
 PROLOAD or FLASH MAGIC for dumping the hex file into controller
 Eclipse for developing Android application
Hardware Tools:
 AT89S52 Micro controller.
 MOC3021 for driving TRIACs.
 BT136 for controlling Fan.
 Zero cross detector
 Blue tooth module
 Regulated +5v Power supply.
Advantages:
 No need of separate remote or switch boards for controlling electrical appliances
 Protection from shock while operating and secured
 Easy to use, children, old aged people, physically challenged people can also operate
 Power saver.
Applications:
 Fan speed controlling
 Home automation

6.  Machines controlling system in industry
 Motor speed controlling systems, Light intensity controlling systems