DIY Smart Home Automation

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DIY Smart Home Automation using Android
by abhishek7xavier on January 11, 2014

Table of Contents
DIY Smart Home Automation using Android . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1

Intro: DIY Smart Home Automation using Android . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

Step 1: What we proposed : The solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

Step 2: BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

Step 3: The Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

Step 4: 5 PCB FOR THE PROJECT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

File Downloads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Step 5: Microcontroller code and algorithm used !! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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File Downloads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

Step 6: The Android Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
File Downloads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Related Instructables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Advertisements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Author:abhishek7xavier Abhishek
I am an electronics enthusiast,an inventor,a dreamer and a bounteous human.I believe that the purpose of life is to learn and make something out of it that
helps/encourage/inspire/augment the humanity.Being a human if you cannot help others, then you are not doing good in life.Life is a one time opportunity so
live it generously.To the engineering side I love making electronics projects,crafts,programming and embedded systems technology.

Intro: DIY Smart Home Automation using Android
Smart Home Automation let the user to control the home from his or her phone and assign actions that should happen depending on time or other sensor readings
such as light, temperature or sound from any device in the Home Automation network.
WHAT CAN HOME AUTOMATION DO?
1.
2.
3.
4.
5.
6.
7.
8.

Increase your independence and give you greater control of your home environment.
Make it easier to communicate with your family.
Save you time and effort.
Improve your personal safety.
Reduce your heating and cooling costs.
Increase your home’s energy efficiency.
Alert you audibly and visually to emergency situations.
Allow you to monitor your home while you are away.

Features of our project:
1. Control upto four home appliances wirelessly (expandable based on free IO pins).
2. Monitor status of your home like temperature inside and outside of your home,light intensity inside and outside of your home, motion (presence) on the main
entrance,LPG leak in the home and status of you main door.
3. Open/close your main door electrically and wirelessly.
4. As the android application is password protected ,it automatically adds security to your home as it can be controlled by the user only.
5. Automate your indoor lightening, outdoor lightening and fan/AC to switch ON/OFF automatically when the light intensity and temperature conditions exceed the
programmed threshold values.(This feature, we named it “SENSOMATE”).
6. It automatically monitor your home against LPG leaks and cases of fire.If it detects something wrong, it automatically switches off all home appliances instantly
and immediately opens the door to let the LPG/fire exhaust off your home.
7. Has a “SLEEP MODE” , once activated will switch your light off and program the motion sensor and door sensor to raise alarm if anything goes wrong.
8. At last, as it uses Bluetooth the user can use the android phone within a range from 10-100m .
Also, there are many disabled and aged people who always depends on others for their basic necessities . This application gives them a helping hand . With this
application, user can use the electrical appliances in his room without moving anywhere or without seeking anyone's help, the user himself feels a little independent.With
this application the user can monitor and operate home appliances, make themselves feel secure with the help of motion sensor, give alarm to the guardian at times of
emergency, check indoor and outdoor temperatures - or use this option as a digital thermometer, Enable/Disable Automatic AC control, Enable/Disable Automatic Room
light control and monitor windows/doors.
[The project shown here is more a prototype,but it is fully tested and working and ready to be implemented in realtime]
[Please vote for me,if you like my work.]

http://www.instructables.com/id/DIY-Smart-Home-Automation/

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Step 1: What we proposed : The solution
Home automation can allow you to make the things that you need and do in your home easier to accomplish. Perhaps you want to control your security system? Or,
perhaps you want to voice automate the lights in your home so that you can get into bed and then turn the lights out. Or, perhaps you want to be able to control your
sound system from any place in your home. No matter what it is you are looking to accomplish, home automation products are probably available to help you to make it
happen. A typical home automation system allows one to control house hold appliances from a centralized control unit. These appliances include lights, fans, air
conditioners, television sets, security cameras, electronic doors, computer systems, audio/visual equipment, etc. These appliances usually have to be specially designed
to be compatible with each other and with the control unit for most commercially available home automation systems.
The project Smart Home Automation, demonstrates a system that can be integrated into a home/building’s electrical system and allows one to wirelessly control lights,
fans, and turn on or off any appliance that is plugged into a wall outlet. The system can be controlled from a Bluetooth or Wi-Fi enabled device such as a mobile phone or
laptop, while a microcontroller powered box act as the server. Thus the installation cost and hardware cost is kept to a minimum as most users already own the requisite
hardware such as a mobile phone and desktop PC.
A Bluetooth dongle or a standard Wireless Access Point is used to provide connectivity between the server and the mobile device. The system is capable of detecting
when the user enters or leaves the room by measuring the change in environmental thermal equilibrium, and can accordingly turn on or off appliances such as lights and
fans. The power supply for each appliance is wired through an electromechanical relay. A number of relays are used depending on the number of appliances to be
controlled. All the relays are controlled by a microcontroller. The microcontroller based host acts as the mmain server.. The server can also receive connections over the
internet and can be controlled from a remote location. This opens up many possibilities. For example, one could remotely turn on the air conditioner from the office before
leaving so that the room is cool before reaching home. Home automation can range in complexity from the simple gadgets and gizmos that provide control over individual
components to individual home sub-systems and integrated whole house systems.
The project:
1.
2.
3.
4.
5.

Use five sensors to monitor the state of home namely temperature, light intensity,motion, LPG leak and door/window status.
Use a host device that will be mounted on wall and will have connection to all your home appliances like lights, fans, etc and to all the sensors.
Use “ANDROID” based smartphone, tablets as the user interface and control panel.
The ANDROID client will use bluetooth to wirelessly connect to the host device.
Simply logging in the android application will grant access to the user to control and automate his home wirelessly.

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Step 2: BLOCK DIAGRAM
The block diagram of the project is shown if figure above. The main heart of the project that do all data processing and decision making is the microcontroller. Here it
serves the purpose of data acquisition from the sensors and comparing then with the programmed values stored in the microcontroller’s EEPROM and then actuating the
devices accordingly. A 16x2 character LCD is used for displaying the messages, appliance state and sensor readings. It is directly connected to the microcontroller in 4bit addressable mode. Whenever a new action or event is raised like fire alarm, LPG leak, etc it is displayed on the LCD too. Next we have the Bluetooth UART module
connected to the serial port of the microcontroller. It act as an access point for the android client on the another side and logically it act as complete serial cable
replacement for the serial port. The data is exchanged serially between the two devices. A LINK status pin to the microcontroller from the Bluetooth UART tells it that the
android client is successfully connected to the host. Next, to control two light one inside and other outside the home , a fan/AC and a television we have four relays
connected to the microcontroller via the NPN transistor based buffer circuit. The relays consume a lot current while being activated and the microcontroller on any pin can
source only 20mA of current so a buffer circuit is utmost indispensable between the relay and the controller.
There are five types of sensors used in the project those are being directly interfaced to the microcontroller. To sense the light intensity we use two LDR sensors that is
light dependent resistors interfaced to the ADC input of the microcontroller. To sense the temperature we used two solid state semiconductor temperature sensors from
analog devices also interfaced to the ADC input of the microcontroller. To sense the LPG leak in the home we used the MQ-5 LPG sensor and it is interface to the ADC
input of the microcontroller. After them, we used a hook switch to sense the door whether it is opened or closed. This sensor is connected to the digital input of the
microcontroller pulled up externally. To sense the presence and motion we used the PIR (Pyroelectric InfraRed) sensor that has a digital output and it is also connected to
the digital input of the microcontroller pulled up externally. The main door is driven by the geared DC motor and as it has to close and open the door, it has to be moved
bi-direcionally. To do so, we used the NPN transistor based H-bridge bidirectional motor driver circuit interfaced to the digital output of the microcontroller. The
microcontroller can digitally control the motion and direction of the motor to open and close the door. A software feedback is implemented between the motor and the
door hook sensor output so that when the door reaches its max position and is being shut the motor stops driving the motor to prevent any damage.

Step 3: The Circuit Diagram
The circuit diagram of the project is shown above in figure above. The starting from the power supply section, we have the 9V AC input from the secondary output of the
transformer. This is the fed to the bridge rectification section that converts AC supply into DC supply. This is done by four 1N4007, 1 A diodes in bridge configuration.
Then on the DC output of this section a large capacitor (1000uF, 16V) and another small 100nF capacitor is there to filter the DC supply and remove off all AC
components from it. This is because here we are operating pre digital circuitry that fails to operate on unregulated and unfiltered supply. After the DC supply is being
filtered as it is unregulated is turned into a regulated 5V DC supply using LM7805 regulator. Again after that a small 100nF capacitor is there to filter the regulated DC
supply. A regulated 3.3 volt supply is also derived from another regulator that is the UA78M33 whose input is fed from the regulated 5V output of the LM7805 voltage
regulator. Regulated 5 volt supply is needed to drive the microcontroller, relays and all the sensors, while a regulated 3.3 volt is required by the Bluetooth UART module
to operate. After that the regulated supply is fed to all the sensors ,relays and the microcontroller.
There are five types of sensors used in the project those are being directly interfaced to the microcontroller. To sense the light intensity we use two LDR sensors that is
light dependent resistors interfaced to the ADC input of the microcontroller. One pin of the LDR is connected to Vcc via a 330K resistor and other tied to ground. This
creates a potential difference in between of the circuit and is fed to pin A.3 and A.2 of the microcontroller respectively. To sense the temperature we used two solid state
semiconductor temperature sensors from analog devices also interfaced to the ADC input of the microcontroller. The two pins are connected to the power supply to
power the sensors and the third pin is the output pin is connected to the ADC7 and ADC6 channel of the microcontroller. To sense the LPG leak in the home we used the
MQ-5 LPG sensor and it is interface to the ADC5 channel input of the microcontroller. When an LPG leak is detected the output of the LPG sensor decrease gradually

http://www.instructables.com/id/DIY-Smart-Home-Automation/

and that is being sensed by the ADC of the microcontroller. After them, we used a hook switch to sense the door whether it is opened or closed. This sensor is connected
to the digital input pin D.7 of the microcontroller pulled up externally.Whe the door is closed, the hook switch is closed and the output is logic low as it bypasses the
ground. When the door is open, the hool switch is also open and it bypasses logic1 throught 10k resistor to the output. To sense the presence and motion we used the
PIR (Pyroelectric InfraRed) sensor that has a digital output and it is also connected to the digital input (pinA.4) of the microcontroller pulled up externally. When a motion
is detected ,the output goes high for a few seconds and comes back to low in case of absence of motion. The main door is driven by the geared DC motor and as it has to
close and open the door, it has to be moved bi-direcionally. To do so, we used the four BC107 NPN transistor based H-bridge bidirectional motor driver circuit interfaced
to the digital output of the microcontroller. The microcontroller can digitally control the motion and direction of the motor to open and close the door. To display messages
and sensor values a 16x2 character LCD is used in 4 bit mode to portB of the microcontroller.
The H-bridge circuit is used to drive a DC motor in both the directions. It can also use relays to function but here we used the BJT based one. It comprises of four BC107
NPN transistors as shown in figure 2. The two transistor T1 and T2 are in series and those T3 and T4 are also in series. The base of all four transistors are protected y
current limiting resistors R1-R4. The prevent damaging the transistors. The base signals of T1 and T4 are the same and that of T3 and T2 are also the same. The
operation is simple that when Sig1 is logic 1 and Sig 2 is logic 0, it will turn ON T1 and T4 and will turn the motor in one direction same if we reverse the input logics, the
motor will go in reverse direction. All four transistors are used as simple switches here.

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Step 4: 5 PCB FOR THE PROJECT
The PCB for the project is designed in EAGLE layout designer. The schematic is designed in the schematic editor and the board is designed in the board editor. The
simple TONER TRANSFER METHOD is used here to develop PCB at home.

http://www.instructables.com/id/DIY-Smart-Home-Automation/

File Downloads

PCB.zip (158 KB)
[NOTE: When saving, if you see .tmp as the file ext, rename it to 'PCB.zip']

Step 5: Microcontroller code and algorithm used !!
The algorithm that is driving the code on the microcontroller is a multi-tasking algorithm. It has three basic functions, first is the main function to read all sensors and
actuate the actuators according to the programmed threshold values. Next is the timely updating of the LCD display and the transmission of encoded string serially to the
android client if the android client is present. The last task is to check the input serial buffer for commands from the android client and process them accordingly.
When the microcontroller is powered up it reads the eeprom for recovery of all programmed sensomate values and device states that whether which device was ON/OFF
the last time the power failed. Then after recovery, it read all the sensor readings and process them accordingly in meaningfull values. After that the microcontroller
checks the sensor readings against the programmed sensomate values and turns ON/OFF the appliances accordingly. The checking of fire occurance and LPG leak is
done here in this main loop only. If there is a sign of fire or LPG leak, the microcontroller automatically switches off all the appliances and open the door to exhaust the
gases and reduce emergency cricality. The sleep mode is also processed here in this loop. If the sleep mode is activated and motion is detected or someone open the
door, the alarm fires and alert the user.
In the second loop, the microcontroller runs timer0 in interrupt mode and approx every 1.5 seconds it updates the LCD for sensor values and device states. The presence
of the Bluetooth link is also displayed here. Also the microcontroller sends the encoded system status in a string serially to the bluetooth UART if the link is present. It is
done every 0.8 second approximately. This loop is repeated infinitely as that of the main loop.
The third section programs the serial receive complete interrupt and thus whenever a serial command is received from the android client, it processes it here and actuate
the command. This is again an infinite procedure and microcontroller keeps on sensing the arrival of new command.
The transmission and reception of commands to and from the android client is done wholesomely in ASCII code.

http://www.instructables.com/id/DIY-Smart-Home-Automation/

File Downloads

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Microcontroller code_FINAL.zip (45 KB)
[NOTE: When saving, if you see .tmp as the file ext, rename it to 'Microcontroller code_FINAL.zip']

Step 6: The Android Application
The application for the android smartphone is wriiten completely in BASIC4ANDROID . BASIC4ANDROID is a BASIC high level language. Basic4android is a simple yet
powerful development environment that targets Android devices.
Basic4android language is similar to Visual Basic language with additional support for objects.Basic4android compiled applications are native Android applications, there
are no extra runtimes or dependencies. Unlike other IDEs Basic4android is 100% focused on Android development. Basic4android includes a powerful GUI designer with
built-in support for multiple screens and orientations. No XML writing is required. You can develop and debug with the Android emulator or with a real device (USB
connected or over the local network). Basic4android has a rich set of libraries that make it easy to develop advanced applications.
The android application so designed is fully applicable of controlling your home. There are a total of six screens including the screen containing the authors name. The
application is a little bit voice acknowledged. Whenever you click on the help menus, it tells you about the particular with the voice acknowledgemnt too.
FIG 1 This screen displays a boot animation on startup when you click the Smarthome application icon. Along with the animation, an audio message and welcome can be
heared in the background.
FIG 2 This is the manual appliance control screen. Here you can manually turn ON/OFF each appliance individually or can simultaneously switch all ON/OFF in one go.
The particular device so controlled manually will disable its sensomate feature automatically. The button label shown in blue shows the status of the device.
FIG 3 This is the sensors monitoring window. From here you can see all the sensor readings and also save them in a text file in the ROOT/smarthome folder of your
android smartphone. You can activate/deactivate the sleep mode from here only.
FIG 4 With this window ,you can check the status of your door whether it is open/close. You can also open or close the door from here.
FIG 5,6 From this Sensomate (Sense and automate) window, you can program the threshold values for your two lights and fan. You can also program your motion sensor
to raise an alarm if it detects a motion.
FIG 7 This is the settings window. From here you can turn Bluetooth ON/OFF manually. You can manually connect to the android host from the paired list. You can
change the login password here and program the threshold value for the fire alarm to raise.
FIG 8 This screen displays the author involved in developing the application.
The android app currently supports 320x240 resolution screens ,but with a simple designer code script it can be modified to suit any screen size.

http://www.instructables.com/id/DIY-Smart-Home-Automation/

http://www.instructables.com/id/DIY-Smart-Home-Automation/

http://www.instructables.com/id/DIY-Smart-Home-Automation/

File Downloads

App.7z (6 MB)
[NOTE: When saving, if you see .tmp as the file ext, rename it to 'App.7z']

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Comments
37 comments Add Comment

anand6565 says:

Mar 2, 2015. 12:21 PM REPLY

I done this project almost but there is no communication between Bluetooth module and microcontroller plz help
I m using hc05 module

magic eco says:

Sep 20, 2014. 3:08 AM REPLY
hi friend i like your project...i have bluetooth module which have 6 pin ,rxd , txd ,vcc and gnd pin understand but "en" and "state " pin where to connect.in
your circuit diagram pin no-17,PD3(INT0) where to connect in bluetooth module?..plz help....
i almost done this project..

abhishek7xavier says:

Sep 30, 2014. 10:25 PM REPLY

Can you tell me the exact model number of the Bluetooth module you are using??

mnopamin says:

Nov 7, 2014. 6:13 AM REPLY

I'm having the same problem. Please help
how can use the hc-05?

kingstars009 says:

Feb 25, 2015. 6:46 PM REPLY

You have successfully hc-05 module?

magic eco says:
Bluetooth module is hc-05,

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Oct 5, 2014. 2:23 PM REPLY

Vincent20130401 says:

Nov 9, 2014. 8:15 AM REPLY
I've done this things like this before,the Bluetooth control. You can try the simple way. Your module can just use the rxd, txd,vcc,and gnd, connected to
the controller's pin: txd,rxd,vcc,and gnd. That's enough. And when the Bluetooth data come, the controller interrupted by the uart data.

kingstars009 says:

Feb 25, 2015. 5:09 AM REPLY

how can use the hc-05? please help me

FaXiwaheed says:

Feb 24, 2015. 4:35 AM REPLY

OUTSTANDING WORK! I am working on a similar project and this guide helped me alot :)

dharmeshp says:

Jan 16, 2015. 11:47 PM REPLY

i want to pcb layout abhishek sir....can u give me plssss
and which BT module used in this project??

nithinkrkalpetta says:

Jan 16, 2015. 7:26 PM REPLY
Hai abhishek sir _ I need some clarification about Bluetooth module connecting, Can I connect HC06 Bluetooth module in this project ??? What is the
purpose of pin no-17,PD3(INT0) where to connect in Bluetooth module ?.. Please help.
Waiting for your valuable reply....

nithinkrkalpetta says:

Jan 16, 2015. 7:26 PM REPLY
Hai abhishek sir _ I need some clarification about Bluetooth module connecting, Can I connect HC06 Bluetooth module in this project ??? What is the
purpose of pin no-17,PD3(INT0) where to connect in Bluetooth module ?.. Please help.
Waiting for your valuable reply....

nithinkrkalpetta says:

Jan 16, 2015. 7:26 PM REPLY
Hai abhishek sir _ I need some clarification about Bluetooth module connecting, Can I connect HC06 Bluetooth module in this project ??? What is the
purpose of pin no-17,PD3(INT0) where to connect in Bluetooth module ?.. Please help.
Waiting for your valuable reply....

nithinkrkalpetta says:

Jan 16, 2015. 7:26 PM REPLY
Hai abhishek sir _ I need some clarification about Bluetooth module connecting, Can I connect HC06 Bluetooth module in this project ??? What is the
purpose of pin no-17,PD3(INT0) where to connect in Bluetooth module ?.. Please help.
Waiting for your valuable reply....

RezaT2 says:

Jan 5, 2015. 2:02 PM REPLY

hi its good
but i have problem
1- resistor R1 on schematic no value =?
2- fuse bit config on micro atmega16=?

anand6565 says:

Dec 30, 2014. 9:54 AM REPLY

what is this hook switch
What is its model no.

anand6565 says:

Dec 30, 2014. 9:54 AM REPLY

what is this hook switch
What is its model no.

anand6565 says:
what is this hook switch
What is its model no.

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Dec 30, 2014. 9:54 AM REPLY

GauravM2 says:

Nov 22, 2014. 10:51 PM REPLY

How can I replace Bluetooth with wifi or WAN??

electricar says:

Nov 17, 2014. 3:53 AM REPLY

Hello,
first thank you very much for this project!
I wanted to downlaod the code, but I cannot find anything at the bottom of 5th and 6th step. Can you help me please?
Greets

jhunmar100 says:

Nov 11, 2014. 11:58 AM REPLY

What kind of software program that you use to write your code?

durgap says:

Oct 30, 2014. 10:22 PM REPLY

Actually I don't know much more about ATMEGA16. So can I use PIC16F877.I think pic features are same as ATMEGA16.

DukeB1 says:

Oct 1, 2014. 6:01 AM REPLY

wow, this is cool. i did something similar with ir once. im gonna try it with bluetooth. thx for the info

durgap says:

Sep 12, 2014. 6:23 AM REPLY

Hi I like your project..Can I use 8051 micro controller instead of ATMEGA16

abhishek7xavier says:

Sep 30, 2014. 10:24 PM REPLY
But you have to rewrite the code for 8051,also most of the 8051 series does not comes with EEPROM which is a requirement in our project!!

asanker says:

Apr 2, 2014. 10:56 AM REPLY

hai frnd i like your project.... can you plz give me code plzzz......

abhishek7xavier says:

Sep 5, 2014. 2:22 AM REPLY

please see the bottom of 5th & 6th step,code is archived there only!!

arti023 says:

Aug 10, 2014. 3:21 PM REPLY

NIce project well done . what is the code for the .apk file please ?

abhishek7xavier says:

Sep 5, 2014. 2:21 AM REPLY

please see the bottom of 6th step,code is archieved there only!!

nitin4212 says:

Jul 1, 2014. 9:53 PM REPLY

After install home automation Android file in my mobile phone then required password. what is password.

abhishek7xavier says:

Sep 5, 2014. 2:20 AM REPLY

45206734

tpratama says:

Jul 4, 2014. 9:46 AM REPLY

Thanks a lot!
This is great

abhishek7xavier says:
Thanks

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Sep 5, 2014. 2:20 AM REPLY

nitin4212 says:

Jul 1, 2014. 10:01 PM REPLY

how can download pdf file.what information in pdf file .pl describe.can i make a project industry level through this pdf.

KOTSOS5 says:

Feb 19, 2014. 7:11 AM REPLY
Perfect! Too bad you didn't use Arduino. I mean I know this project can be done with Arduino since it uses ATmega chip, but too bad i don't have the
programming skills to do it, thank you anyways your instructable was very educational.

mxain says:

Feb 15, 2014. 8:26 PM REPLY

Which microcontroller is used in this project??

abhishek7xavier says:
ATMEA16 ,u can also use ATMEGA32/64

http://www.instructables.com/id/DIY-Smart-Home-Automation/

Feb 18, 2014. 2:15 AM REPLY

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