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This work is licensed under a Creative Commons Attribution-Noncommercial 2.5 India License.Rickey's World Disclaimer Ajay Bhargav - contact@nospam.com contact@nospam.com Mon, 01 Dec 2008 11:54:45 -0800 Mon, 01 Dec 2008 11:54:45 -0800 http://backend.userland.com/rss e107 (http://e107.org) 60 Search Search 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes query http://www.8051projects.net/search.php [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html
the whole circuit is devided into four sections.
A. Control and Display Section
B. PC Interface Section
C. Appliance Section
D. Power Supply section

Power Supply Section: This section will provide the power to the circuit, in this i have used two ICs one is LM7805 and other LM7812. LM7805 will provide the 5V to the controller and other components. LM7812 is for extenstion purpose, if someone want to use a 12V relay then he/she can use this 12V supply.

Control and Display section: This section contain mainly two components. Microcontroller and LCD. Microcontroller is used for all the controlling purpose, ofcouse its the brain of the project. LCD is used for display the messages which are being sent over internet.
There is provision of sending message from internet terminal from where user login.
so on reciever side.. user can see messages pressing keys. there are three keys provided. one is to open/close message, second is next message and third is previous message.

PC Interface Section: In this section there is one main IC used which is very common MAX232 for RS232 interface between PC and controller. so its basically provides Serial communication.

Appliance Section: This section provides interface with Appliances to control maximum of 8 devices. i have connected LEDs to show each appliance. if LED is on that means appliance is ON. if LED is off, means appliance is off. so if you want you can replace these LEDs with relays for 220V appliance conection.

anymore quaries please reply to the post.
regards,
ajay bhargav]]> Wed, 20 Sep 2006 04:22:31 -0700 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html ]]> Rajendra<patoliyarj@nospam.com> Fri, 29 Sep 2006 04:25:25 -0700 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html Ajay<contact@nospam.com> Fri, 29 Sep 2006 04:28:05 -0700 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html deepika<deepika_srkr@nospam.com> Fri, 22 Dec 2006 05:25:36 -0800 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html Ajay<contact@nospam.com> Thu, 28 Dec 2006 12:37:21 -0800 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html Matt<lil_sti@nospam.com> Thu, 22 Feb 2007 12:51:11 -0800 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html So without LCD it will not work.. better connect just an LCD

thats all! and ofcourse with serial

]]> Ajay<contact@nospam.com> Thu, 22 Feb 2007 13:59:54 -0800 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html Matt<lil_sti@nospam.com> Tue, 27 Feb 2007 10:48:22 -0800 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html Matt wrote ...

I want to remove the LCD from the HA project. I was wondering if you would be willing to look at the altered code to see if it is correct? I can email you the code if you would like.

Hi matt... can you please crate a new topic.. for your doubt?
it will be easy for u and me.. to help! and its better not to make this thread too big as.. the first reply in the thread is important.
So, create a new thread, attach your modified files with the thread

I will wait

]]> Ajay<contact@nospam.com> Tue, 27 Feb 2007 11:23:35 -0800 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html
why the LCD is used.. ? then which file should i burn in MC....?? what r that c programs and what should i do with it..

Plz help me out to find answers for the above questions bcoz i m not a electrical or electronic student.. i just loved this project.. so i need to do that .. so help me..

regards,
Nivas]]> nIVAS<nivas4u1@nospam.com> Thu, 03 Jan 2008 02:31:06 -0800 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html nIVAS wrote ...

Hi Everybody.. Can anyone explain the full operation of the project home automation over internet... i need crystal clear working of circuit..

check the first post.. if anything extra.. ask me..

nIVAS wrote ...

i.e; for instance , what happens when a command is given from transmitter side.. how does MC receives it.. how it is decoded.. what will MC do with program burned inside it while receiving a command????

When command is sent from transmitter side.. it is sent to software first (HAserver.exe) and then the sent string is transferred to controller via serial or RS232 communication, This is how MC receive the command.
The commands are decoded in strfunc.c file and are converted to a number.. the returned numeric value is using switch case select the function to perform in main function. this everything is inside the controller HAserver is just an interface between controller and the user...

nIVAS wrote ...

then how will it produce signal to activate the output switches.. what type of switch must be used at output port of MC along with Power line(220v)...

The signal is simple TTL singnal.. high 5V and low 0V. The o/ps are active low.. i.e. low signal activate the switch and high deactivate it.
To connect 220V power appliances.. you need to make use an interface either a relay or an optocoupler. you can make use of the famous ULN2003 to drive the relays of high voltages.

nIVAS wrote ...

why the LCD is used.. ? then which file should i burn in MC....?? what r that c programs and what should i do with it..

Plz help me out to find answers for the above questions bcoz i m not a electrical or electronic student.. i just loved this project.. so i need to do that .. so help me..

LCD is used to display messages sent from user side.. its just an addon in the project.. like user want to give message to family members. he just have to logon to the server and leave a message.. New message indicator glows and inform that new message arrived..
The C program is the code of Microcontroller.. when you compile these C codes you get hex file which you need to burn on to the controller. you can make use of the hex file provided inside the archive if you do not have a compiler. There is not really any change needed to make in this project so you can directly use the hex file.]]> Ajay<contact@nospam.com> Thu, 03 Jan 2008 02:56:45 -0800 http://www.8051projects.net/forum-t183.html Re: [poll] Home Automation Project [explained] http://www.8051projects.net/forum-t183.html >>but this forum helps me a lot!!!!!

]]> Laurence_Luz<Laurence_Luz1424@nospam.com> Sun, 13 Apr 2008 16:26:15 -0700 http://www.8051projects.net/forum-t183.html